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Navegação Livros - Capítulos por título da publicação "Characterization of Minerals, Metals, and Materials"
Itens para a visualização no momento 1-20 de 36
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MUNHOZ JUNIOR, ANTONIO H.; GALHARDO, GUSTAVO F.; ORTEGA, FERNANDO dos S.; LIMA, NELSON B. de
; MORAES, DENISON A.; MIRANDA, LEILA F. de; VALENZUELA-DIAZ, FRANCISCO R.. Alpha-alumina synthesis using gamma-alumina powders.
In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2019.
p. 441-451,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-05749-7_44
Abstract:
Alpha-alumina is a ceramic material with applications as a biomaterial in
femoral prostheses and teeth. The study of the influence of the precursor powder on
the microstructure and mechanical properties of the alumina obtained is extremely
important for the use of the same as biomaterials. Other applications of alpha-alumina
industrially are in obtaining parts used at high temperatures and in chemically aggressive
environments. Alpha-alumina can be synthesized from different raw materials
resulting in ceramic products with different microstructures and consequently with
diverse mechanical resistance. The synthesis of alpha-alumina pieces obtained from
gamma-alumina powders was studied in order to verify the mechanical properties of
the sintered material. The addition of graphene oxide in the gamma-alumina powder
was also studied. To evaluate the mechanical strength of the obtained alpha-alumina
specimens and to correlate the mechanical resistance with the precursor used in
alpha-alumina synthesis it was used three -point bend strength testing.
Palavras-Chave: aluminium oxides; aluminium compounds; graphene; oxides
. Alpha-alumina synthesis using gamma-alumina powders. In: LI, BOWEN (ed.); LI, JIAN (ed.); IKHMAYIES, SHADIA (ed.); ZHANG, MINGMING (ed.); KALAY, YUNUS E. (ed.); CARPENTER, JOHN S. (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); BAI, CHENGUANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); SPENA, PASQUALE R. (ed.); GOSWAMI, RAMASIS (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 441-451. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_44. Disponível em: http://repositorio.ipen.br/handle/123456789/29857. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
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MONTEIRO, ALEX S.
; BARREIRA, DAILI A.S.
; SILVA, JAQUELINE S.
; OLIVEIRA, RENE R.
; VALENZUELA-DIAZ, FRANCISCO R.; MOURA, ESPERIDIANA A.B.
. An investigation of mechanical and thermal properties of polypropylene reinforced with different clays.
In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2019.
p. 453-463,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-05749-7_45
Abstract:
Nowadays, environmental awareness and an increasing concern with the
greenhouse effect have increased the interest in composite materials containing at
least one of the components from natural origin. Natural clays seem to be a good
alternative because they are environmentally acceptable, naturally abundant minerals,
and due to their ability to intercalate and exfoliate in the polymer matrix led to an
improvement in mechanical, thermal and barrier properties, compared to the neat
polymer. This work presents an investigation of the effects of incorporation of two
different clays on mechanical and thermal properties of polypropylene (PP) matrix.
PP with 1.5–3.0 wt% of the Cloisite® (commercial clay), and light green clay (noncommercial
Brazilian clay), was prepared by melt extrusion process. The neat PP
and its nanocomposites were characterized by mechanical tests, SEM, DSC, TGA
and XRD analyses. In addition, clay characterization by XRD has also been carried
out.
Palavras-Chave: polypropylene; clays; tensile properties; thermal gravimetric analysis
. An investigation of mechanical and thermal properties of polypropylene reinforced with different clays. In: LI, BOWEN (ed.); LI, JIAN (ed.); IKHMAYIES, SHADIA (ed.); ZHANG, MINGMING (ed.); KALAY, YUNUS E. (ed.); CARPENTER, JOHN S. (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); BAI, CHENGUANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); SPENA, PASQUALE R. (ed.); GOSWAMI, RAMASIS (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 453-463. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_45. Disponível em: http://repositorio.ipen.br/handle/123456789/29845. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
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KOMATSU, LUIZ G.H.
; OLIANI, WASHINGTON L.
; OLIVEIRA, CAMILA B.
; RANGARI, VIJAYA K.; PARRA, DUCLERC F.
. Application of nanoparticles of ZnO and ZnO-doped-Ag in polymeric blend of HMSPP/SEBS for biocide activity.
In: LI, JIAN (Ed.); ZHANG, MINGMING (Ed.); LI, BOWEN (Ed.); MONTEIRO, SERGIO N. (Ed.); IKHMAYIES, SHADIA (Ed.); KALAY, YUNUS E. (Ed.); HWANG, JIANN-YANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); CARPENTER, JOHN S. (Ed.); BROWN, ANDREW D. (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2020.
p. 429-435,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-36628-5_41
Abstract:
In this study, the nanoparticles of Zinc oxide (ZnO) and Zinc oxide doped
with Silver (ZnO/Ag) were synthesized in laboratory. The incorporation of these
nanoparticles in the blend of high melt strength polypropylene (HMSPP) and styrene–
ethylene/butadiene–styrene (SEBS) was carried by melt processing. The obtained
materials were evaluated by X-ray diffraction (XRD), Raman Spectroscopy, Differential
Scanning Calorimetry (DSC), biocidal tests against the bacteria Escherichia
coli and Staphylococcus aureus. The nanoparticles showed size between 150 and
200 nm and spherical form. HMSPP/SEBS/AgNPs/ZnO films incorporated with the
nanoparticles have demonstrated biocidal effect against the bacteria E. coli and S.
aureus when irradiated at 12.5 kGy.
Palavras-Chave: zinc oxides; antimicrobial agents; nanoparticles; antibiotics
. Application of nanoparticles of ZnO and ZnO-doped-Ag in polymeric blend of HMSPP/SEBS for biocide activity. In: LI, JIAN (ed.); ZHANG, MINGMING (ed.); LI, BOWEN (ed.); MONTEIRO, SERGIO N. (ed.); IKHMAYIES, SHADIA (ed.); KALAY, YUNUS E. (ed.); HWANG, JIANN-YANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); CARPENTER, JOHN S. (ed.); BROWN, ANDREW D. (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2020. p. 429-435. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-36628-5_41. Disponível em: http://repositorio.ipen.br/handle/123456789/31852. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
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COSTA, ROBSON S.
; MOURA, ESPERIDIANA A.B.
. A bibliometric analysis of the strategy and performance measurement of the polymer matrix nanomaterials development scenario globally, and the participation of Brazil.
In: LI, JIAN (Ed.); ZHANG, MINGMING (Ed.); LI, BOWEN (Ed.); MONTEIRO, SERGIO N. (Ed.); IKHMAYIES, SHADIA (Ed.); KALAY, YUNUS E. (Ed.); HWANG, JIANN-YANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); CARPENTER, JOHN S. (Ed.); BROWN, ANDREW D. (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2020.
p. 329-342,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-36628-5_31
Abstract:
Extensive studies have been conducted worldwide on the strategy for the
development of nanomaterials. One of the known strategies for this has aroused
interest in the market is the incorporation of the nanoparticles, extracted from the
residues in thematrices of the polymers for the production of environmentally correct
nanocomposites. This work presents a survey of the scientific knowledge of nanomaterials
of the polymer matrix and a panoramic view of the evolution of these nanomaterials
are subject, in order to meet the criteria of sustainable development due to the
environmental concerns. This study also intends to use bibliometric tools to database
acquisition and analysis of bibliographic reviews for an evaluation of the scenarios
in the world on the development of polymeric nanomaterials based on three different
classes of polymeric nanocomposites: polymer/clay; polymer/graphene, and
polymer/nanocellulose nanocomposites.
Palavras-Chave: statistical data; nanomaterials; nanocomposites; scientific personnel; knowledge management; polymers
. A bibliometric analysis of the strategy and performance measurement of the polymer matrix nanomaterials development scenario globally, and the participation of Brazil. In: LI, JIAN (ed.); ZHANG, MINGMING (ed.); LI, BOWEN (ed.); MONTEIRO, SERGIO N. (ed.); IKHMAYIES, SHADIA (ed.); KALAY, YUNUS E. (ed.); HWANG, JIANN-YANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); CARPENTER, JOHN S. (ed.); BROWN, ANDREW D. (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2020. p. 329-342. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-36628-5_31. Disponível em: http://repositorio.ipen.br/handle/123456789/31850. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
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MUNHOZ JUNIOR, ANTONIO H.; PACHECO, CAROLINE V.; MELO, HENRIQUE T.T.S.; PERES, RENATO M.; SILVA, LEONARDO G. de A. e
; MIRANDA, LEILA F. de; ROMERO FILHO, MARCOS. Characterization of a composite of high-impact polystyrene, pseudoboehmite and graphene oxide.
In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2019.
p. 511-522,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-05749-7_51
Abstract:
The application of a composite material of pseudoboehmite, polystyrene
and graphene oxide was studied. The present work is the synthesis and characterization
of high-impact polystyrene (HIPS) nanocomposite, with pseudoboehmite
(PSB) and graphene oxide. Pseudoboehmite particles with nanometric dimensions
were obtained by sol-gel process. The composites were characterized by mechanical
tests (tensile strength, flexural strength, Izod Impact, Shore D Hardness), thermal
(Flow index, temperature of thermal deflection under load-HDT, Vicat softening
temperature, differential tests thermal analyses and thermogravimetric analysis) and
morphologically by Scanning Electron Microscopy (SEM). The results obtained
were compared with HIPS matrix properties, without PSB and graphene oxide addition.
From the thermal analyzes, composite samples showed higher decomposition
temperatures compared to pure high-impact polystyrene especially in the thermogravimetric
analysis results, showing a considerable increase in the temperature at
which material decomposition begins (322 °C for pure high-impact polystyrene and
380 °C for the composite).
Palavras-Chave: composite materials; polystyrene; graphene; oxides; nanocomposites; aluminium compounds
. Characterization of a composite of high-impact polystyrene, pseudoboehmite and graphene oxide. In: LI, BOWEN (ed.); LI, JIAN (ed.); IKHMAYIES, SHADIA (ed.); ZHANG, MINGMING (ed.); KALAY, YUNUS E. (ed.); CARPENTER, JOHN S. (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); BAI, CHENGUANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); SPENA, PASQUALE R. (ed.); GOSWAMI, RAMASIS (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 511-522. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_51. Disponível em: http://repositorio.ipen.br/handle/123456789/29858. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
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MIRANDA, LEILA F. de; MUNHOZ JUNIOR, ANTONIO H.; MASSON, TEREZINHA J.; SILVA, LEONARDO G. de A. e
; FRIEHE, KARL. Characterization of antistatic packaging based on PET/rGO.
In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2019.
p. 523-534,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-05749-7_52
Abstract:
Package for electronic components is one that protects an electronic or
electrical device against electrostatic discharge. Traditionally, antistatic packages
are produced with polystyrene (PS) or polypropylene (PP) filled with carbon black.
Recently, studies have been carried out successfully for the application of polyethylene
terephthalate (PET) filled with carbon black. This work aimed to obtain and
characterize nanocomposites based on PET filled with reduced graphene oxide (rGO)
and compare its physicochemical properties with PET filled with carbon black and
PP filled with carbon black used in anti-static packaging. PET compounds containing
0.1; 0.3; 0.5 and 0.7wt% reduced graphene oxide were obtained by the modified
Hummers process from the graphite and reduced with hydrazine. The thermomechanical,
electrical and morphological properties of the obtained compounds were
determined. The results showed that the addition of reduced graphene oxide to PET
causes an increase in the melt flow index, also increase the tensile strength and electrical
conductivity. The addition of reduced graphene oxide promotes the decrease
in the hardness and thermal resistance of the obtained nanocomposites. Nanocomposites
based on PET containing 0.5wt% and 0.7wt% reduced graphene oxide can
be used in the handling, transport and storage of electronic components since their
mechanical, thermal and resistivity properties are satisfactory for this purpose.
Palavras-Chave: nanocomposites; polyethylene terephthalate; graphene; oxides; packaging
. Characterization of antistatic packaging based on PET/rGO. In: LI, BOWEN (ed.); LI, JIAN (ed.); IKHMAYIES, SHADIA (ed.); ZHANG, MINGMING (ed.); KALAY, YUNUS E. (ed.); CARPENTER, JOHN S. (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); BAI, CHENGUANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); SPENA, PASQUALE R. (ed.); GOSWAMI, RAMASIS (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 523-534. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_52. Disponível em: http://repositorio.ipen.br/handle/123456789/29846. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
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MIRANDA, LEILA F. de; BARBOSA, ISABELLA T.F.; MASSON, TEREZINHA J.; MUNHOZ JUNIOR, ANTONIO H.; SILVA, LEONARDO G. de A. e
; GONÇALVES, ALEKSANDRA A.A.. Characterization of hydrogels for release of cosmetic assets containing nanoemulsions of mandellic acid in different concentrations of pseudoboehmite.
In: LI, JIAN (Ed.); ZHANG, MINGMING (Ed.); LI, BOWEN (Ed.); MONTEIRO, SERGIO N. (Ed.); IKHMAYIES, SHADIA (Ed.); KALAY, YUNUS E. (Ed.); HWANG, JIANN-YANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); CARPENTER, JOHN S. (Ed.); BROWN, ANDREW D. (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2020.
p. 477-489,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-36628-5_47
Abstract:
Hydrogel is a gel formed by a three-dimensional network of hydrophilic
polymers that are used as advanced asset release systems with good biocompatibility.
The use of ionizing radiation to obtain hydrogels promotes cross-linking with
the concomitant sterilization of the hydrogels. Aiming at the release of the mandelic
acid (an active cosmetic), hydrogels were prepared using different concentration of
poly(N-vinyl-2-pyrrolidone) (PVP), poly(ethylene glycol) (PEG) and agar containing
nanoparticles of the pseudoboehmite, mandelic acid and Palmarosa and Rosa
Mosqueta oils nanoemulsions, submitted to irradiation dose of 25 kGy. Hydrogels
containing 7.5 wt% PVP showed better absorption, slip, odor results, and those with
10 wt% PVP were found to be inadequate. Nanoemulsions were characterized by
acidity, density and optical microscopy; hydrogels samples were put under isothermal
dehydration with air entrainment and dehydration was examined as a function of
time. The results showed that the composition of hydrogels is stable, and the increase
of the concentration of pseudoboehmite in hydrogels sample containing Palmarosa
oil suffers less dehydration and those containing the two oils showed an increase
in dehydration. The hydrogels obtained with 7.5 wt% of PVP and 3 wt% of pseudoboehmite,
Rosa Mosqueta vegetable oil and mandelic acid are most suitable to be
used in cosmetic products.
Palavras-Chave: hydrogels; mandelic acid; pvp; consumer products
. Characterization of hydrogels for release of cosmetic assets containing nanoemulsions of mandellic acid in different concentrations of pseudoboehmite. In: LI, JIAN (ed.); ZHANG, MINGMING (ed.); LI, BOWEN (ed.); MONTEIRO, SERGIO N. (ed.); IKHMAYIES, SHADIA (ed.); KALAY, YUNUS E. (ed.); HWANG, JIANN-YANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); CARPENTER, JOHN S. (ed.); BROWN, ANDREW D. (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2020. p. 477-489. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-36628-5_47. Disponível em: http://repositorio.ipen.br/handle/123456789/31853. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
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MONTEIRO, ALEX S.
; BARREIRA, DAILI A.S.
; BARTOLOMEI, SUELLEN S.
; OLIVEIRA, RENE R.
; MOURA, ESPERIDIANA A.B. de
. Comparative study of the use of rice husk ashes and graphite as fillers in polypropylene matrix composites.
In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2019.
p. 561-570,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-05749-7_56
Abstract:
In recent years, carbonaceous materials have been widely studied for polymer
composite applications due to its capability to improve the engineering properties
of the polymeric matrix. Among various carbonaceous fillers, carbon nanotube,
graphene, and graphite promise to be a suitable reinforcement of polymers. Rice
husk ash (RHA), a large residue rich in carbon and silica produced by the burning
of rice husk offers also an immense potential as a carbonaceous filler for polymer
composites on account of its lowcost, lowdensity, high strength and elastic modulus,
no health risks, and renewability. This work aims at studying the effects of RHA and
graphite as fillers in polypropylene (PP) matrix composites. The composites PP/RHA
and PP/graphite were produced by melting extrusion process. The materials obtained
were subjected to mechanical tests, XRD, TG, and FEG-SEM analyses. Comparison
studies between neat PP properties and its composites were carried out.
Palavras-Chave: matrix materials; polypropylene; mechanical properties; thermodynamic properties; carbonaceous materials
. Comparative study of the use of rice husk ashes and graphite as fillers in polypropylene matrix composites. In: LI, BOWEN (ed.); LI, JIAN (ed.); IKHMAYIES, SHADIA (ed.); ZHANG, MINGMING (ed.); KALAY, YUNUS E. (ed.); CARPENTER, JOHN S. (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); BAI, CHENGUANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); SPENA, PASQUALE R. (ed.); GOSWAMI, RAMASIS (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 561-570. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_56. Disponível em: http://repositorio.ipen.br/handle/123456789/29847. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
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SOARES, CARLOS
; SANTANA, JULYANA
; GUVEN, OLGUN; MOURA, ESPERIDIANA A.B.
. A comparison between graphene oxide and reduced graphene oxide as reinforcement agents in polypropylene nanocomposite using irradiated polypropylene as compatibilizer.
In: LI, JIAN (Ed.); ZHANG, MINGMING (Ed.); LI, BOWEN (Ed.); MONTEIRO, SERGIO N. (Ed.); IKHMAYIES, SHADIA (Ed.); KALAY, YUNUS E. (Ed.); HWANG, JIANN-YANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); CARPENTER, JOHN S. (Ed.); BROWN, ANDREW D. (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2020.
p. 385-394,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-36628-5_36
Abstract:
Graphene is thematerial with the bestmechanical resistance ever encountered.
Various types of studies have been carried out on possible applications. The use
as a reinforcement in nanocomposites has shown to be a promising field, but some
studies indicate that the graphene oxide (GO) and reduced graphene oxide (RGO)
have better results as reinforcement, due to the functional groups,which allowa better
adhesion with the matrix. This study analyzes the production of polypropylene (PP)
nanocomposite comparing the use of graphene oxide (GO) and reduced graphene
oxide (RGO) as fillers and irradiated polypropylene as a coupling agent.Atwin-screw
extruder and injection molding machine were used to produce the nanocomposite
PP reinforced with 0.2 wt% of GO and RGO by melt blending. The GO and RGO
were characterized byXRDanalysis.The nanocomposite sampleswere characterized
by XRD, SEM, TG, DSC and mechanical test.
Palavras-Chave: graphene; oxides; polypropylene; nanocomposites; gamma radiation; stresses; tensile properties
. A comparison between graphene oxide and reduced graphene oxide as reinforcement agents in polypropylene nanocomposite using irradiated polypropylene as compatibilizer. In: LI, JIAN (ed.); ZHANG, MINGMING (ed.); LI, BOWEN (ed.); MONTEIRO, SERGIO N. (ed.); IKHMAYIES, SHADIA (ed.); KALAY, YUNUS E. (ed.); HWANG, JIANN-YANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); CARPENTER, JOHN S. (ed.); BROWN, ANDREW D. (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2020. p. 385-394. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-36628-5_36. Disponível em: http://repositorio.ipen.br/handle/123456789/31851. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
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OLIANI, WASHINGTON L.
; PARRA, DUCLERC F.
; LIMA, LUIS F.C.P.
; OTAGURO, HARUMI; FERRETO, HELIO F.R.
; LUGAO, ADEMAR B.
. Contribution to the β relaxation study of the HDPE, LDPE and LLDPE.
In: IKHMAYIES, SHADIA (Ed.); LI, BOWEN (Ed.); CARPENTER, JOHN S. (Ed.); LI, JIAN (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); FIRRAO, DONATO (Ed.); ZHANG, MINGMING (Ed.); PENG, ZHIWEI (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); BAI, CHENGUANG (Ed.); KALAY, YUNUS E. (Ed.); GOSWAMI, RAMASIS (Ed.); KIM, JEONGGUK (Ed.).
Characterization of Minerals, Metals, and Materials.
Gewerbestrasse, Switzerland: Springer International Publishing AG.,
2017.
p. 617-626,
(The Minerals, Metals & Materials Series).
Abstract:
The activation of three polyethylenes, the low density, the high density and the linear low density polyethylene, was determined by means of dynamic mechanical analysis (DMA). Storage modulus and tan δ spectra were obtained as a function of the temperature from −60 to 50 °C with a heating rate of 2° min−1 at frequencies of 1, 2 and 5 Hz and measurement strain amplitude of 10−5. In the tan δ spectra, a small peak in the β region of the three polyethylenes was found and substantiated by subtracting the growing exponential background. This procedure was based on a model that associates the dislocation motion on metals under cyclic stress to vibrating strings and considering the same for the polymeric chains. For the determination of the activation energy we have utilized the frequency versus the reciprocal of the absolute temperature peak of the tan δ. The values obtained for the three polyethylenes, the low density, the high density and the linear low density were, 362 ± 12, 266 ± 9 and 197 ± 6 kJ mol−1, respectively, which were compared with those presented in the literature.
Palavras-Chave: polyethylenes; relaxation; activation energy; density
. Contribution to the β relaxation study of the HDPE, LDPE and LLDPE. In: IKHMAYIES, SHADIA (ed.); LI, BOWEN (ed.); CARPENTER, JOHN S. (ed.); LI, JIAN (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); FIRRAO, DONATO (ed.); ZHANG, MINGMING (ed.); PENG, ZHIWEI (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); BAI, CHENGUANG (ed.); KALAY, YUNUS E. (ed.); GOSWAMI, RAMASIS (ed.); KIM, JEONGGUK (ed.). Characterization of Minerals, Metals, and Materials. Gewerbestrasse, Switzerland: Springer International Publishing AG., 2017. p. 617-626. (The Minerals, Metals & Materials Series). Disponível em: http://repositorio.ipen.br/handle/123456789/27926. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
-
REIS, PEDRO R.S.
; SANTANA, JULYANA G.
; OLIVEIRA, RENE R.
; RANGARI, VIJAYA K.; LOURENÇO, FELIPE R.; MOURA, ESPERIDIANA A.B.
. Development of biocomposite materials from biodegradable polymer and bio-hydroxyapatite derived from eggshells for biomedical applications.
In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2019.
p. 571-581,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-05749-7_57
Abstract:
Nowadays, significant advances have been made in the development of
biodegradable polymeric materials for biomedical applications. This study aims to
prepare and characterize composite materials based on PLA/PBAT, a biodegradable
polymer blend, reinforced with bio-hydroxyapatite (bio-HAp). First, bio-HAp was
obtained from eggshell residues by the wet precipitation method. PLA/PBAT blend
with 1.5 wt% of bio-HAp was prepared by melt extrusion and injection molding
process. Part of composite samples was irradiated with gamma radiation dose of
25 kGy, at room temperature and presence of air. The effects of the bio-HAp addition
into the biodegradable blend were investigated by mechanical tests, XRD, DSC, FESEM,
and cytotoxicity “in vitro” analysis and the correlation between the properties
was discussed. In addition, the microbiological tests were carried out at irradiated and
non-irradiated composite samples in order to evaluate the efficiency of the radiation
dose of 25 kGy at composite materials sterilization.
Palavras-Chave: apatites; polyurethanes; polymers; biodegradation; antimitotic drugs; microorganisms; materials testing
. Development of biocomposite materials from biodegradable polymer and bio-hydroxyapatite derived from eggshells for biomedical applications. In: LI, BOWEN (ed.); LI, JIAN (ed.); IKHMAYIES, SHADIA (ed.); ZHANG, MINGMING (ed.); KALAY, YUNUS E. (ed.); CARPENTER, JOHN S. (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); BAI, CHENGUANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); SPENA, PASQUALE R. (ed.); GOSWAMI, RAMASIS (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 571-581. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_57. Disponível em: http://repositorio.ipen.br/handle/123456789/29848. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
-
ROMANO, REBECA da S.G.
; OLIANI, WASHINGTON L.
; KUMAR, VIJAYA R.; PARRA, DUCLERC F.
; LUGAO, ADEMAR B.
. Differences in properties of pro-degradant added PP and gamma-irradiated PP under environmental aging.
In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2019.
p. 591-603,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-05749-7_59
Abstract:
Polypropylene (PP) is used for different sectors of the industry and in
consequence produces a large amount of waste discarded at landfills causing serious
environmental impacts. Controlled degradation of PP can be achieved by exposing
the polymers to defined parameters, such as absorbed radiation dose, weather,
oxygen, etc. The aim of this study was to compare two methods of accelerated
degradation: gamma irradiation of PP 20 kGy and the incorporation of the commercial
pro-degradant d2w® (1 wt%) in PP. Dumbbell samples were manufactured
by the injection process and exposed to the environment aging for 90 days. Structural
changes in PP macromolecules are created upon exposure to ionizing radiation
such as main chain scission, crosslinking and peroxidation (in presence of air). Differential
scanning calorimetry (DSC), thermogravimetric analysis (TG), scanning
electron microscopy (SEM), energy-dispersive spectroscopy (EDX), X-ray fluorescence,
Fourier-transformed infrared spectroscopy (FTIR) and mechanical tests characterized
the samples. The samples previously irradiated, PP 20 kGy, after natural
aging showed higher oxidation and presence of surface cracks than the PP d2w®.
They also showed presence of carbonyl groups and decrease of melting temperature
corroborating with oxo-degradation.
Palavras-Chave: polypropylene; ionizing radiations; gamma radiation; residues; wastes; environment; aging; calorimetry
. Differences in properties of pro-degradant added PP and gamma-irradiated PP under environmental aging. In: LI, BOWEN (ed.); LI, JIAN (ed.); IKHMAYIES, SHADIA (ed.); ZHANG, MINGMING (ed.); KALAY, YUNUS E. (ed.); CARPENTER, JOHN S. (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); BAI, CHENGUANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); SPENA, PASQUALE R. (ed.); GOSWAMI, RAMASIS (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 591-603. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_59. Disponível em: http://repositorio.ipen.br/handle/123456789/29849. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
-
SALES, J.N.
; POVEDA, P.N.S.
; ORTIZ, A.
; VALENZUELA-DIAZ, F.R.; SILVA, L.A.
. Effect study of the incorporation of the Green Lake clay in the polypropylene homopolymer properties.
In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2019.
p. 629-636,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-05749-7_62
Abstract:
The advancement of technology has demanded the development of materials
with increasingly lighter and more resistant properties. The development of
nanocomposites first started in the mid-80s and contributed for obtaining materials
with excellent properties. In this work, Green Lake clay was organophilized
and incorporated into a commercial homopolymer polypropylene. The efficiency
of organophilization was confirmed by water swelling analysis and, later, by Xray
diffraction (XRD) analysis. Composites at 0.5, 1.0 and 2% by weight of
clay/polypropylene were prepared by double screw extrusion. The properties of the
composite were evaluated by means of Charpy impact resistance, tensile strength at
rupture, thermogravimetric analysis (TGA). Crystallinity index was determined by
differential scanning calorimetry (DSC). The organophilization processwas efficient,
the thermogravimetric analysis showed that there was no decrease in the thermal stability
of the composites when compared to pure polypropylene, and the results of
the Charpy impact resistance were equivalent when compared to the commercial
nucleant composites.
Palavras-Chave: clays; crystal structure; charpy test; polypropylene; polymers
. Effect study of the incorporation of the Green Lake clay in the polypropylene homopolymer properties. In: LI, BOWEN (ed.); LI, JIAN (ed.); IKHMAYIES, SHADIA (ed.); ZHANG, MINGMING (ed.); KALAY, YUNUS E. (ed.); CARPENTER, JOHN S. (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); BAI, CHENGUANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); SPENA, PASQUALE R. (ed.); GOSWAMI, RAMASIS (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 629-636. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_62. Disponível em: http://repositorio.ipen.br/handle/123456789/29850. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
-
MESQUITA, ANDERSON dos S.
; CAVALCANTE, IAN T.
; SILVA, LEONARDO G. de A. e
. Electron beam effect on the thermal and mechanical properties analysis of DGEBA/EPDM compound.
In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2019.
p. 637-646,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-05749-7_63
Abstract:
The aim of this work is to obtain, characterize and irradiate the
DGEBA/EPDM compound and compare their thermal and mechanical properties
with a non-irradiated DGEBA/EPDM compound. The DGEBA/EPDM compound
may be used to cover other materials such as polymers and protect them against high
thermal conditions and mechanical effort. The compounds have 0.0, 25.0 and 50.0
wt% of DGEBA. In addition, the compounds were irradiated at 30 and 60 kGy at
a dose rate 22.41 kGy/s. The thermal properties (DMA and TGA) and mechanical
analysis (tensile strength and elongation at break) were performed. In conclusion,
the irradiated DGEBA/EPDM compounds may be used for several applications due
to the improvement in their mechanical and thermal properties. Their properties are
satisfactory for application that requires stronger material.
Palavras-Chave: epoxides; ethylene propylene diene polymers; thermodynamic properties; electron beams
. Electron beam effect on the thermal and mechanical properties analysis of DGEBA/EPDM compound. In: LI, BOWEN (ed.); LI, JIAN (ed.); IKHMAYIES, SHADIA (ed.); ZHANG, MINGMING (ed.); KALAY, YUNUS E. (ed.); CARPENTER, JOHN S. (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); BAI, CHENGUANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); SPENA, PASQUALE R. (ed.); GOSWAMI, RAMASIS (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 637-646. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_63. Disponível em: http://repositorio.ipen.br/handle/123456789/29851. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
-
TATEI, TATIANE Y.
; FONTES, ERIC H.
; MOREIRA, RENAN P.
; DIAS, FRANCISCO V.; OLIVEIRA, RENE R.
; RANGARI, VIJAYA; MOURA, ESPERIDIANA A.B.
. Improvement properties of polypropylene by graphene oxide incorporation.
In: LI, JIAN (Ed.); ZHANG, MINGMING (Ed.); LI, BOWEN (Ed.); MONTEIRO, SERGIO N. (Ed.); IKHMAYIES, SHADIA (Ed.); KALAY, YUNUS E. (Ed.); HWANG, JIANN-YANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); CARPENTER, JOHN S. (Ed.); BROWN, ANDREW D. (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2020.
p. 581-589,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-36628-5_57
Abstract:
Due to the remarkable properties of graphene oxide (GO) and its possibility
of functionalization,GOhas been used in many applications such as nanocomposites.
GO nanosheets have been shown to improve the properties of the polypropylene
(PP) matrix, for instance, its strength, gas barrier, thermal, and electrical conductivity.
As PP has relatively low cost and varied applications, this work aims to study the
changes in its thermal, morphological, and mechanical properties, due to the incorporation
of GO in the PP matrix. GO was synthesized from graphite by a modified
Hummers method. The nanocomposites PP/GO with 0.1, 0.2, and 0.3 wt% of GO in
the PP matrix were obtained using a twin-screw extruder and an injection molding
machine via a melt blending process. The nanocomposites PP/GO were characterized
by FE-SEM and Izod impact test. In addition, the GO nanosheets were also
characterized by Raman spectroscopy, ATR-FTIR, FE-SEM, and XRD, therewith
correlation between properties was discussed.
Palavras-Chave: graphene; oxides; polypropylene; nanocomposites
. Improvement properties of polypropylene by graphene oxide incorporation. In: LI, JIAN (ed.); ZHANG, MINGMING (ed.); LI, BOWEN (ed.); MONTEIRO, SERGIO N. (ed.); IKHMAYIES, SHADIA (ed.); KALAY, YUNUS E. (ed.); HWANG, JIANN-YANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); CARPENTER, JOHN S. (ed.); BROWN, ANDREW D. (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2020. p. 581-589. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-36628-5_57. Disponível em: http://repositorio.ipen.br/handle/123456789/31854. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
-
MARCHINI, LEONARDO G.
; PARRA, DUCLERC F.
; RANGARI, VIJAYA K.. Incorporation of silver nanoparticles in zinc oxide matrix in Polyester Thermoplastic Elastomer (TPE-E) aiming antibacterial activity.
In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2019.
p. 79-88,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-05749-7_9
Abstract:
The purpose of present study is to evaluate the antimicrobial potential of
Thermoplastic Polyester Elastomer (TPE-E) incorporated with zinc oxide added with
colloidal dispersion of metallic silver adsorbed on pyrogenic silica (AgNPs_ZnO).
A combination of single screw extruder and hot press technique was used to fabricate
these polymer nanocomposite films. These polymer nanocomposite films were prepared
by mechanical mixing of 1% (w/w) of oil, anti-oxidant 0.05% (w/w), TPE-E
granules 0.5% (w/w) and followed by single screw extruder to produce the pellets.
As-prepared pellets were further melted for films in hot press technique. Antimicrobial
activity was evaluated according to Japan Industrial Standard—JIS Z 2801
in TPE-E compounds against Staphylococcus aureus (S. aureus) and Escherichia
coli (E. coli). TPE-E samples containing additives 0.05 and 0.5% AgNPs_ZnO presented
75 and93%bactericidal reduction for Gram-negative bacteria Escherichia coli
(E. coli) and 76 and 92% bactericidal activity reduction for Gram-positive bacteria
Staphylococcus aureus (S. aureus), respectively.
Palavras-Chave: silver; nanoparticles; antimicrobial agents; thermoplastics; polyesters; elastomers; zinc oxides
. Incorporation of silver nanoparticles in zinc oxide matrix in Polyester Thermoplastic Elastomer (TPE-E) aiming antibacterial activity. In: LI, BOWEN (ed.); LI, JIAN (ed.); IKHMAYIES, SHADIA (ed.); ZHANG, MINGMING (ed.); KALAY, YUNUS E. (ed.); CARPENTER, JOHN S. (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); BAI, CHENGUANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); SPENA, PASQUALE R. (ed.); GOSWAMI, RAMASIS (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 79-88. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_9. Disponível em: http://repositorio.ipen.br/handle/123456789/29840. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
-
SANTOS, BIANCA S.
; INACIO, ANDRE L.N.
; BARTOLOMEI, SUELLEN S.
; SILVA, TAISE B.S.
; CARMO, KARINA L.S.
; OLIVEIRA, RENE R.
; MOURA, ESPERIDIANA A.B.
. Influence of the reduced graphene oxide incorporation on properties of acrylonitrile butadiene styrene (ABS).
In: LI, JIAN (Ed.); ZHANG, MINGMING (Ed.); LI, BOWEN (Ed.); MONTEIRO, SERGIO N. (Ed.); IKHMAYIES, SHADIA (Ed.); KALAY, YUNUS E. (Ed.); HWANG, JIANN-YANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); CARPENTER, JOHN S. (Ed.); BROWN, ANDREW D. (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2020.
p. 599-607,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-36628-5_59
Abstract:
The purpose of this study was to evaluate the influence of incorporation of
the reduced graphene oxide on properties of acrylonitrile butadiene styrene (ABS).
The incorporation of 0.5 and 1.5 wt% of RGO into ABS matrix was carried out
by melting extrusion process using a twin-screw extruder and injection molding
machine. The properties of ABS/RGO nanocomposite samples were investigated
by tensile and impact Izod tests, FE-SEM, and XRD analysis. The results showed
that the incorporation of small amount of RGO into ABS matrix led to obtaining of
polymeric nanocomposite with superior mechanical properties when compared with
original properties of ABS matrix.
Palavras-Chave: graphene; oxides; acrylonitrile; butadiene; styrene; mechanical tests
. Influence of the reduced graphene oxide incorporation on properties of acrylonitrile butadiene styrene (ABS). In: LI, JIAN (ed.); ZHANG, MINGMING (ed.); LI, BOWEN (ed.); MONTEIRO, SERGIO N. (ed.); IKHMAYIES, SHADIA (ed.); KALAY, YUNUS E. (ed.); HWANG, JIANN-YANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); CARPENTER, JOHN S. (ed.); BROWN, ANDREW D. (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2020. p. 599-607. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-36628-5_59. Disponível em: http://repositorio.ipen.br/handle/123456789/31855. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
-
BARTOLOMEI, S.S.; MOURA, E.A.B.
; WIEBECK, H.. Inhibition of flame propagation in nanocomposites with expanded polystyrene recycled clay, gypsum, and titanium dioxide.
In: LI, JIAN (Ed.); ZHANG, MINGMING (Ed.); LI, BOWEN (Ed.); MONTEIRO, SERGIO N. (Ed.); IKHMAYIES, SHADIA (Ed.); KALAY, YUNUS E. (Ed.); HWANG, JIANN-YANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); CARPENTER, JOHN S. (Ed.); BROWN, ANDREW D. (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2020.
p. 609-618,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-36628-5_60
Abstract:
The large amount of plastic waste found in the environment, landfills, and
dumps boost research into the recycling of polymer materials, which could reduce
the amount of polymer discarded. In Brazil, the sector that most consumes polymers
is the civil construction that could consume recycled polymerswithout concerns with
the properties due to applications of low mechanical exigency. However, for applications
in this sector, it is necessary that the materials have some resistance to the
propagation of flames. This work discusses the flame retardance in nanocomposites
with recycled polystyrene matrix and particles of nanoargila, titanium dioxide, and
gypsum. The results of the X-ray diffraction (XRD), differential scanning calorimeter
(DSC), field emission scanning electronmicroscopy (FE-SEM), and flammability
test. The results showed that glycerol, added during recycling, can plasticize recycled
expanded polystyrene while maintaining the flame resistance properties of the
material with flame retardant. It can also be concluded that some particles may delay
the propagation of the flame in the composite.
Palavras-Chave: clays; titanium oxides; gypsum; polystyrene; flames
. Inhibition of flame propagation in nanocomposites with expanded polystyrene recycled clay, gypsum, and titanium dioxide. In: LI, JIAN (ed.); ZHANG, MINGMING (ed.); LI, BOWEN (ed.); MONTEIRO, SERGIO N. (ed.); IKHMAYIES, SHADIA (ed.); KALAY, YUNUS E. (ed.); HWANG, JIANN-YANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); CARPENTER, JOHN S. (ed.); BROWN, ANDREW D. (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2020. p. 609-618. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-36628-5_60. Disponível em: http://repositorio.ipen.br/handle/123456789/31856. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
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BARTOLOMEI, MARCIO R.X.
; CARMO, KARINA H.S.
; SANTOS, BIANCA S.
; BARTOLOMEI, SUELLEN S.
; OLIVEIRA, RENE R.
; MOURA, ESPERIDIANA A.B.
. Investigation on mechanical and thermal behaviours of PBAT/PLA blend reinforced with reduced graphene oxide nanosheets.
In: LI, JIAN (Ed.); ZHANG, MINGMING (Ed.); LI, BOWEN (Ed.); MONTEIRO, SERGIO N. (Ed.); IKHMAYIES, SHADIA (Ed.); KALAY, YUNUS E. (Ed.); HWANG, JIANN-YANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); CARPENTER, JOHN S. (Ed.); BROWN, ANDREW D. (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2020.
p. 631-639,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-36628-5_62
Abstract:
The aim of this study was to process and investigate the changes in
the mechanical and morphological properties of the biodegradable nanocomposites
based on polybutylene adipate-co-terephthalate (PBAT)/poly(lactic acid) (PLA)
blend (PBAT/PLA blend) due to the incorporation of reduced graphene oxide (RGO)
nanosheets. The biodegradable polymeric nanocomposites were prepared by melting
extrusion process using a twin-screw extruder machine. The influence of the RGO
nanosheets incorporation on mechanical and thermal properties of PBAT/PLA blend
was investigated by tensile Thermogravimetric (TG), X-Ray diffraction (XRD), differential
scanning calorimetry (DSC), and tensile test analysis. Results showed that
incorporation of the small amount ofRGO(0.1wt.%) ofRGOnanosheets in the blend
matrix of PBAT/PLA resulted in an important gain of mechanical properties of the
blend. This result indicates that a very small amount of RGO nanosheets addition in
the PBAT/PLA can lead to obtaining materials with superior properties suitable for
several industrial applications.
Palavras-Chave: polymers; graphene; oxides; biodegradation; mechanical tests
. Investigation on mechanical and thermal behaviours of PBAT/PLA blend reinforced with reduced graphene oxide nanosheets. In: LI, JIAN (ed.); ZHANG, MINGMING (ed.); LI, BOWEN (ed.); MONTEIRO, SERGIO N. (ed.); IKHMAYIES, SHADIA (ed.); KALAY, YUNUS E. (ed.); HWANG, JIANN-YANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); CARPENTER, JOHN S. (ed.); BROWN, ANDREW D. (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2020. p. 631-639. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-36628-5_62. Disponível em: http://repositorio.ipen.br/handle/123456789/31857. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
-
FRANCISCO, DANAE L.
; PAIVA, LUCILENE B. de; ALDEIA, WAGNER; LUGAO, ADEMAR B.
; MOURA, ESPERIDIANA A.B.
. Investigation on mechanical behaviors of polyamide 11 reinforced with halloysite nanotubes.
In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.).
Characterization of Minerals, Metals, and Materials.
Cham, CZ, Switzerland: Springer Nature Switzerland AG,
2019.
p. 693-701,
(The Minerals, Metals & Materials Series).
DOI:
10.1007/978-3-030-05749-7_69
Abstract:
The inorganic halloysite nanotubes (HNTs) are a promising type of natural
occurring filler for polymers. Its characteristics such as high aspect ratio (10–50),
small size, and high strength (elastic modulus—140 GPa) suggest that HNTs have
a potential use in high-performance polymer nanocomposites. Compared to other
nanoclays and nanosilica, the relatively low content of hydroxyl groups on their
surfaces makes HNTs relatively hydrophobic, although, sometimes, this is not sufficient
for guaranty a good interfacial adhesion in composite systems. In the present
study, halloysite nanotubes were incorporated in a polyamide 11 (PA11) matrix by
melt extrusion, using a twin-screw extruder and injection molding machine. The
neat PA11 and PA11/HNT nanocomposites were characterized by mechanical tests
(tensile, flexural and impact tests), and the correlation between properties were discussed.
Palavras-Chave: polyamides; nanostructures; nanotubes; nanocomposites; mechanical properties; thermoplastics; inorganic polymers; tensile properties
. Investigation on mechanical behaviors of polyamide 11 reinforced with halloysite nanotubes. In: LI, BOWEN (ed.); LI, JIAN (ed.); IKHMAYIES, SHADIA (ed.); ZHANG, MINGMING (ed.); KALAY, YUNUS E. (ed.); CARPENTER, JOHN S. (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); BAI, CHENGUANG (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); SPENA, PASQUALE R. (ed.); GOSWAMI, RAMASIS (ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 693-701. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_69. Disponível em: http://repositorio.ipen.br/handle/123456789/29852. Acesso em: $DATA.Como referenciar este itemEsta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
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✔ É possível efetuar a busca de um autor ou um termo em todo o RD, por meio do Buscar no Repositório , isto é, o termo solicitado será localizado em qualquer campo do RD. No entanto esse tipo de pesquisa não é recomendada a não ser que se deseje um resultado amplo e generalizado.
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O gerenciamento do Repositório está a cargo da Biblioteca do IPEN. Constam neste RI, até o presente momento 20.950 itens que tanto podem ser artigos de periódicos ou de eventos nacionais e internacionais, dissertações e teses, livros, capítulo de livros e relatórios técnicos. Para participar do RI-IPEN é necessário que pelo menos um dos autores tenha vínculo acadêmico ou funcional com o Instituto. Nesta primeira etapa de funcionamento do RI, a coleta das publicações é realizada periodicamente pela equipe da Biblioteca do IPEN, extraindo os dados das bases internacionais tais como a Web of Science, Scopus, INIS, SciElo além de verificar o Currículo Lattes. O RI-IPEN apresenta também um aspecto inovador no seu funcionamento. Por meio de metadados específicos ele está vinculado ao sistema de gerenciamento das atividades do Plano Diretor anual do IPEN (SIGEPI). Com o objetivo de fornecer dados numéricos para a elaboração dos indicadores da Produção Cientifica Institucional, disponibiliza uma tabela estatística registrando em tempo real a inserção de novos itens. Foi criado um metadado que contém um número único para cada integrante da comunidade científica do IPEN. Esse metadado se transformou em um filtro que ao ser acionado apresenta todos os trabalhos de um determinado autor independente das variáveis na forma de citação do seu nome.
A elaboração do projeto do RI do IPEN foi iniciado em novembro de 2013, colocado em operação interna em julho de 2014 e disponibilizado na Internet em junho de 2015. Utiliza o software livre Dspace, desenvolvido pelo Massachusetts Institute of Technology (MIT). Para descrição dos metadados adota o padrão Dublin Core. É compatível com o Protocolo de Arquivos Abertos (OAI) permitindo interoperabilidade com repositórios de âmbito nacional e internacional.
1. Portaria IPEN-CNEN/SP nº 387, que estabeleceu os princípios que nortearam a criação do RDI, clique aqui.
2. A experiência do Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN/SP) na criação de um Repositório Digital Institucional – RDI, clique aqui.
O Repositório Digital do IPEN é um equipamento institucional de acesso aberto, criado com o objetivo de reunir, preservar, disponibilizar e conferir maior visibilidade à Produção Científica publicada pelo Instituto, desde sua criação em 1956.
Operando, inicialmente como uma base de dados referencial o Repositório foi disponibilizado na atual plataforma, em junho de 2015. No Repositório está disponível o acesso ao conteúdo digital de artigos de periódicos, eventos, nacionais e internacionais, livros, capítulos, dissertações, teses e relatórios técnicos.
A elaboração do projeto do RI do IPEN foi iniciado em novembro de 2013, colocado em operação interna em julho de 2014 e disponibilizado na Internet em junho de 2015. Utiliza o software livre Dspace, desenvolvido pelo Massachusetts Institute of Technology (MIT). Para descrição dos metadados adota o padrão Dublin Core. É compatível com o Protocolo de Arquivos Abertos (OAI) permitindo interoperabilidade com repositórios de âmbito nacional e internacional.
O gerenciamento do Repositório está a cargo da Biblioteca do IPEN. Constam neste RI, até o presente momento 20.950 itens que tanto podem ser artigos de periódicos ou de eventos nacionais e internacionais, dissertações e teses, livros, capítulo de livros e relatórios técnicos. Para participar do RI-IPEN é necessário que pelo menos um dos autores tenha vínculo acadêmico ou funcional com o Instituto. Nesta primeira etapa de funcionamento do RI, a coleta das publicações é realizada periodicamente pela equipe da Biblioteca do IPEN, extraindo os dados das bases internacionais tais como a Web of Science, Scopus, INIS, SciElo além de verificar o Currículo Lattes. O RI-IPEN apresenta também um aspecto inovador no seu funcionamento. Por meio de metadados específicos ele está vinculado ao sistema de gerenciamento das atividades do Plano Diretor anual do IPEN (SIGEPI). Com o objetivo de fornecer dados numéricos para a elaboração dos indicadores da Produção Cientifica Institucional, disponibiliza uma tabela estatística registrando em tempo real a inserção de novos itens. Foi criado um metadado que contém um número único para cada integrante da comunidade científica do IPEN. Esse metadado se transformou em um filtro que ao ser acionado apresenta todos os trabalhos de um determinado autor independente das variáveis na forma de citação do seu nome.