Accelerated environmental degradation of gamma irradiated polypropylene and thermal analysis

Detalhes bibliográficos
Autor(a) principal: ROMANO, REBECA S.G.
Data de Publicação: 2017
Outros Autores: OLIANI, WASHINGTON L., PARRA, DUCLERC F., LUGAO, ADEMAR B., CONGRESSO BRASILEIRO, 10.; E CONGRESSO PAN AMERICANO DE AN??LISE T??RMICA E CALORIMETRIA, 4.
Tipo de documento: Artigo de conferência
Título da fonte: Repositório Institucional do IPEN
Texto Completo: http://repositorio.ipen.br/handle/123456789/27529
Resumo: Polypropylene (PP) is one of most important plastic commodities in the world. It can be used in many applications due to its relation of outstanding properties at low cost. However, PP has very low environmental degradation rate, therefore the discarded PP can accumulate in the environment. The aim of this study is the degradation control of PP using gamma radiation. Dumbbell samples were manufactured by injection molding and after irradiated using gamma radiation with different doses: 5 kGy, 12.5 kGy and 20 kGy. The irradiated samples were exposed to environmental aging during 90 days and characterized by Scanning Electron Microscopy (SEM), Thermogravimetric Analysis (TG) and Differential Scanning Calorimetry (DSC). The dumbbell samples PP 5 kGy, 12.5 kGy and 20 kGy, exposed to environmental aging, showed intense oxidation with presence of surface cracks compared with the PP non-irradiated.
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spelling 2017-05-29T13:51:49Z2017-05-29T13:51:49Z17-20 de abril, 2016http://repositorio.ipen.br/handle/123456789/27529Polypropylene (PP) is one of most important plastic commodities in the world. It can be used in many applications due to its relation of outstanding properties at low cost. However, PP has very low environmental degradation rate, therefore the discarded PP can accumulate in the environment. The aim of this study is the degradation control of PP using gamma radiation. Dumbbell samples were manufactured by injection molding and after irradiated using gamma radiation with different doses: 5 kGy, 12.5 kGy and 20 kGy. The irradiated samples were exposed to environmental aging during 90 days and characterized by Scanning Electron Microscopy (SEM), Thermogravimetric Analysis (TG) and Differential Scanning Calorimetry (DSC). The dumbbell samples PP 5 kGy, 12.5 kGy and 20 kGy, exposed to environmental aging, showed intense oxidation with presence of surface cracks compared with the PP non-irradiated.Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2017-05-29T13:51:49Z No. of bitstreams: 1 22886.pdf: 388849 bytes, checksum: 12c981f99a9e26fea3a630b59fdba187 (MD5)Made available in DSpace on 2017-05-29T13:51:49Z (GMT). No. of bitstreams: 1 22886.pdf: 388849 bytes, checksum: 12c981f99a9e26fea3a630b59fdba187 (MD5)S??o Paulo: Associa????o Brasileira de An??lise T??rmica e Calorimetriagamma radiationcalorimetrycomparative evaluationsoxidationphysical radiation effectsradiation dosesthermal gravimetric analysispolypropylenesalessurfacesAccelerated environmental degradation of gamma irradiated polypropylene and thermal analysisinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectABRATECNS??o Paulo, SPROMANO, REBECA S.G.OLIANI, WASHINGTON L.PARRA, DUCLERC F.LUGAO, ADEMAR B.CONGRESSO BRASILEIRO, 10.; E CONGRESSO PAN AMERICANO DE AN??LISE T??RMICA E CALORIMETRIA, 4.info:eu-repo/semantics/openAccessreponame:Repositório Institucional do IPENinstname:Instituto de Pesquisas Energéticas e Nucleares (IPEN)instacron:IPEN228862016ROMANO, REBECA S.G.OLIANI, WASHINGTON L.PARRA, DUCLERC F.LUGAO, ADEMAR B.17-05Anais140265821562339ROMANO, REBECA S.G.:14026:740:SOLIANI, WASHINGTON L.:5821:750:NPARRA, DUCLERC F.:562:740:NLUGAO, ADEMAR B.:339:740:NORIGINAL22886.pdf22886.pdfapplication/pdf388849http://repositorio.ipen.br/bitstream/123456789/27529/1/22886.pdf12c981f99a9e26fea3a630b59fdba187MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.ipen.br/bitstream/123456789/27529/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52123456789/275292021-08-24 15:41:31.959oai:repositorio.ipen.br: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Repositório InstitucionalPUBhttp://repositorio.ipen.br/oai/requestbibl@ipen.bropendoar:45102021-08-24T15:41:31Repositório Institucional do IPEN - Instituto de Pesquisas Energéticas e Nucleares (IPEN)false
dc.title.pt_BR.fl_str_mv Accelerated environmental degradation of gamma irradiated polypropylene and thermal analysis
title Accelerated environmental degradation of gamma irradiated polypropylene and thermal analysis
spellingShingle Accelerated environmental degradation of gamma irradiated polypropylene and thermal analysis
ROMANO, REBECA S.G.
gamma radiation
calorimetry
comparative evaluations
oxidation
physical radiation effects
radiation doses
thermal gravimetric analysis
polypropylene
sales
surfaces
title_short Accelerated environmental degradation of gamma irradiated polypropylene and thermal analysis
title_full Accelerated environmental degradation of gamma irradiated polypropylene and thermal analysis
title_fullStr Accelerated environmental degradation of gamma irradiated polypropylene and thermal analysis
title_full_unstemmed Accelerated environmental degradation of gamma irradiated polypropylene and thermal analysis
title_sort Accelerated environmental degradation of gamma irradiated polypropylene and thermal analysis
author ROMANO, REBECA S.G.
author_facet ROMANO, REBECA S.G.
OLIANI, WASHINGTON L.
PARRA, DUCLERC F.
LUGAO, ADEMAR B.
CONGRESSO BRASILEIRO, 10.; E CONGRESSO PAN AMERICANO DE AN??LISE T??RMICA E CALORIMETRIA, 4.
author_role author
author2 OLIANI, WASHINGTON L.
PARRA, DUCLERC F.
LUGAO, ADEMAR B.
CONGRESSO BRASILEIRO, 10.; E CONGRESSO PAN AMERICANO DE AN??LISE T??RMICA E CALORIMETRIA, 4.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv ROMANO, REBECA S.G.
OLIANI, WASHINGTON L.
PARRA, DUCLERC F.
LUGAO, ADEMAR B.
CONGRESSO BRASILEIRO, 10.; E CONGRESSO PAN AMERICANO DE AN??LISE T??RMICA E CALORIMETRIA, 4.
dc.subject.por.fl_str_mv gamma radiation
calorimetry
comparative evaluations
oxidation
physical radiation effects
radiation doses
thermal gravimetric analysis
polypropylene
sales
surfaces
topic gamma radiation
calorimetry
comparative evaluations
oxidation
physical radiation effects
radiation doses
thermal gravimetric analysis
polypropylene
sales
surfaces
description Polypropylene (PP) is one of most important plastic commodities in the world. It can be used in many applications due to its relation of outstanding properties at low cost. However, PP has very low environmental degradation rate, therefore the discarded PP can accumulate in the environment. The aim of this study is the degradation control of PP using gamma radiation. Dumbbell samples were manufactured by injection molding and after irradiated using gamma radiation with different doses: 5 kGy, 12.5 kGy and 20 kGy. The irradiated samples were exposed to environmental aging during 90 days and characterized by Scanning Electron Microscopy (SEM), Thermogravimetric Analysis (TG) and Differential Scanning Calorimetry (DSC). The dumbbell samples PP 5 kGy, 12.5 kGy and 20 kGy, exposed to environmental aging, showed intense oxidation with presence of surface cracks compared with the PP non-irradiated.
publishDate 2017
dc.date.evento.pt_BR.fl_str_mv 17-20 de abril, 2016
dc.date.accessioned.fl_str_mv 2017-05-29T13:51:49Z
dc.date.available.fl_str_mv 2017-05-29T13:51:49Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://repositorio.ipen.br/handle/123456789/27529
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dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.coverage.pt_BR.fl_str_mv N
dc.publisher.none.fl_str_mv S??o Paulo: Associa????o Brasileira de An??lise T??rmica e Calorimetria
publisher.none.fl_str_mv S??o Paulo: Associa????o Brasileira de An??lise T??rmica e Calorimetria
dc.source.none.fl_str_mv reponame:Repositório Institucional do IPEN
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instname_str Instituto de Pesquisas Energéticas e Nucleares (IPEN)
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institution IPEN
reponame_str Repositório Institucional do IPEN
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