Effects of X-ray radiation on Nafion membrane

Detalhes bibliográficos
Autor(a) principal: Almeida, Selma Helena de
Data de Publicação: 1998
Outros Autores: Kawano, Yoshio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/8269
Resumo: Texto completo: acesso restrito. p.291–297
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spelling Almeida, Selma Helena deKawano, YoshioAlmeida, Selma Helena deKawano, Yoshio2013-01-30T16:53:02Z19980141-3910http://www.repositorio.ufba.br/ri/handle/ri/8269v. 62, n. 2Texto completo: acesso restrito. p.291–297The effects of X-ray radiation on Nafion-117 membrane were investigated by electron paramagnetic resonance spectroscopy (EPR), photoacoustic infrared spectroscopy (PAS), Raman scattering and ultraviolet-visible electronic absorption spectroscopy. EPR spectrum of irradiated Nafion membrane reveals the presence of peroxy free radical similar to that found in irradiated polytetrafluoroethylene. The Raman and infrared (IR) spectra of irradiated samples show the appearance of new bands at 1458, 1700 and 1773 cm−1, that can be associated with the presence of C=O and C=C groups. In addition, Raman and IR spectra show a band intensity change associated with the stretching modes of C–O, C–S and SO3-, indicating scissions of C–S and C–O bonds and SO2 liberation. UV-Vis spectra of irradiated samples exhibit bands at 196, 230 and 273 nm, whose intensities increase with irradiation doses and with aging time.Submitted by Suelen Reis (suelen_suzane@hotmail.com) on 2013-01-30T16:53:02Z No. of bitstreams: 1 Almeida.pdf: 256655 bytes, checksum: ae6894bbfb431ccc20c12dff89071449 (MD5)Made available in DSpace on 2013-01-30T16:53:02Z (GMT). No. of bitstreams: 1 Almeida.pdf: 256655 bytes, checksum: ae6894bbfb431ccc20c12dff89071449 (MD5) Previous issue date: 1998http://dx.doi.org/10.1016/S0141-3910(98)00010-Xreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAEffects of X-ray radiation on Nafion membranePolymer Degradation and Stabilityinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINALAlmeida.pdfAlmeida.pdfapplication/pdf256655https://repositorio.ufba.br/bitstream/ri/8269/1/Almeida.pdfae6894bbfb431ccc20c12dff89071449MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/8269/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXTAlmeida.pdf.txtAlmeida.pdf.txtExtracted texttext/plain19595https://repositorio.ufba.br/bitstream/ri/8269/3/Almeida.pdf.txt77a71de908ed2831d26c936925b7d837MD53ri/82692022-07-05 14:03:44.18oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:44Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Effects of X-ray radiation on Nafion membrane
dc.title.alternative.pt_BR.fl_str_mv Polymer Degradation and Stability
title Effects of X-ray radiation on Nafion membrane
spellingShingle Effects of X-ray radiation on Nafion membrane
Almeida, Selma Helena de
title_short Effects of X-ray radiation on Nafion membrane
title_full Effects of X-ray radiation on Nafion membrane
title_fullStr Effects of X-ray radiation on Nafion membrane
title_full_unstemmed Effects of X-ray radiation on Nafion membrane
title_sort Effects of X-ray radiation on Nafion membrane
author Almeida, Selma Helena de
author_facet Almeida, Selma Helena de
Kawano, Yoshio
author_role author
author2 Kawano, Yoshio
author2_role author
dc.contributor.author.fl_str_mv Almeida, Selma Helena de
Kawano, Yoshio
Almeida, Selma Helena de
Kawano, Yoshio
description Texto completo: acesso restrito. p.291–297
publishDate 1998
dc.date.issued.fl_str_mv 1998
dc.date.accessioned.fl_str_mv 2013-01-30T16:53:02Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/8269
dc.identifier.issn.none.fl_str_mv 0141-3910
dc.identifier.number.pt_BR.fl_str_mv v. 62, n. 2
identifier_str_mv 0141-3910
v. 62, n. 2
url http://www.repositorio.ufba.br/ri/handle/ri/8269
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/S0141-3910(98)00010-X
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
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reponame_str Repositório Institucional da UFBA
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