Effects of X-ray radiation on Nafion membrane
Autor(a) principal: | |
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Data de Publicação: | 1998 |
Outros Autores: | |
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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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:ri/8269VGVybW8gZGUgTGljZW7vv71hLCBu77+9byBleGNsdXNpdm8sIHBhcmEgbyBkZXDvv71zaXRvIG5vIHJlcG9zaXTvv71yaW8gSW5zdGl0dWNpb25hbCBkYSBVRkJBCgogICAgUGVsbyBwcm9jZXNzbyBkZSBzdWJtaXNz77+9byBkZSBkb2N1bWVudG9zLCBvIGF1dG9yIG91IHNldQpyZXByZXNlbnRhbnRlIGxlZ2FsLCBhbyBhY2VpdGFyIGVzc2UgdGVybW8gZGUgbGljZW7vv71hLCBjb25jZWRlIGFvClJlcG9zaXTvv71yaW8gSW5zdGl0dWNpb25hbCBkYSBVbml2ZXJzaWRhZGUgRmVkZXJhbCBkYSBCYWhpYSBvIGRpcmVpdG8KZGUgbWFudGVyIHVtYSBj77+9cGlhIGVtIHNldSByZXBvc2l077+9cmlvIGNvbSBhIGZpbmFsaWRhZGUsIHByaW1laXJhLCAKZGUgcHJlc2VydmHvv73vv71vLiBFc3NlcyB0ZXJtb3MsIG7vv71vIGV4Y2x1c2l2b3MsIG1hbnTvv71tIG9zIGRpcmVpdG9zIGRlIAphdXRvci9jb3B5cmlnaHQsIG1hcyBlbnRlbmRlIG8gZG9jdW1lbnRvIGNvbW8gcGFydGUgZG8gYWNlcnZvIGludGVsZWN0dWFsIGRlc3NhIFVuaXZlcnNpZGFkZS4gCgogICAgUGFyYSBvcyBkb2N1bWVudG9zIHB1YmxpY2Fkb3MgY29tIHJlcGFzc2UgZGUgZGlyZWl0b3MgZGUgZGlzdHJpYnVp77+977+9bywgZXNzZSB0ZXJtbyBkZSBsaWNlbu+/vWEgZW50ZW5kZSBxdWU6IAoKICAgIE1hbnRlbmRvIG9zICBkaXJlaXRvcyBhdXRvcmFpcywgcmVwYXNzYWRvcyBhIHRlcmNlaXJvcywgZW0gY2FzbyAKZGUgcHVibGljYe+/ve+/vWVzLCBvIHJlcG9zaXTvv71yaW8gcG9kZSByZXN0cmluZ2lyIG8gYWNlc3NvIGFvIHRleHRvIAppbnRlZ3JhbCwgbWFzIGxpYmVyYSBhcyBpbmZvcm1h77+977+9ZXMgc29icmUgbyBkb2N1bWVudG8gKE1ldGFkYWRvcyBkZXNjcml0aXZvcykuCgogRGVzdGEgZm9ybWEsIGF0ZW5kZW5kbyBhb3MgYW5zZWlvcyBkZXNzYSB1bml2ZXJzaWRhZGUgCmVtIG1hbnRlciBzdWEgcHJvZHXvv73vv71vIGNpZW5077+9ZmljYSBjb20gYXMgcmVzdHJp77+977+9ZXMgaW1wb3N0YXMgcGVsb3MgCmVkaXRvcmVzIGRlIHBlcmnvv71kaWNvcy4gCgogICAgUGFyYSBhcyBwdWJsaWNh77+977+9ZXMgZW0gaW5pY2lhdGl2YXMgcXVlIHNlZ3VlbSBhIHBvbO+/vXRpY2EgZGUgCkFjZXNzbyBBYmVydG8sIG9zIGRlcO+/vXNpdG9zIGNvbXB1bHPvv71yaW9zIG5lc3NlIHJlcG9zaXTvv71yaW8gbWFudO+/vW0gCm9zIGRpcmVpdG9zIGF1dG9yYWlzLCBtYXMgbWFudO+/vW0gbyBhY2Vzc28gaXJyZXN0cml0byBhbyBtZXRhZGFkb3MgCmUgdGV4dG8gY29tcGxldG8uIEFzc2ltLCBhIGFjZWl0Ye+/ve+/vW8gZGVzc2UgdGVybW8gbu+/vW8gbmVjZXNzaXRhIGRlIApjb25zZW50aW1lbnRvIHBvciBwYXJ0ZSBkZSBhdXRvcmVzL2RldGVudG9yZXMgZG9zIGRpcmVpdG9zLCBwb3IgCmVzdGFyZW0gZW0gaW5pY2lhdGl2YXMgZGUgYWNlc3NvIGFiZXJ0by4KCiAgICBFbSBhbWJvcyBvIGNhc28sIGVzc2UgdGVybW8gZGUgbGljZW7vv71hLCBwb2RlIHNlciBhY2VpdG8gcGVsbyAKYXV0b3IsIGRldGVudG9yZXMgZGUgZGlyZWl0b3MgZS9vdSB0ZXJjZWlyb3MgYW1wYXJhZG9zIHBlbGEgCnVuaXZlcnNpZGFkZS4gRGV2aWRvIGFvcyBkaWZlcmVudGVzIHByb2Nlc3NvcyBwZWxvIHF1YWwgYSBzdWJtaXNz77+9byAKcG9kZSBvY29ycmVyLCBvIHJlcG9zaXTvv71yaW8gcGVybWl0ZSBhIGFjZWl0Ye+/ve+/vW8gZGEgbGljZW7vv71hIHBvciAKdGVyY2Vpcm9zLCBzb21lbnRlIG5vcyBjYXNvcyBkZSBkb2N1bWVudG9zIHByb2R1emlkb3MgcG9yIGludGVncmFudGVzIApkYSBVRkJBIGUgc3VibWV0aWRvcyBwb3IgcGVzc29hcyBhbXBhcmFkYXMgcG9yIGVzdGEgaW5zdGl0dWnvv73vv71vLgo=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 |
eu_rights_str_mv |
openAccess |
dc.source.pt_BR.fl_str_mv |
http://dx.doi.org/10.1016/S0141-3910(98)00010-X |
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reponame:Repositório Institucional da UFBA instname:Universidade Federal da Bahia (UFBA) instacron:UFBA |
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Universidade Federal da Bahia (UFBA) |
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UFBA |
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UFBA |
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Repositório Institucional da UFBA |
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Repositório Institucional da UFBA |
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