Partially pyrolyzed poly(dimethylsiloxane)-based networks: thermal characterization and evaluation of the gas permeability

Detalhes bibliográficos
Autor(a) principal: José, Nadia Mamede
Data de Publicação: 2006
Outros Autores: Prado, Luis Antônio Sanches de Almeida, Schiavon, Marco A., Redondo, Simone U. A., Yoshida, Inez V. P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/14721
Resumo: Texto completo: acesso restrito. p. 299–309
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spelling José, Nadia MamedePrado, Luis Antônio Sanches de AlmeidaSchiavon, Marco A.Redondo, Simone U. A.Yoshida, Inez V. P.José, Nadia MamedePrado, Luis Antônio Sanches de AlmeidaSchiavon, Marco A.Redondo, Simone U. A.Yoshida, Inez V. P.2014-03-12T11:14:14Z20060887-6266http://repositorio.ufba.br/ri/handle/ri/14721v. 45, n. 3Texto completo: acesso restrito. p. 299–309In this investigation, the preparation and characterization of partially pyrolyzed membranes based on poly(dimethylsiloxane) (PDMS) are described. These membranes were obtained by the crosslinking of silanol-terminated PDMS with multifunctional nanoclusters derived from the reaction of pentaerythritoltriacrylate with 2-aminoethyl-3-aminopropyltrimethoxysilane and the in situ polycondensation of tetraethylortosilicate, followed by the thermal treatment of the resulting membranes at different temperatures. The partially pyrolyzed membranes were characterized with infrared spectroscopy, thermogravimetry, elemental analyses, dynamic mechanical analysis, small-angle X-ray scattering, and scanning electron microscopy. The membranes exhibited improvements in the thermal stability and mechanical strength. Even with distinct compositions with respect to the Si/O and Si/C ratios, the flexibility of these materials was maintained. The flux rates of the gases through the membranes were measured for N2, H2, O2, CH4, and CO2, at 25 °C. The permeability of the membranes changed with increases in the pyrolysis and oxidation temperatures. These membranes could be described as PDMS chains separated by inorganic clusters.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-03-12T11:14:14Z No. of bitstreams: 1 10.1002polb.21053.pdf: 598542 bytes, checksum: 7dfb49727d54b451f17e2c5edc66bb40 (MD5)Made available in DSpace on 2014-03-12T11:14:14Z (GMT). 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dc.title.pt_BR.fl_str_mv Partially pyrolyzed poly(dimethylsiloxane)-based networks: thermal characterization and evaluation of the gas permeability
dc.title.alternative.pt_BR.fl_str_mv Journal of Polymer Science Part B: Polymer Physics
title Partially pyrolyzed poly(dimethylsiloxane)-based networks: thermal characterization and evaluation of the gas permeability
spellingShingle Partially pyrolyzed poly(dimethylsiloxane)-based networks: thermal characterization and evaluation of the gas permeability
José, Nadia Mamede
Crosslinking
Mechanical properties
Networks
Polysiloxanes
Thermogravimetric analysis (TGA)
title_short Partially pyrolyzed poly(dimethylsiloxane)-based networks: thermal characterization and evaluation of the gas permeability
title_full Partially pyrolyzed poly(dimethylsiloxane)-based networks: thermal characterization and evaluation of the gas permeability
title_fullStr Partially pyrolyzed poly(dimethylsiloxane)-based networks: thermal characterization and evaluation of the gas permeability
title_full_unstemmed Partially pyrolyzed poly(dimethylsiloxane)-based networks: thermal characterization and evaluation of the gas permeability
title_sort Partially pyrolyzed poly(dimethylsiloxane)-based networks: thermal characterization and evaluation of the gas permeability
author José, Nadia Mamede
author_facet José, Nadia Mamede
Prado, Luis Antônio Sanches de Almeida
Schiavon, Marco A.
Redondo, Simone U. A.
Yoshida, Inez V. P.
author_role author
author2 Prado, Luis Antônio Sanches de Almeida
Schiavon, Marco A.
Redondo, Simone U. A.
Yoshida, Inez V. P.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv José, Nadia Mamede
Prado, Luis Antônio Sanches de Almeida
Schiavon, Marco A.
Redondo, Simone U. A.
Yoshida, Inez V. P.
José, Nadia Mamede
Prado, Luis Antônio Sanches de Almeida
Schiavon, Marco A.
Redondo, Simone U. A.
Yoshida, Inez V. P.
dc.subject.por.fl_str_mv Crosslinking
Mechanical properties
Networks
Polysiloxanes
Thermogravimetric analysis (TGA)
topic Crosslinking
Mechanical properties
Networks
Polysiloxanes
Thermogravimetric analysis (TGA)
description Texto completo: acesso restrito. p. 299–309
publishDate 2006
dc.date.issued.fl_str_mv 2006
dc.date.accessioned.fl_str_mv 2014-03-12T11:14:14Z
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://repositorio.ufba.br/ri/handle/ri/14721
dc.identifier.issn.none.fl_str_mv 0887-6266
dc.identifier.number.pt_BR.fl_str_mv v. 45, n. 3
identifier_str_mv 0887-6266
v. 45, n. 3
url http://repositorio.ufba.br/ri/handle/ri/14721
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/10.1002/polb.21053
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
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instname_str Universidade Federal da Bahia (UFBA)
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reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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