Characterization of asymmetric membranes of cellulose acetate from biomass: Newspaper and mango seed

Detalhes bibliográficos
Autor(a) principal: Meireles, Carla da Silva
Data de Publicação: 2010
Outros Autores: Rodrigues Filho, Guimes, Ferreira Júnior, Moacir Fernandes, Cerqueira, Daniel Alves, Assunção, Rosana Maria Nascimento de, Ribeiro, Elaine Angélica Mundim, Poletto, Patricia, Zeni, Mara
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/5787
Resumo: Acesso restrito: Texto completo. p. 954-961
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spelling Meireles, Carla da SilvaRodrigues Filho, GuimesFerreira Júnior, Moacir FernandesCerqueira, Daniel AlvesAssunção, Rosana Maria Nascimento deRibeiro, Elaine Angélica MundimPoletto, PatriciaZeni, MaraMeireles, Carla da SilvaRodrigues Filho, GuimesFerreira Júnior, Moacir FernandesCerqueira, Daniel AlvesAssunção, Rosana Maria Nascimento deRibeiro, Elaine Angélica MundimPoletto, PatriciaZeni, Mara2012-05-08T12:29:34Z20100144-8617http://www.repositorio.ufba.br/ri/handle/ri/5787v. 80, n. 3Acesso restrito: Texto completo. p. 954-961Asymmetric membranes may be used in a broad range of applications such as reverse osmosis, hemodialysis and separation of organic mixtures. In this paper, asymmetric membranes were produced using cellulose acetate (CA) from biomass: newspaper and mango seed. The degree of substitution of CA was 2.65 ± 0.07. Different formulations were used to prepare the CA membranes: CA/dichloromethane/water with and without magnesium perchlorate. The asymmetry of the membranes was characterized by scanning electron microscopy (SEM). Membranes produced with magnesium perchlorate presented higher water vapor flux than those produced without this salt. This difference is due to pore formation in the membrane skin when using magnesium perchlorate. Membrane substructure showed to be a determining factor in ion diffusion experiments. The coefficient of ion diffusion for the membrane of cellulose acetate from mango seed was 1.82 10 8 cm2 s 1 while for the membrane of cellulose acetate from newspaper was 7.43 10 8 cm2 s 1 which similar to the value reported in the literature for commercial CA (8.46 10 8 cm2 s 1).Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-05-08T12:29:34Z No. of bitstreams: 1 __ac.els-cdn.com_S014486...2e789591e3a9b1aa20a108f5b8d11.pdf: 488243 bytes, checksum: 8b4c36156eecb856312492e78e4ee406 (MD5)Made available in DSpace on 2012-05-08T12:29:34Z (GMT). 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dc.title.pt_BR.fl_str_mv Characterization of asymmetric membranes of cellulose acetate from biomass: Newspaper and mango seed
dc.title.alternative.pt_BR.fl_str_mv Carbohydrate Polymers
title Characterization of asymmetric membranes of cellulose acetate from biomass: Newspaper and mango seed
spellingShingle Characterization of asymmetric membranes of cellulose acetate from biomass: Newspaper and mango seed
Meireles, Carla da Silva
Mango seed
Newspaper
Cellulose acetate
Asymmetric membranes
title_short Characterization of asymmetric membranes of cellulose acetate from biomass: Newspaper and mango seed
title_full Characterization of asymmetric membranes of cellulose acetate from biomass: Newspaper and mango seed
title_fullStr Characterization of asymmetric membranes of cellulose acetate from biomass: Newspaper and mango seed
title_full_unstemmed Characterization of asymmetric membranes of cellulose acetate from biomass: Newspaper and mango seed
title_sort Characterization of asymmetric membranes of cellulose acetate from biomass: Newspaper and mango seed
author Meireles, Carla da Silva
author_facet Meireles, Carla da Silva
Rodrigues Filho, Guimes
Ferreira Júnior, Moacir Fernandes
Cerqueira, Daniel Alves
Assunção, Rosana Maria Nascimento de
Ribeiro, Elaine Angélica Mundim
Poletto, Patricia
Zeni, Mara
author_role author
author2 Rodrigues Filho, Guimes
Ferreira Júnior, Moacir Fernandes
Cerqueira, Daniel Alves
Assunção, Rosana Maria Nascimento de
Ribeiro, Elaine Angélica Mundim
Poletto, Patricia
Zeni, Mara
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Meireles, Carla da Silva
Rodrigues Filho, Guimes
Ferreira Júnior, Moacir Fernandes
Cerqueira, Daniel Alves
Assunção, Rosana Maria Nascimento de
Ribeiro, Elaine Angélica Mundim
Poletto, Patricia
Zeni, Mara
Meireles, Carla da Silva
Rodrigues Filho, Guimes
Ferreira Júnior, Moacir Fernandes
Cerqueira, Daniel Alves
Assunção, Rosana Maria Nascimento de
Ribeiro, Elaine Angélica Mundim
Poletto, Patricia
Zeni, Mara
dc.subject.por.fl_str_mv Mango seed
Newspaper
Cellulose acetate
Asymmetric membranes
topic Mango seed
Newspaper
Cellulose acetate
Asymmetric membranes
description Acesso restrito: Texto completo. p. 954-961
publishDate 2010
dc.date.issued.fl_str_mv 2010
dc.date.accessioned.fl_str_mv 2012-05-08T12:29:34Z
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/5787
dc.identifier.issn.none.fl_str_mv 0144-8617
dc.identifier.number.pt_BR.fl_str_mv v. 80, n. 3
identifier_str_mv 0144-8617
v. 80, n. 3
url http://www.repositorio.ufba.br/ri/handle/ri/5787
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 DOI: 10.1016/j.carbpol.2010.01.012
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
instname_str Universidade Federal da Bahia (UFBA)
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reponame_str Repositório Institucional da UFBA
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