Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranes

Detalhes bibliográficos
Autor(a) principal: Figueiredo, Ana Sofia
Data de Publicação: 2015
Outros Autores: Sánchez-Loredo, María Guadalupe, Maurício, António, Pereira, Manuel F. C., Minhalma, Miguel, Pinho, Maria Norberta de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/5852
Resumo: Cellulose acetate (CA)-silver (Ag) nanocomposite asymmetric membranes were prepared via the wet-phase inversion method by dispersing polyvinylpirrolydone-protected Ag nanoparticles in the membrane casting solutions of different compositions. Silver nanoparticles were synthesized ex situ and added to the casting solution as a concentrated aqueous colloidal dispersion. The effects of the dispersion addition on the structure and on the selective permeation properties of the membranes were studied by comparing the nanocomposites with the silver-free materials. The casting solution composition played an important role in the adequate dispersion of the silver nanoparticles in the membrane. Incorporation of nanoscale silver and the final silver content resulted in structural changes leading to an increase in the hydraulic permeability and molecular weight cut-off of the nanocomposite membranes. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41796.
id RCAP_e524d7d708d91cc9855390edc26d67ee
oai_identifier_str oai:repositorio.ipl.pt:10400.21/5852
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranesCompositesMembranesNanoparticlesNanowires and nanocrystalsProperties and characterizationCellulose acetate (CA)-silver (Ag) nanocomposite asymmetric membranes were prepared via the wet-phase inversion method by dispersing polyvinylpirrolydone-protected Ag nanoparticles in the membrane casting solutions of different compositions. Silver nanoparticles were synthesized ex situ and added to the casting solution as a concentrated aqueous colloidal dispersion. The effects of the dispersion addition on the structure and on the selective permeation properties of the membranes were studied by comparing the nanocomposites with the silver-free materials. The casting solution composition played an important role in the adequate dispersion of the silver nanoparticles in the membrane. Incorporation of nanoscale silver and the final silver content resulted in structural changes leading to an increase in the hydraulic permeability and molecular weight cut-off of the nanocomposite membranes. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41796.Wiley-BlackwellRCIPLFigueiredo, Ana SofiaSánchez-Loredo, María GuadalupeMaurício, AntónioPereira, Manuel F. C.Minhalma, MiguelPinho, Maria Norberta de2016-03-14T14:34:39Z2015-06-052015-06-05T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/5852engFIGUEIREDO, Ana Sofia; [et al.] - Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranes. Journal of Applied Polymer Science . ISSN.0021-8995. Vol. 132, N.º 21, (2015), pp. 41796 (1-11)0021-899510.1002/app.41796metadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T09:49:53Zoai:repositorio.ipl.pt:10400.21/5852Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:15:04.634528Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranes
title Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranes
spellingShingle Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranes
Figueiredo, Ana Sofia
Composites
Membranes
Nanoparticles
Nanowires and nanocrystals
Properties and characterization
title_short Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranes
title_full Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranes
title_fullStr Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranes
title_full_unstemmed Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranes
title_sort Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranes
author Figueiredo, Ana Sofia
author_facet Figueiredo, Ana Sofia
Sánchez-Loredo, María Guadalupe
Maurício, António
Pereira, Manuel F. C.
Minhalma, Miguel
Pinho, Maria Norberta de
author_role author
author2 Sánchez-Loredo, María Guadalupe
Maurício, António
Pereira, Manuel F. C.
Minhalma, Miguel
Pinho, Maria Norberta de
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv Figueiredo, Ana Sofia
Sánchez-Loredo, María Guadalupe
Maurício, António
Pereira, Manuel F. C.
Minhalma, Miguel
Pinho, Maria Norberta de
dc.subject.por.fl_str_mv Composites
Membranes
Nanoparticles
Nanowires and nanocrystals
Properties and characterization
topic Composites
Membranes
Nanoparticles
Nanowires and nanocrystals
Properties and characterization
description Cellulose acetate (CA)-silver (Ag) nanocomposite asymmetric membranes were prepared via the wet-phase inversion method by dispersing polyvinylpirrolydone-protected Ag nanoparticles in the membrane casting solutions of different compositions. Silver nanoparticles were synthesized ex situ and added to the casting solution as a concentrated aqueous colloidal dispersion. The effects of the dispersion addition on the structure and on the selective permeation properties of the membranes were studied by comparing the nanocomposites with the silver-free materials. The casting solution composition played an important role in the adequate dispersion of the silver nanoparticles in the membrane. Incorporation of nanoscale silver and the final silver content resulted in structural changes leading to an increase in the hydraulic permeability and molecular weight cut-off of the nanocomposite membranes. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41796.
publishDate 2015
dc.date.none.fl_str_mv 2015-06-05
2015-06-05T00:00:00Z
2016-03-14T14:34:39Z
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://hdl.handle.net/10400.21/5852
url http://hdl.handle.net/10400.21/5852
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv FIGUEIREDO, Ana Sofia; [et al.] - Tailoring of structures and permeation properties of asymmetric nanocomposite cellulose acetate/silver membranes. Journal of Applied Polymer Science . ISSN.0021-8995. Vol. 132, N.º 21, (2015), pp. 41796 (1-11)
0021-8995
10.1002/app.41796
dc.rights.driver.fl_str_mv metadata only access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv metadata only access
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley-Blackwell
publisher.none.fl_str_mv Wiley-Blackwell
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799133408746536960

Registros relacionados