Fabrication of poly(lactic acid) – poly(ethylene oxide) electrospun membranes with controlled micro to nanofiber sizes

Detalhes bibliográficos
Autor(a) principal: Ribeiro, C.
Data de Publicação: 2012
Outros Autores: Sencadas, Vítor João Gomes Silva, Caparrós Vásquez, Cristina Maria, Gómez Ribelles, J. L., Lanceros-Méndez, S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/22656
Resumo: Biodegradable poly(L-lactide acid) (PLLA) nanofiber membranes were prepared by electrospinning of PLLA and poly(ethylene oxide) (PEO). The selective removal of PEO by water allows to obtain smaller fiber diameters and to increase the porosity of the membranes in comparison to PLLA membranes obtained under the same electrospinning conditions. After removal of PEO membranes with fiber sizes of 260 nm and average porosity close to 80% are obtained. Thermal and infrared results confirm the poor miscibility of PLLA and PEO, with the PEO randomly distributed along the PLLA fibers. On the other, PLLA and PEO mixing strongly affect their respective degradation temperatures. The influence of the PEO in the electrospinning process is discussed and the results are correlated to the evolution of the PLLA fiber diameter.
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spelling Fabrication of poly(lactic acid) – poly(ethylene oxide) electrospun membranes with controlled micro to nanofiber sizesElectrospinningMembranesNanofibersBiomaterialsScience & TechnologyBiodegradable poly(L-lactide acid) (PLLA) nanofiber membranes were prepared by electrospinning of PLLA and poly(ethylene oxide) (PEO). The selective removal of PEO by water allows to obtain smaller fiber diameters and to increase the porosity of the membranes in comparison to PLLA membranes obtained under the same electrospinning conditions. After removal of PEO membranes with fiber sizes of 260 nm and average porosity close to 80% are obtained. Thermal and infrared results confirm the poor miscibility of PLLA and PEO, with the PEO randomly distributed along the PLLA fibers. On the other, PLLA and PEO mixing strongly affect their respective degradation temperatures. The influence of the PEO in the electrospinning process is discussed and the results are correlated to the evolution of the PLLA fiber diameter.American Scientific PublishersUniversidade do MinhoRibeiro, C.Sencadas, Vítor João Gomes SilvaCaparrós Vásquez, Cristina MariaGómez Ribelles, J. L.Lanceros-Méndez, S.20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/22656eng1533-488010.1166/jnn.2012.454422962817info: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:RCAAP2023-07-21T12:21:50Zoai:repositorium.sdum.uminho.pt:1822/22656Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:15:13.065305Repositório 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 Fabrication of poly(lactic acid) – poly(ethylene oxide) electrospun membranes with controlled micro to nanofiber sizes
title Fabrication of poly(lactic acid) – poly(ethylene oxide) electrospun membranes with controlled micro to nanofiber sizes
spellingShingle Fabrication of poly(lactic acid) – poly(ethylene oxide) electrospun membranes with controlled micro to nanofiber sizes
Ribeiro, C.
Electrospinning
Membranes
Nanofibers
Biomaterials
Science & Technology
title_short Fabrication of poly(lactic acid) – poly(ethylene oxide) electrospun membranes with controlled micro to nanofiber sizes
title_full Fabrication of poly(lactic acid) – poly(ethylene oxide) electrospun membranes with controlled micro to nanofiber sizes
title_fullStr Fabrication of poly(lactic acid) – poly(ethylene oxide) electrospun membranes with controlled micro to nanofiber sizes
title_full_unstemmed Fabrication of poly(lactic acid) – poly(ethylene oxide) electrospun membranes with controlled micro to nanofiber sizes
title_sort Fabrication of poly(lactic acid) – poly(ethylene oxide) electrospun membranes with controlled micro to nanofiber sizes
author Ribeiro, C.
author_facet Ribeiro, C.
Sencadas, Vítor João Gomes Silva
Caparrós Vásquez, Cristina Maria
Gómez Ribelles, J. L.
Lanceros-Méndez, S.
author_role author
author2 Sencadas, Vítor João Gomes Silva
Caparrós Vásquez, Cristina Maria
Gómez Ribelles, J. L.
Lanceros-Méndez, S.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Ribeiro, C.
Sencadas, Vítor João Gomes Silva
Caparrós Vásquez, Cristina Maria
Gómez Ribelles, J. L.
Lanceros-Méndez, S.
dc.subject.por.fl_str_mv Electrospinning
Membranes
Nanofibers
Biomaterials
Science & Technology
topic Electrospinning
Membranes
Nanofibers
Biomaterials
Science & Technology
description Biodegradable poly(L-lactide acid) (PLLA) nanofiber membranes were prepared by electrospinning of PLLA and poly(ethylene oxide) (PEO). The selective removal of PEO by water allows to obtain smaller fiber diameters and to increase the porosity of the membranes in comparison to PLLA membranes obtained under the same electrospinning conditions. After removal of PEO membranes with fiber sizes of 260 nm and average porosity close to 80% are obtained. Thermal and infrared results confirm the poor miscibility of PLLA and PEO, with the PEO randomly distributed along the PLLA fibers. On the other, PLLA and PEO mixing strongly affect their respective degradation temperatures. The influence of the PEO in the electrospinning process is discussed and the results are correlated to the evolution of the PLLA fiber diameter.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-01-01T00:00:00Z
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/1822/22656
url http://hdl.handle.net/1822/22656
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1533-4880
10.1166/jnn.2012.4544
22962817
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Scientific Publishers
publisher.none.fl_str_mv American Scientific Publishers
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
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