Improvement of electrospun polymer fiber meshes pore size by femtosecond laser irradiation

Detalhes bibliográficos
Autor(a) principal: Rebollar, Esther
Data de Publicação: 2011
Outros Autores: Cordero, Diego, Martins, Albino, Chiussi, Stefano, Reis, R. L., Neves, N. M., Leon, Bétty
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/12937
Resumo: Polymer meshes have recently attracted great attention due to their great variety of aplications in fields such as tissue engineering and drug delivery. Poly( -caprolactone) nanofibers were prepared by electrospinning giving rise to porous meshes. However, for some applications in tissue engineering where, for instance, cell migration into the inner regions of the mesh is aimed, the pore size obtained by conventional techniques is too narrow. To improve the pore size, laser irradiation with femtosecond pulses (i.e., negligible heat diffusion into the polymer material and confined excitation energy) is performed. A detailed study of the influence of the pulse energy, pulse length, and number of pulses on the topography of electrospun fiber meshes has been carried out, and the irradiated areas have been studied by scanning electron microscopy, contact angle measurements and spectroscopic techniques. The results show that using the optimal laser parameters, micropores are formed and the nature of the fibers is preserved.
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spelling Improvement of electrospun polymer fiber meshes pore size by femtosecond laser irradiationPore sizeFemtosecond laserFiber meshElectrospinningLaser ablationScience & TechnologyPolymer meshes have recently attracted great attention due to their great variety of aplications in fields such as tissue engineering and drug delivery. Poly( -caprolactone) nanofibers were prepared by electrospinning giving rise to porous meshes. However, for some applications in tissue engineering where, for instance, cell migration into the inner regions of the mesh is aimed, the pore size obtained by conventional techniques is too narrow. To improve the pore size, laser irradiation with femtosecond pulses (i.e., negligible heat diffusion into the polymer material and confined excitation energy) is performed. A detailed study of the influence of the pulse energy, pulse length, and number of pulses on the topography of electrospun fiber meshes has been carried out, and the irradiated areas have been studied by scanning electron microscopy, contact angle measurements and spectroscopic techniques. The results show that using the optimal laser parameters, micropores are formed and the nature of the fibers is preserved.European Integrated Project GENOSTEM (LSH-STREP-CT-2003-503161); European Network of Excellence EXPERTISSUES (NMP3-CT-2004-500283); Interreg III Project Proteus (SP1P151/03); Xunta de Galicia (Consolidación 2006/12); Axudas para adquisición de instrumentación científica 2004, PGIDIT04PXI32201IF; Ángeles Alvariño Program; Universidad de Vigo; Portuguese Foundation for Science and Technology for the PhD grant SFRH/BD/24382/2005.ElsevierUniversidade do MinhoRebollar, EstherCordero, DiegoMartins, AlbinoChiussi, StefanoReis, R. L.Neves, N. M.Leon, Bétty2011-02-152011-02-15T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/12937eng0169-433210.1016/j.apsusc.2010.12.002http://www.sciencedirect.com/science/article/pii/S016943321001723Xinfo: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:RCAAP2024-05-11T05:08:54Zoai:repositorium.sdum.uminho.pt:1822/12937Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-11T05:08:54Repositório 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 Improvement of electrospun polymer fiber meshes pore size by femtosecond laser irradiation
title Improvement of electrospun polymer fiber meshes pore size by femtosecond laser irradiation
spellingShingle Improvement of electrospun polymer fiber meshes pore size by femtosecond laser irradiation
Rebollar, Esther
Pore size
Femtosecond laser
Fiber mesh
Electrospinning
Laser ablation
Science & Technology
title_short Improvement of electrospun polymer fiber meshes pore size by femtosecond laser irradiation
title_full Improvement of electrospun polymer fiber meshes pore size by femtosecond laser irradiation
title_fullStr Improvement of electrospun polymer fiber meshes pore size by femtosecond laser irradiation
title_full_unstemmed Improvement of electrospun polymer fiber meshes pore size by femtosecond laser irradiation
title_sort Improvement of electrospun polymer fiber meshes pore size by femtosecond laser irradiation
author Rebollar, Esther
author_facet Rebollar, Esther
Cordero, Diego
Martins, Albino
Chiussi, Stefano
Reis, R. L.
Neves, N. M.
Leon, Bétty
author_role author
author2 Cordero, Diego
Martins, Albino
Chiussi, Stefano
Reis, R. L.
Neves, N. M.
Leon, Bétty
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Rebollar, Esther
Cordero, Diego
Martins, Albino
Chiussi, Stefano
Reis, R. L.
Neves, N. M.
Leon, Bétty
dc.subject.por.fl_str_mv Pore size
Femtosecond laser
Fiber mesh
Electrospinning
Laser ablation
Science & Technology
topic Pore size
Femtosecond laser
Fiber mesh
Electrospinning
Laser ablation
Science & Technology
description Polymer meshes have recently attracted great attention due to their great variety of aplications in fields such as tissue engineering and drug delivery. Poly( -caprolactone) nanofibers were prepared by electrospinning giving rise to porous meshes. However, for some applications in tissue engineering where, for instance, cell migration into the inner regions of the mesh is aimed, the pore size obtained by conventional techniques is too narrow. To improve the pore size, laser irradiation with femtosecond pulses (i.e., negligible heat diffusion into the polymer material and confined excitation energy) is performed. A detailed study of the influence of the pulse energy, pulse length, and number of pulses on the topography of electrospun fiber meshes has been carried out, and the irradiated areas have been studied by scanning electron microscopy, contact angle measurements and spectroscopic techniques. The results show that using the optimal laser parameters, micropores are formed and the nature of the fibers is preserved.
publishDate 2011
dc.date.none.fl_str_mv 2011-02-15
2011-02-15T00:00:00Z
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/1822/12937
url http://hdl.handle.net/1822/12937
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0169-4332
10.1016/j.apsusc.2010.12.002
http://www.sciencedirect.com/science/article/pii/S016943321001723X
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 Elsevier
publisher.none.fl_str_mv Elsevier
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 mluisa.alvim@gmail.com
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