Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/22647
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Dias, J. C. | - |
dc.contributor.author | Ribeiro, C. | - |
dc.contributor.author | Sencadas, Vítor João Gomes Silva | - |
dc.contributor.author | Botelho, Gabriela | - |
dc.contributor.author | Gómez Ribelles, J. L. | - |
dc.contributor.author | Lanceros-Méndez, S. | - |
dc.date.accessioned | 2013-01-15T18:44:33Z | - |
dc.date.available | 2013-01-15T18:44:33Z | - |
dc.date.issued | 2012-09 | - |
dc.identifier.issn | 0142-9418 | por |
dc.identifier.uri | https://hdl.handle.net/1822/22647 | - |
dc.description.abstract | Hydrolytic degradation of electrospun mats of poly(L-lactic acid), PLLA, as a function of crystallinity and fiber diameter has been studied. The degradation in a saline phosphate buffer solution (PBS) up to 20 weeks produced a slight decrease in the sample mass but a clear decrease of the polymer average molecular weight in the amorphous fibers. The aforementioned effect decreases as crystallinity increases. Important for applications is that morphological characteristics of the membranes such as average fiber diameter and membrane porosity are also affected by the degradation process. Fiber diameter increases while membrane porosity decreases, resulting in closer packed fibers due to the release of internal tensions related to the electrospinning and/or thermal treatment processes. | por |
dc.description.sponsorship | This work is funded by FEDER funds through the "Programa Operacional Factores de Competitividade - COMPETE" and by national funds arranged by FCT - Fundacao para a Ciencia e a Tecnologia, project references NANO/NMed-SD/0156/2007, PTDC/CTM/73030/2006 and PTDC/CTM/69316/2006. The authors also thank support from the COST Action MP1003, 2010 'European Scientific Network for Artificial Muscles'. V.S. thanks the FCT for the SFRH/BPD/63148/2009 grant. C. R. thanks the Iberian Institute of Nanotechnology Laboratory (IINL) for a PhD grant. JLGR acknowledge the support of the Spanish Ministry of Education through project No. MAT2010-21611-C03-01 (including the FEDER financial support). | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.rights | restrictedAccess | por |
dc.subject | Poly (L-lactic acid) | por |
dc.subject | Electrospun nanofibers | por |
dc.subject | In-vitro degradation | por |
dc.subject | Viscosity average molecular weight | por |
dc.title | Influence of fiber diameter and crystallinity on the stability of electrospun poly(L-lactic acid) membranes to hydrolytic degradation | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | http://ac.els-cdn.com/S014294181200092X/1-s2.0-S014294181200092X-main.pdf?_tid=e6e8181c-5f45-11e2-b853-00000aacb35e&acdnat=1358276640_e6a313d60cab80beeab0e959c69446cb | por |
sdum.publicationstatus | published | por |
oaire.citationStartPage | 770 | por |
oaire.citationEndPage | 776 | por |
oaire.citationIssue | 6 | por |
oaire.citationTitle | Polymer Testing | por |
oaire.citationVolume | 31 | por |
dc.identifier.doi | 10.1016/j.polymertesting.2012.05.007 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Polymer Testing | por |
Aparece nas coleções: | CDF - FCD - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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PT-II-2012.pdf Acesso restrito! | 918,88 kB | Adobe PDF | Ver/Abrir |