Detalhes bibliográficos
| Resumo: | Electroactive electrospun fiber mat composites based on poly (vinylidene fluoride) (PVDF) with 5 and 10% of 1-ethyl-3-methylimidazolium bis (trifluoromethanesulfonyl)amide ([C2mim][NTf2]) ionic liquid (IL) were developed for potential applications in the biomedical area. The morphology and polymer crystalline phase content of the fibers were evaluated as a function of the processing conditions. Hydrophobic random and aligned fibers have been obtained with average fiber diameters between ~700 and 500 nm, the smaller diameters corresponding to the aligned fiber mats. The results show that the charge structure of [C2mim][NTf2] induces the crystallization of the PVDF fibers in the piezoelectric B-phase with full crystallization in this phase for an ionic liquid content of 10 wt%. Furthermore, the presence of the ionic liquid also increases the degree of crystallinity of the fibers. Thermal degradation studies show a single degradation process which is strongly influenced by the polymer-IL interactions. Finally, the non-cytotoxicity of the fiber mats indicates their suitability for biomedical applications. |
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| Autores principais: | Dias, Juliana C. |
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| Outros Autores: | Correia, D. C.; Lopes, Ana C.; Ribeiro, Sylvie Oliveira; Ribeiro, Clarisse; Sencadas, Vítor João Gomes Silva; Botelho, Gabriela; Esperança, J. M. S. S.; Laza, José M.; Vilas, José L.; León, Luis M.; Lanceros-Méndez, S. |
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| Assunto: | Electroactive polymers Smart materials Electrospun fibers, Thermal degradation kinetics Tissue engineering applications |
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| Ano: | 2016 |
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| País: | Portugal |
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| Tipo de documento: | artigo |
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| Tipo de acesso: | acesso restrito |
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| Instituição associada: | Universidade do Minho |
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| Idioma: | inglês |
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| Origem: | RepositóriUM - Universidade do Minho |
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