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https://hdl.handle.net/1822/12479| Título: | The role of solvent evaporation in the microstructure of electroactive β-poly(vinylidene fluoride) membranes obtained by isothermal crystallization |
| Autor(es): | Magalhães, R. Durães, N. Silva, J. Silva, M. Sencadas, Vítor João Gomes Silva Botelho, Gabriela Gómez Ribelles, J. L. Lanceros-Méndez, S. |
| Palavras-chave: | Electroactive membranes PVDF Solvent evaporation Phase diagram |
| Data: | 2011 |
| Editora: | Taylor and Francis |
| Revista: | Soft Materials |
| Citação: | "Soft Materials." ISSN 1539-445X. 9:1 (2011) 1-14. |
| Resumo(s): | Electroactive β-poly(vinylidene fluoride) membranes were obtained by isothermal crystallization from the solution. Different morphologies and microstructures were obtained by crystallizing at different temperatures. The mechanism and kinetics of solvent evaporation from the polymeric solution were investigated using isothermal thermogravimetric analysis. The kinetic parameters and the activation energy were also calculated. The solvent evaporation is ruled by two steps, related with a metastable - unstable - metastable transition in the solution phase diagram. Scanning electron microscopy revealed the porous structure and the variations of the morphology with the variation of the isothermal evaporation temperature. Finally, the infrared spectroscopy measurements confirm that the polymer crystallizes in the electroactive β-phase of PVDF. |
| Tipo: | Artigo |
| URI: | https://hdl.handle.net/1822/12479 |
| DOI: | 10.1080/1539445X.2010.525442 |
| ISSN: | 1539-445X 1539-4468 |
| Versão da editora: | http://dx.doi.org/10.1080/1539445X.2010.525442 |
| Arbitragem científica: | yes |
| Acesso: | Acesso restrito UMinho |
| Aparece nas coleções: | CDF - FCD - Artigos/Papers (with refereeing) CDQuim - Artigos (Papers) IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
| Ficheiro | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| SM_2011.pdf Acesso restrito! | 534,51 kB | Adobe PDF | Ver/Abrir |
