Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/230
Título: | FTIR and DSC Studies of Mechanically Deformed β-VDF Films |
Autor(es): | Lanceros-Méndez, S. Mano, J. F. Costa, A. M. Schmidt, V. H. |
Palavras-chave: | Mechanical anisotropy Plastic deformation PVDF [poly(vinylidene fluoride)] Vibrational modes PVDF |
Data: | 2001 |
Editora: | Marcel Dekker |
Revista: | Journal of Macromolecular Science Part B Physics |
Citação: | S. Lanceros-Méndez, J. F. Mano, A. M. Costa & V. H. Schmidt (2001) FTIR and DSC Studies of Mechanically Deformed β-VDF Films, Journal of Macromolecular Science, Part B, 40:3-4, 517-527, DOI: 10.1081/MB-100106174 |
Resumo(s): | Films of semicrystalline poly(vinylidene fluoride) (PVDF) in the β-phase were studied by Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). The main goal of this study was to improve the understanding of the structural changes that occur in β-PVDF during a mechanical deformation process. FTIR spectroscopy was used to examine the structural variations as a function of strain. DSC data allowed measurement of the melting temperatures and enthalpies of the material before and after deformation, providing information about the changes in the crystalline fraction. After the molecular vibrations were assigned to the corresponding vibrational modes, we investigated the energy and intensity variations of these vibrations at different deformations. A reorientation of the chains from perpendicular to parallel to the stress direction was observed to occur in the plastic region. During the deformation, a decrease in the degree of crystallinity of the material was observed, but the thickness of the lamellae did not change significantly. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/230 |
DOI: | 10.1081/MB-100106174 |
ISSN: | 0022-2348 |
Versão da editora: | https://www.tandfonline.com/doi/full/10.1081/MB-100106174 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDF - FCD - Artigos/Papers (with refereeing) IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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2001-32.pdf Acesso restrito! | 175,13 kB | Adobe PDF | Ver/Abrir |