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Processing and charcterization of a novel nonporous Poly(vinylidene fluoride) f...
Sencadas, V.; Gregório Júnior, R.; Lanceros-Méndez, S.Poly(vinylidene fluoride) (PVDF) has remarkable properties leading to electro-optics, electro-mechanical and biomedical applications. In particular its piezo- and pyroelectric properties provide possibilities for many technological applications. The semicrystalline nature of PVDF, combined with the occurrence of at least four crystalline phases implies a complicated physical microstructure. The most frequently ...
α - to - β transformation on PVDF films obtained by uniaxial stretch
Sencadas, V.; Moreira, V.; Lanceros-Méndez, S.; Pouzada, A. S.; Gregório Júnior, R.The α to β phase transformation of PVDF through the stretching process at different temperatures was investigated. The optimum stretching conditions were studied and characterised by infrared spectroscopy and differential scanning calorimetry. The maximum β−phase content was achieved at 80ºC and a stretch ratio of 5. Accompanying the phase transformation, a orientation of the polymer chains and a packing of the...
Estudo por Microscopia de Força Atômica de Filmes Automontados e Curados.
MEDEIROS, E. S. de.; MARTINEZ, R. A.; BERNARDES FILHO, R.; GREGÓRIO JUNIOR, R.; MATTOSO, L. H. C.2005
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