α- to β Transformation on PVDF Films Obtained by Uniaxial Stretch
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 80°C and a stretch ratio of 5. Accompanying the phase transformation, a orientation of the polymer chains and a packing of the crystalline structure is observed. The stretch ratio does not significantly affect the degree of crystallinity.
Paula Maria Vilarinho
V. Sencadas et al., "α- to β Transformation on PVDF Films Obtained by Uniaxial Stretch", Materials Science Forum, Vols. 514-516, pp. 872-876, 2006