α to β Phase Transformation and Microestructural Changes of PVDF Films Induced by Uniaxial Stretch
Top Cited Papers
- 8 May 2009
- journal article
- research article
- Published by Taylor & Francis Ltd in Journal of Macromolecular Science, Part B
- Vol. 48 (3), 514-525
- https://doi.org/10.1080/00222340902837527
Abstract
The phase transformation from α to β poly(vinylidene fluoride) (PVDF) through a stretching process at different temperatures was investigated. Samples of originally α-PVDF were stretched uniaxially at different temperatures at draw ratios from 1 to 5. The stretched samples were studied and characterized by infrared spectroscopy, scanning electron microscopy, and differential scanning calorimetry. The maximum β-phase content was achieved at 80°C and a stretch ratio of 5, but the samples still showed 20% of the original α-phase. Accompanying the phase transformation, an orientation of the polymer chains was observed. The stretching process also influenced the degree of crystallinity of the polymer. Poling of the samples also improves the α- to β-phase transformation.Keywords
This publication has 18 references indexed in Scilit:
- Processing and characterization of a novel nonporous poly(vinilidene fluoride) films in the β phaseJournal of Non-Crystalline Solids, 2006
- α- to β Transformation on PVDF Films Obtained by Uniaxial StretchMaterials Science Forum, 2006
- Analysis Method: FTIR studies of β-phase crystal formation in stretched PVDF filmsPolymer Testing, 2003
- Effect of annealing on the structure and properties of poly(vinylidene fluoride) β‐form filmsJournal of Polymer Science Part B: Polymer Physics, 2003
- Dielectric Behavior in an Oriented β-PVDF Film and Chain Reorientation Upon Transverse Mechanical DeformationFerroelectrics, 2002
- FTIR AND DSC STUDIES OF MECHANICALLY DEFORMED β-PVDF FILMSJournal of Macromolecular Science, Part B, 2001
- Effect of crystalline phase, orientation and temperature on the dielectric properties of poly (vinylidene fluoride) (PVDF)Journal of Materials Science, 1999
- Poled polymers for sensors and photonic applicationsJournal of Applied Physics, 1996
- Effect of crystallization temperature on the crystalline phase content and morphology of poly(vinylidene fluoride)Journal of Polymer Science Part B: Polymer Physics, 1994
- The II-I crystal transformation of poly(vinylidene fluoride) under tensile and compressional stressesPolymer, 1980