Materials science forum · 2006 · 126 citations · 5 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials CharacterizationPhase TransformationsPolymer MaterialsPolymer CharacterizationPolymer CrystallinityPolymer Phase BehaviorPolymer PhysicsPolymer StructurePolymer Thin FilmsChainsCrystalline StructureDifferential CalorimetryInfrared Absorption SpectroscopyPhase Transformation AnalysisPolymer StretchingStretch TechniqueStretching-induced Phase Separation
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.
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