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Dynamic mechanical analysis and creep behaviour of ß-PVDF films

In this work, tensile dynamic mechanical analysis (DMA) was used to characterise the solid-state rheological properties of a commercial ß-polyvinylidene fluoride (PVDF) film in the two main directions (longitudinal and transversal to the stretch direction). The ß-relaxation, assigned to the segmental motions within the amorphous phase, is observed at∼−25 ◦C. The alpha-c-relaxation is observed above room tempera...