A PVDF grade typically used in off-shore applications was annealed at 70, 90 and 120°C. The samples were characterized and it was observed a small change in the crystallinity, but, on the other hand, the Elastic modulus of the sample annealed at 120°C increased from 1.52 to 1.85 GPa. The relaxations observed by Dynamic Mechanical Analysis (DMA) indicate that a morphological change took place at annealing process, which led to a stiffness rises of amorphous phase.

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