Chang, Elizabeth Chi-En. The effect of graphene nanoflake reinforcement on the mechanical and electrical properties of polyvinylidene fluoride. Retrieved from https://doi.org/doi:10.7282/t3-rphy-cn24
DescriptionPolyvinylidene fluoride (PVDF) is a semicrystalline thermoplastic polymer that is unique because it is electrically active, a property not common in polymers. PVDF is used in many industries due to its good mechanical properties, resistance to chemicals, and most importantly, piezoelectric properties. PVDF has been used as the matrix for many composites with both inorganic and organic fillers. This study involves uniform, high-shear melt-mixing graphite within PVDF to exfoliate graphite into graphene nanoflakes (GNFs) within the PVDF matrix in the concentrations of 0, 5, 10, 20, and 30 wt. %. These GNF-PVDF composite samples were characterized using scanning electron microscopy (SEM), differential scanning calorimetry (DSC), Fourier-transform infrared spectroscopy (FTIR), mechanical testing (tensile and nanoindentation), and electrical conductivity testing. Results indicate enhancements in both mechanical and electrical properties due to the addition and subsequent exfoliation of graphite into GNFs directly within PVDF.