PVDF: PI nano composite films: mechanical, FT-IR, XRD, AFM and hydraulic study

In today's era of modern technology study of nano composite thin films are of immense importance. Unmodified PI, PVDF and PVDF incorporated PI thin films were prepared by spin coater unit using solution cast technique. PVDF was incorporated in variable lower concentrations in PI matrix at its precursor stage i.e. PAA. Thereafter, degree of crystallinity, crystalline nano particle size was evaluated using XRD and AFM technique. FT-IR was used to study the physical incorporation of PVDF particles within the PI matrix. Further, these results were used to study the microhardness, tensile and hydraulic behaviour. However, PVDF incorporated PI nano composite thin films contain overall better property in form of increased microhardness, tensile strength and less water absorption with improved morphology in comparison to unmodified film and 0.5 wt % nano composite film shows synergistic enhancement.