We herein report the preparation and properties of the first polymer blend using pyrene functionalized polyaniline (pf-PANI). The pf-PANI has been synthesized and its blend has been prepared with the copolymer of vinylidene fluoride and hexafluoropropylene P(VDF-HFP). The FTIR results reveal intermolecular interaction between the polar amide group of pf-PANI and the polarized CH 2 group of P(VDF-HFP). The crystalline phase of PVDF of the copolymer revealed a transformation from a to b crystalline form after blending with pf-PANI, as found from FTIR and XRD measurements. The calorimetric measurements together with DMA results revealed the blend is partially miscible. The SEM measurements showed that the pf-PANI has been dispersed uniformly in the P(VDF-HFP) matrix. The solution photoluminescence spectrum of the pf-PANI exhibited emission in the purple-blue region and is slightly red shifted for the blend. The possible applications of this flexible fluorescent pf-PANI/P(VDF-HFP) has been suggested.

Herein, we present the dielectric and electrical conductivity properties of the partially miscible polymer blend prepared using pyrene functionalized polyaniline (pf-PANI) and poly(vinylidene fluoride-co-hexafluoro propylene) (PVDF-co-HFP). The blend mostly retains the fluorescent nature of pf-PANI as well as can be moldable and possesses good damping property. The dielectric properties have been investigated as a function of temperature at three different frequencies and the plausible origin of polarization responsible for dielectric behavior in this blend has been identified. The experimental results of dielectric measurements are compared with theoretical models and discussed. The surface morphology of the samples has been examined with a scanning electron microscope. The electrical conductivity has also been studied as a function of temperature and explained in terms of hopping of charge carriers/interconnected networks. The combined dielectric and conductivity results together with scanning electron microscope micrographs, reveal that there is hindrance to achieve percolation threshold even after pf-PANI addition of 57 vol % and subsequent thermal treatment.