Hydrothermally prepared nano bricks of potassium sodium niobate for enhancing thermal and electrical properties of Poly(vinylidene fluoride)

Abstract

This study presents the hydrothermal fabrication of K0.5Na0.5NbO3 nano bricks at a very lower temperature and its emphasis on the various properties of the polymer matrix. Even a smaller amount of such a nanostructured ceramic phase leaves a great influence on the various properties of the polymer matrix. Interestingly just a 10 % loading of KNN (potassium sodium niobate) nano bricks in a polymer matrix alters the remanant polarization to 6.10 mu C cm -2 from 0.04 mu C cm -2 for PVDF Poly(vinylidene fluoride) and 7.3 mu C cm -2 at 20 % loading. The estimated dielectric at the frequency of 1 kHz shows more than 5 and 6 times increase at 10 % (er = 13) and 20 % (er = 15.4) of ceramic filler which is originally 2.5 for the pure PVDF matrix.