High Dielectric Constant (Microwave Frequencies) Polymer Composites

Abstract

Dielectric constants of polymer/salt molecular composites prepared using poly(2-vinylpyridine)/poly(ethyleneoxide) and/or methoxypolyethyleneglycol or tetraethyleneglycol/LiClO4 were determined at microwave frequencies. Change of dielectric constants of composites with varying voltages was studied to determine their possible feasibility as tunable materials. Effect of chain length, functional groups, salt content and Tg on the dielectric constant were determined. Modeling studies at different frequencies were done to evaluate their microwave reflection/attenuation properties.