Facile, Green, and Affordable Strategy for Engineering Chloroprene Rubber/Ionic Liquid Modified Graphene Oxide Nanocomposite for Dielectric Applications
M. G. Maya, Jiji Abraham, Jobin Job Mathen, C. Surej Rajan, Richard L. Thompson, Sabu Thomas, Soney C. GeorgeABSTRACT
Flexible dielectric composites comprising polychloroprene rubber (CR) and graphene oxide (GO) modified with an aliphatic quaternary ammonium ionic liquid were successfully synthesized via an eco‐friendly approach. The incorporation of merely 0.6 parts per 100 rubber (phr) of modified GO substantially enhanced the tensile strength to 14.62 MPa, representing a 32% improvement over neat CR. The composites exhibited a progressive increase in DC conductivity with increasing filler content, attributed to strong physical interactions between GO and the ionic liquid, particularly cation‐π interactions. The resulting nanocomposites demonstrated superior dielectric properties, with a dielectric constant of 32.6 and dielectric loss of approximately 0.33 at high frequencies. Furthermore, the composites displayed enhanced energy storage capacity that improved systematically with filler loading, owing to the formation of micro‐capacitor networks within the CR matrix. These findings indicate that the developed nanocomposites are promising candidates for dielectric layers in transistors and energy storage applications across diverse technological platforms.