Conductive polymer/insulating polymer composite films using molecular self-assembly

By exposing low-density polyethylene to an atmosphere of fluming sulfuric acid, sulfonated low-density polyethylenes (SPE) were prepared. The degree of surface sulfonation of the treated film was determined from the weight increase per unit area. Polypyrrole (PPy) films on the surface of SPE were grown by a molecular self-assembly process and the properties of PPy/SPE composite films have been investigated. Functional applications of PPy/SPE composite films have also been proposed.