High temperature polyimide nanofoams

Abstract

A means of generating high temperature polymer foams which leads to pore size in the nanometer regime has been developed. Nanofoams were prepared by casting block copolymers comprised of a thermally stable block and a thermally labile material is dispersed. Microphase separated morphologies were observed for all copolymers, irrespective of the block lengths surveyed, by dynamic mechanical analysis.