Nanostructured Block Copolymer Systems for Use as Proton Exchange Membranes

Abstract

<p>Exploring alternative forms of energy that is both inexpensive and renewable is becoming a vital process required for maintaining a progressive society. Proton exchange membrane fuel cells (PEMFC) are one of the many promlsmg sources currently being explored for this movement. One of the key components in the fuel cell itself is the proton exchange membrane, PEM, that allows the conduction of ions (in this case protons) from the anode to the cathode while preventing the cross-flow of the fuel source (i.e. hydrogen, methanol, ethanol, etc.). This project has focused on comparing the structure-property relationships for two classes of multiblock copolymers. New PEMs, based on a series of sulfonated poly(arylene ether)s, sPAEs, that bear a pendant sulfonic acid group are compared to the much more common sPAEs that bear the sulfonic acid group attached directly to the backbone. The initial phase, and focus of this presentation, involved the preparation of low molecular weight model compounds and their characterization in terms of thermal stability and solubility characteristics. The long term goal of the project is to prepare the corresponding multiblock copolymers and evaluate their proton conductivity and hydrolytic stability.</p><p>This presentation occurred at the Wright State University Campus-Wide Celebration of Research, Scholarship and Creative Activities on April 16, 2010</p>