Preparation of Composites of Hyperbranched Aromatic Poly(ethersulfone)s Possessing Sulfonic Acid Terminal Groups and Epoxy resin for Polymer Electrolyte

摘要

An AB-2 monmer 2,6-bis(p-sodum sulfophenoxy) benzonitrile 1 was synthesized from 2,6-dichlrobenzonitrile and p-sodium hydroxybenznen sulfonic acid The novel phyperbranced poly(ethesulfone) 2 was prepared from self-polycondensatin of hte AB_2 monomer using phosphorus pentoxide/methane sulfonic acid as the condensatin agent The obtained hyperbranched polymer has the sulfonic acid groups at the terminals existing in a large quantity The weight-average molecular weight(M_w) of the polymer was 27,000 This polymer was thermally stable until 275 deg C The composites 2 and epoxy resin were prepared and it was found that they had proton transfer mobililty The proton flux of epoxy resing had good thermal properties and were stable uo to 200 deg C.