Ionomers
An ionomer is a polymer that comprises repeat units of both electrically neutral repeating units and a fraction of ionized units (usually no more than 15 percent). Ionomers have unique physical properties including electrical conductivity and isoviscosity -- increase in ionomer solution viscosity with increasing temperatures (see conducting polymer).
(Wikipedia, Ionomers, 12/10/2010)
Recent Journal Articles
Polyimide ionomer containing superacid groups
( 1305–1310)Polymers for Advanced Technologies 22 #8 (2011)
Saito et al of the University of Yamanashi, Japan, synthesized sulfonated polyimide (SPI) copolymer containing pendant perfluorosulfonic acid group. 2-(2,4-Diaminophenoxy)-1,1,2,2-tetrafluoroethanesulfonic acid was synthesized from 2,4-diaminophenol dihydrochloride via acetylation, perfluoroalkylation, and sulfonation. Polycondensation of 1,4,5,8-naphthalenetetracarboxylic dianhydride, monomer , and 3,5-bis(4-aminophenyl)-1H-1,2,4-triazole produced the polyimide (RDC 7/29/2011)