| 초록 |
Most researchers have followed the conventional polymerization method to prepare sulfonated poly(arylene ether) sulfones (SPAES), what is typically called Friedel-Craft polymerization method, for the application to polymer electrolyte membrane fuel cells. However it is very complicated and difficult to synthesize reproducible high molecular sulfonated polymers because its procedure needs an azotropic solvent such as toluene and cyclohexane to dehydrate produced water with a main solvent such as DMAc, DMF, and NMP for polymerization. Furthermore, very high temperatures are critically required to synthesize the polymers with Cl-ended monomers when NMP is used as a main solvent. In order to solve these drawbacks, we have developed a totally simplified and reproducible polymerization procedure without the azotropic solvents to synthesize SPAES. The polymers prepared by the new procedure was characterized and compared to conventionally prepared SPAES. |
