Synthesis of high molecular weight sulfonated poly(arylene ether sulfone) copolymer without azeotropic reaction

Title
Synthesis of high molecular weight sulfonated poly(arylene ether sulfone) copolymer without azeotropic reaction
Authors
이소영권연혜김보현채지언장종현헨켄스마이어디억유성종김진영김형준
Keywords
Azeotropic distillation; Electrolyte membranes; Proton exchange membrane fuel cells; Sulfonated poly(arylene ether sulfone)s; Dean-Stark apparatus
Issue Date
2015-07
Publisher
Solid state ionics
Citation
VOL 275, 92-96
Abstract
Currently, most sulfonated poly(arylene ether sulfone) (s-PAES) polymers are synthesized using a solvent mixture consisting of toluene and dimethylacetamide (DMAc) by two successive reactions, namely azeotropic water removal, followed by nucleophilic substitution. In this study, a novel method for the synthesis of s-PAES polymers has been developed, where alcohols such as methanol, ethanol, or 2-propanol are used along with DMAc as the co-solvent in the place of toluene that is used in the conventional synthesis of s-PAES. Moreover, the synthesis method used in this study involves only one step, namely the polymerization at 160 °C and does not require the azeotropic water distillation step at 140 °C. The new synthesis method was found to yield s-PAES polymerswith a highermolecularweight in a shorter reaction time compared to the conventional polymerization method. Further, membrane electrode assemblies (MEA) were fabricated using the synthesized s-PAES polymer membranes, in order to evaluate the performance of themembranes in polymer electrolyte membrane fuel cells (PEMFCs). The results indicate that the s-PAES membranes synthesized using the method proposed in this study have a great potential for use as PEMFC membranes.
URI
http://pubs.kist.re.kr/handle/201004/50428
ISSN
01672738
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE