Plasma-grafted anion-exchange membrane preparation and process analysis

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

8 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)218-226
Journal / PublicationElectrochimica Acta
Volume204
Online published19 Apr 2016
Publication statusPublished - 20 Jun 2016

Abstract

A green and simplified plasma grafting approach was adopted for anion exchange membranes (AEMs) synthesis based on polyvinyl chloride powders in three steps: plasma bombardment, grafting and alkalization, avoiding the use of toxic chloromethyl ether and quaternization reagents. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses demonstrate the successful grafting of benzyltrimethylammonium groups into the polyvinyl chloride matrix. The plasma-grafted AEM exhibits satisfactory thermal stability, chemical stability and ionic conductivity, suggesting potential application in fuel cell. The plasma bombardment efficiency reaches up to 50% based on the FTIR and XPS results, meaning that one in every three syndiotactic CH2-CHCl units is bombarded in the polyvinyl chloride matrix. But only a small part of plasma bombarded CH2-CHCl units are grafted with (vinylbenzyl)trimethylammonium chloride (VBTAC) monomer, indicating that the grafting efficiency is the performance limiting factor in the plasma-grafted AEM synthesis. We anticipate this finding will provide guidance of plasma grafting technique for AEM preparations.

Research Area(s)

  • Anion exchange membrane, Grafting efficiency, Plasma bombardment efficiency, Plasma-grafting, Vinylbenzyl trimethylammonium chloride

Citation Format(s)

Plasma-grafted anion-exchange membrane preparation and process analysis. / Zhang, Chengxu; Hu, Jue; Fan, Wenguang; Leung, Michael K.H.; Meng, Yuedong.

In: Electrochimica Acta, Vol. 204, 20.06.2016, p. 218-226.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review