Paper Title:
Synthesis and Properties of Chemically Cross-Linked Poly(Vinyl Alcohol)/quaterized Hydroxyethylcellulose Ethoxylate (PVA/QHECE) as Novel Alkaline Anion-Exchange Membrane
  Abstract

A new type of chemically cross-linked polymer blend membranes consisting of poly(vinyl alcohol) (PVA) and quaterized hydroxyethylcellulose ethoxylate (QHECE) have been prepared and evaluated as OH--conducting polymer electrolytes. The OH--conductivity (s) of the membranes was investigated as a function of cross-linking time, blending composition and water uptake. Membrane swelling decreased with cross-linking time, accompanied by an improvement in mechanical properties and a small decrease in OH--conductivity due to the reduced water absorption. The OH--conductivities in the range of 2.7 ×10-4-1.52 ×10-3 S cm-1 were obtained at room temperature (19±2°C), depending on the polymer composition and the content of cross-linking agent. TG analysis showed that the membranes exhibited the thermal stability high up to 350°C when incorporating 75% QHECE. In addition, the membranes displayed a high alkaline stability without losing their integrity and OH--conductivity after conditioning in 6M KOH at 60°C for one week.

  Info
Periodical
Advanced Materials Research (Volumes 287-290)
Chapter
New Energy Materials
Edited by
Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li
Pages
1344-1347
DOI
10.4028/www.scientific.net/AMR.287-290.1344
Citation
L. L. Liu, L. Xu, J. Xie, L. Ding, J. L. Qiao, G. Li, "Synthesis and Properties of Chemically Cross-Linked Poly(Vinyl Alcohol)/quaterized Hydroxyethylcellulose Ethoxylate (PVA/QHECE) as Novel Alkaline Anion-Exchange Membrane", Advanced Materials Research, Vols. 287-290, pp. 1344-1347, 2011
Online since
July 2011
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Price
$32.00
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