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Indexed by:期刊论文

Date of Publication:2009-02-15

Journal:MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS

Included Journals:SCIE、EI

Volume:157

Issue:1-3

Page Number:1-5

ISSN No.:0921-5107

Key Words:Chloromethylation; Poly (phthalazione ether sulfone); Anion exchange membrane; Vanadiun redox battery

Abstract:Chloromethylated poly (phthalazione ether sulfone) (CMPPES) material was prepared with chloromethyl ether as chloromethylating regent and sulfuric acid as solvent. The effect of chloromethyl ether quantity on the chlorinity degree of chloromethylation (DCM) of CMPPES was investigated. DCM of CMPPES was in the range of 1.94-2.89 mmol/g. CMPPES were identified with (1)H NMR and TGA. Compared with PPES, the thermal stability of CMPPES decreases obviously. The CMPPES was dissolved in NMP (10wt%) and cast on glass to form a membrane. The final anion exchange membranes were prepared by soaking CMPPES in trimethylatine (33%) to aminate. Ion-exchange capacity (IEC), water content, dimensional stability and membrane area resistance of the anion exchange membranes were investigated. It was found that IEC of final anion exchange membrane was between 1.38 and 2.12 mmol/g, and water content of anion exchange membrane increased with an increase of IEC, however, dimensional stability and area resistance of membranes for 2 M VOSO(4) in 3 M H(2)SO(4) solution decreased. The area resistance was lower than Nafion112. (C) 2008 Elsevier B.V. All rights reserved.