Carboxylic acid functionalized fluorinated sulfonated poly(arylene ether sulfone) copolymers with enhanced oxidative stability

Mukherjee R, Banerjee S, Komber H, Voit B (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Journal of Membrane Science Elsevier

Book Volume: 510

Pages Range: 497-509

DOI: 10.1016/j.memsci.2016.03.028

Abstract

Carboxylic acid functionalized TPQSH-COOH-XX copolymers were synthesized to investigate their proton exchange membrane properties. This new series of copolymers was prepared by copolymerization of a -COOH moiety containing diphenol monomer, 2-[bis-(4-hydroxy-phenyl)-methyl]-benzoic acid (TP-COOH), with two dihalide monomers, 4,4'-bis(4'-fluoro-3'-trifluoromethylbenzyl)biphenyl (QBF) and 3,3'-disodiumsulfonyl-4,4'-dichlorodiphenylsulfone (SDCDPS), in different mole ratios. The structure of the copolymers (TPQSH-COOH-XX) and of the homopolymer (TPQ-COOH) was analyzed by spectroscopic techniques. The copolymers TPQSH-COOH-XX with different percentage of -SO3H groups showed in TEM images a clear phase separated morphology with ionic clusters of sizes from 5 to 80 nm. All the -COOH functionalized ionomer membranes showed good mechanical properties with enhanced oxidative stability and high dimensional stability. The membranes exhibited high water uptake and swelling due to high IEC values (1.38-1.96 mequiv/g) and the presence of -COOH groups. The copolymers showed high proton conductivity (55-116 mS/cm at 80 °C and 56-112 mS/cm at 90 °C) under fully hydrated condition.

Involved external institutions

Indian Institute of Technology Bombay IN India (IN) Leibniz-Institut für Polymerforschung Dresden e. V. DE Germany (DE)

How to cite

APA:

Mukherjee, R., Banerjee, S., Komber, H., & Voit, B. (2016). Carboxylic acid functionalized fluorinated sulfonated poly(arylene ether sulfone) copolymers with enhanced oxidative stability. Journal of Membrane Science, 510, 497-509. https://doi.org/10.1016/j.memsci.2016.03.028

MLA:

Mukherjee, Rajdeep, et al. "Carboxylic acid functionalized fluorinated sulfonated poly(arylene ether sulfone) copolymers with enhanced oxidative stability." Journal of Membrane Science 510 (2016): 497-509.

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