Phase separation and morphology control of polymer blend membranes of sulfonated and nonsulfonated polysulfones for direct methanol fuel cell application

Dong-Hwee Kim, Jisu Choi, Young Taik Hong, Sung Chul Kim

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Polymer blend membranes composed of a proton conducting component and a methanol barrier component were prepared for direct methanol fuel cells. Sulfonated poly(arylene ether sulfone) copolymer with 60 mol% sulfonation (sPAES-60) was synthesized via a poly-condensation reaction from 3,3′-disulfonated-4,4′-dichlorodiphenyl sulfone (SDCDPS), 4,4′-dichlorodiphenyl sulfone (DCDPS), and 4,4′-biphenol (BP) for the proton conducting component. Poly(ether) sulfone copolymer (RH-2000, Solvay) was used to compensate for the mechanical and chemical weakness of sPAES-60 and to reduce the methanol permeability. By varying the drying condition and the concentration of the casting solution (10, 15, 20 wt%), blend membranes having various phase separated morphologies were obtained. The morphology was characterized by SEM, EDAX, and AFM. In this paper, the effect of the drying conditions on the phase separation and morphology of the blend membranes was investigated.

Original languageEnglish
Pages (from-to)19-27
Number of pages9
JournalJournal of Membrane Science
Volume299
Issue number1-2
DOIs
Publication statusPublished - 2007 Aug 1
Externally publishedYes

Fingerprint

Sulfones
sulfones
Polysulfones
Direct methanol fuel cells (DMFC)
polymer blends
Polymer blends
Phase separation
fuel cells
Methanol
Polymers
methyl alcohol
membranes
Membranes
Ethers
Drying
Protons
Copolymers
Ether
drying
ethers

Keywords

  • Blend membrane
  • Co-continuous morphology
  • Direct methanol fuel cell (DMFC)
  • Drying condition
  • Phase separation

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Cite this

Phase separation and morphology control of polymer blend membranes of sulfonated and nonsulfonated polysulfones for direct methanol fuel cell application. / Kim, Dong-Hwee; Choi, Jisu; Hong, Young Taik; Kim, Sung Chul.

In: Journal of Membrane Science, Vol. 299, No. 1-2, 01.08.2007, p. 19-27.

Research output: Contribution to journalArticle

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