Thermal analysis of disulfonated poly(arylene ether sulfone) plasticized with poly(ethylene glycol) for membrane formation

Hee Jeung Oh, Benny D. Freeman, James E. McGrath, Chang Hyun Lee, Donald R. Paul

Research output: Contribution to journalArticleResearchpeer-review

32 Citations (Scopus)


One route to melt processing of high glass transition temperature polyelectrolytes, such as disulfonated poly(arylene ether sulfone) (BPS), involves mixing a plasticizer with the polymer. In this study, poly(ethylene glycol) (PEG) was used as a plasticizer for BPS. BPS and PEG are miscible, and the effect of PEG molecular weight (in the range of 200-600 g/mol) and concentration on the Tg of BPS/PEG blends was investigated. As PEG molecular weight decreases and concentration increases, the blend Tg is depressed significantly. Based on isothermal holds in a rheometer at various temperatures and times, the PEG materials considered were thermally stable up to 220 C for 10 min in air or 250 C for at least 10 min under a nitrogen atmosphere, which is long enough to permit melt extrusion of such materials.

Original languageEnglish
Pages (from-to)235-247
Number of pages13
Issue number1
Publication statusPublished - 14 Jan 2014
Externally publishedYes


  • Melt processing
  • Poly(ethylene glycol)
  • Sulfonated polysulfone

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