Proton exchange membranes prepared by grafting of styrene/divinylbenzene into crosslinked PTFE membranes

Jingye Li, Shogo Ichizuri, Saneto Asano, Fumihiro Mutou, Shigetoshi Ikeda, Minoru Iida, Takaharu Miura, Akihiro Oshima, Yoneho Tabata, Masakazu Washio

Research output: Contribution to journalConference articlepeer-review

22 Citations (Scopus)

Abstract

Thin PTFE membranes were prepared by coating the PTFE dispersion onto the aluminum films. Thus the thin crosslinked PTFE (RX-PTFE) membranes were obtained by means of electron beam irradiation above the melting temperature of PTFE under oxygen-free atmosphere. The RX-PTFE membranes were pre-irradiated and grafted by styrene with or without divinylbenzene (DVB) in liquid phase. The existence of DVB accelerated the initial grafting rate. The styrene grafted RX-PTFE membranes are white colored, on the other hand, the styrene/DVB grafted RX-PTFE membranes are colorless. The proton exchange membranes (PEMs) were obtained by sulfonating the grafted membranes using chlorosulfonic acid. The ion exchange capacity (IEC) values of the PEMs ranging from 1.5 to 2.8 meq/g were obtained. The PEMs made from the styrene/DVB grafted membranes showed higher chemical stability than those of the styrene grafted membranes under oxidative circumstance.

Original languageEnglish
Pages (from-to)333-337
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume236
Issue number1-4
DOIs
Publication statusPublished - 2005 Jul 1
EventIonizing Radiation and Polymers Proceedings of the 6th International Symposium on Ionizing Radiation Polymers -
Duration: 2004 Sep 252004 Sep 30

Keywords

  • Crosslinked polytetrafluoroethylene
  • Pre-irradiation induced graft polymerization
  • Proton exchange membrane
  • Styrene/divinylbenzene

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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