Study on poly-electrolyte membrane of crosslinked PTFE by radiation-grafting

Kohei Sato, Shigetoshi Ikeda, Minoru Iida, Akihiro Oshima, Yoneho Tabata, Masakazu Washio

研究成果: Conference article

63 引用 (Scopus)

抜粋

Polymer electrolyte fuel cell membrane based on crosslinked polytetrafluoroethylene (PTFE) [RX-PTFE] has been processed by radiation-grafting with reactive styrene monomers by γ-rays under atmospheric circumstances, and the characteristic properties of the obtained membranes have been studied. The grafting yields of styrene monomer onto RX-PTFE, which have various crosslinking densities, were in the range of 5-100%. At the reaction period of 24 h, the grafting yields for RX-PTFE with low crosslinking density, which was reacted at 60 °C, achieved 94%. As a tendency, the lower grafting temperature gives higher grafting ratio of styrene onto RX-PTFE. Moreover, the yields of subsequent sulfonation for all samples were close to 100%. Mechanical properties were decreased with increasing grafting yields; especially the membrane with higher grafting yields was brittle. Ion exchange capacity of sulfonated RX-PTFE reached 1.1 meq/g while maintaining the mechanical properties.

元の言語English
ページ(範囲)424-428
ページ数5
ジャーナルNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
208
発行部数1-4
DOI
出版物ステータスPublished - 2003 8 1
イベントIonizing Radiation and Polymers - Sainte-Adele, QUE, Canada
継続期間: 2002 9 212002 9 26

    フィンガープリント

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

これを引用