Ion-Track Grafting of Vinylbenzyl Chloride into Poly(ethylene-co-tetrafluoroethylene) Films Using Different Media

Nunung Nuryanthi; Tetsuya Yamaki; Akane Kitamura; Hiroshi Koshikawa; Kimio Yoshimura; Shin-ichi Sawada; Shin Hasegawa; Masaharu Asano; Yasunari Maekawa; Akihiro Suzuki; Takayuki Terai

doi:10.14723/tmrsj.40.359

Regular Papers

Ion-Track Grafting of Vinylbenzyl Chloride into Poly(ethylene-co-tetrafluoroethylene) Films Using Different Media

Nunung Nuryanthi, Tetsuya Yamaki, Akane Kitamura, Hiroshi Koshikawa, Kimio Yoshimura, Shin-ichi Sawada, Shin Hasegawa, Masaharu Asano, Yasunari Maekawa, Akihiro Suzuki, Takayuki Terai

Author information

Nunung Nuryanthi
Department of Nuclear Engineering and Management, The University of Tokyo
Quantum Beam Science Center, Japan Atomic Energy Agency (JAEA)
Tetsuya Yamaki
Quantum Beam Science Center, Japan Atomic Energy Agency (JAEA)
Akane Kitamura
Takasaki Advanced Radiation Research Institute, Japan Atomic Energy Agency (JAEA)
Hiroshi Koshikawa
Quantum Beam Science Center, Japan Atomic Energy Agency (JAEA)
Kimio Yoshimura
Quantum Beam Science Center, Japan Atomic Energy Agency (JAEA)
Shin-ichi Sawada
Quantum Beam Science Center, Japan Atomic Energy Agency (JAEA)
Shin Hasegawa
Quantum Beam Science Center, Japan Atomic Energy Agency (JAEA)
Masaharu Asano
Quantum Beam Science Center, Japan Atomic Energy Agency (JAEA)
Yasunari Maekawa
Quantum Beam Science Center, Japan Atomic Energy Agency (JAEA)
Akihiro Suzuki
Department of Nuclear Engineering and Management, The University of Tokyo
Takayuki Terai
Department of Nuclear Engineering and Management, The University of Tokyo

Keywords: polymer electrolyte fuel cells, OH^--conductive membranes, swift heavy ion, latent track, graft polymerization

JOURNAL FREE ACCESS

2015 Volume 40 Issue 4 Pages 359-362

DOI https://doi.org/10.14723/tmrsj.40.359

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Abstract

We investigated the ion-track grafting of vinylbenzyl chloride (VBC) into a poly(ethylene-co-tetrafluoroethylene) (ETFE) film using different grafting media for applications as anion exchange membranes for fuel cells. In an attempt to increase the grafting yield, we applied a poor solvent system as the grafting medium, i.e., a mixture of water and isopropyl alcohol (H₂O-iPrOH mixture). The optimum H₂O-iPrOH composition was identified by the kinetic parameters including the initial polymerization rate (r_p0), the radical recombination rate (γ) and the grafting efficiency (r_p0/γ). These parameters changed depending on the VBC-grafting/chain-transfer reaction competition for the radicals on ETFE and the Trommsdorff effect; the swelling of the grafting substrate gave an additional effect.

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