TY - JOUR
T1 - Proton exchange membranes prepared by grafting of styrene/divinylbenzene into crosslinked PTFE membranes
AU - Li, Jingye
AU - Ichizuri, Shogo
AU - Asano, Saneto
AU - Mutou, Fumihiro
AU - Ikeda, Shigetoshi
AU - Iida, Minoru
AU - Miura, Takaharu
AU - Oshima, Akihiro
AU - Tabata, Yoneho
AU - Washio, Masakazu
N1 - Funding Information:
The authors acknowledge Prof. Y. Katsumura and Dr. C. Matsuura for various discussions. The development of the new PEM using RX–PTFE was supported by projects of “Research and Development of Polymer Electrolyte Fuel Cell” in the New Energy and Industrial Technology Development Organization (NEDO).
PY - 2005/7
Y1 - 2005/7
N2 - 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.
AB - 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.
KW - Crosslinked polytetrafluoroethylene
KW - Pre-irradiation induced graft polymerization
KW - Proton exchange membrane
KW - Styrene/divinylbenzene
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U2 - 10.1016/j.nimb.2005.03.281
DO - 10.1016/j.nimb.2005.03.281
M3 - Conference article
AN - SCOPUS:21644434535
SN - 0168-583X
VL - 236
SP - 333
EP - 337
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 1-4
T2 - Ionizing Radiation and Polymers Proceedings of the 6th International Symposium on Ionizing Radiation Polymers
Y2 - 25 September 2004 through 30 September 2004
ER -