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Report No.
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Development of the safe and non-electric power type explosion prevention system with hydrogen storage materials, 3; Preparation and evaluation of hydrogen

Maekawa, Yasunari; Hasegawa, Shin; Sawada, Shinichi; Chen, J.; Hashimoto, Naoyuki*; Isobe, Shigehito*

For establishing a safe and non-electric power type explosion prevention system with hydrogen storage materials, hydrogen permselective membranes against oxygen and water vapor have been developed. Using a radiation-induced grafting method, 4-trimethoxysilylstyrene (STMS) and acrylic acid (AAc) monomers were introduced onto porous poly(vinylidene fluoride) (PVDF) films to obtain STMS- and AAc-grafted PVDF membranes with grafting degrees of 23 and 24%. The STMS- and AAc-grafted PVDF membranes showed permeabilities of hydrogen 8.1 and 12 time higher than those of water vapor. The above results indicated that radiation-grafting of porous films should be very effective method to obtain hydrogen permselective membranes.

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