Grafting of Monochlorotrifluoroethylene onto Polyethylene by Pre-irradiation Method |
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| Authors: | Yoneho Tabata Junichi Fujikawa Keichioshima |
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| Institution: | Department of Nuclear , Engineering University of Tokyo , Tokyo, Japan |
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| Abstract: | Radiation-induced grafting of monochlorotrifluoroethylene onto polyethylene was carried out by a pre-irradiation method. It was observed that the grafting proceeds rapidly at temperatures from -35 to 0°C in the liquid monomer phase. By measuring ESR spectra, it was found that the grafting can be initiated by allyl radicals trapped in polyethylene. An absorption band characteristic to the grafting site was found and the band was tentatively assigned to the stretching vibration of the C-F bond situated in the vicinity of the branching position (the initiating site). |
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