Abstract
PET material has excellent performance and its modification of biocompatibility had been concerned for researchers. In this paper, graft polymerization of acrylamide on PET fiber by co-irradiation was investigated, and then treated in 5% available chlorine content of NaClO solution, which make the amide groups on the PET fiber surface into amine groups, and provide the reactive groups for further functional modification. The results showed that the moisture absorption of PET fiber increases after the grafting of acrylamide, and its hygroscopicity increases with the increase of grafting yields; after the amide groups converted into the amine groups, the hygroscopicity of PET fibers decreases. The chemical structure and surface morphology of PET fiber and modified products were characterized by ATR-FTIR and SEM, which certified that acrylamide had been successfully grafted on PET fibers and the amide groups on its surface had been converted into the amine groups.
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