| 초록 |
Polyvinylpyrrolidone (PVP) is a synthetic water-soluble polymer that is widely used as a binder and an adhesive in many industrial applications. In this work, we present how to form a thin layer of PVP on the surface of polymer microfibers and initiate cross-linking reaction for the coated film through electron beam irradiation. Since polypropylene (PP) and polyethylene terephthalate (PET) microfibers used here showed hydrophobic properties on the surface, they were first subjected to plasma treatment under the O2 and N2 gas based atmospheric pressure plasma process. The plasma treated PP, PET microfibers with hydrophilic surfaces were immersed in PVP aqueous solution of 1wt%, 2wt%, 3wt% concentration for 10 minutes, dried for one day, and irradiated by electron beam at 25KGy dose to convert PVP coated layer into a cross-linked hydrogel. We have successfully fabricated PVP hydrogel-coated microfibers, and their chemical and adhesive properties were analyzed by SEM, microscope, FT-IR. |
