| Surface modification of nature rubber catheter film via graft copolymerization |
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| DOI： |
| Key Words: natural rubber latex；catheter；film；graft copolymerization modification；hydrophilicity；anti-coagulation |
| Author Name | Affiliation | | SUN Qin | Hainan University；Agricultural Product Processing Research Institute，Chinese Academy of Tropical Agriculture Science | | YU He-ping | Agricultural Product Processing Research Institute，Chinese Academy of Tropical Agriculture Science | | LU Guang | Agricultural Product Processing Research Institute，Chinese Academy of Tropical Agriculture Science | | ZENG Zong-qiang | Agricultural Product Processing Research Institute，Chinese Academy of Tropical Agriculture Science |
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| Abstract: |
| The surface of pre-vulcanized natural rubber latex(NRL) film of catheter was modified by argon plasma pretreatment and subsequent UV-inducing graft copolymerization with N-vinylpyrrolidone(NVP).Fourier transform infrared(FTIR)spectroscopy，scanning electron microscope(SEM)，water contact angle and platelet adhesion tests were carried out to investigate the effects of surface graft copolymerization of NVP on the morphology，hydrophilic and anti-coagulant properties of NRL film.The results showed that，the Ar-plasma pretreatment time of 2 min and UV irradiation time of 10 min were the proper condition for NVP graft copolymerization onto NRL film；the water contact angle of NRL film reduced from 102.5° to 58.6° and the numbers of adhered platelets decreased obviously after graft copolymerization of NVP，indicating the great improvement of hydrophilic and anti-coagulant characteristics of NRL film. |
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