Linear low-density polyethylene(LLDPE)was melt and blended with styrene-maleic anhydride copolymer(SMA).The blending films were then immersed in poly(ethylene glycol)400(PEG400)at room temperature.The surface composit...Linear low-density polyethylene(LLDPE)was melt and blended with styrene-maleic anhydride copolymer(SMA).The blending films were then immersed in poly(ethylene glycol)400(PEG400)at room temperature.The surface composition of the blend films was determined by Fourier transform infra-red spectroscopy coupled with a variable incidence angle attenuated total reflection accessory(ATR-FTIR).Results show that PEG400 can be grafted onto the surface of the films via esterification with SMA.The immersion of PEG promotes the enrichment of SMA onto the surface of the films.The water contact angle data show that grafting of PEG400 onto PE can greatly improve the hydro-philicity of the PE surface.These experiments show that sur-face functionalization of polyethylene films by blending SMA and then surface grafting of PEG is feasible,which suggest an effective and simple route for PE surface modification via blending and grafting.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.50273048)Ministry of Education of China(Grant No.20050558001).
文摘Linear low-density polyethylene(LLDPE)was melt and blended with styrene-maleic anhydride copolymer(SMA).The blending films were then immersed in poly(ethylene glycol)400(PEG400)at room temperature.The surface composition of the blend films was determined by Fourier transform infra-red spectroscopy coupled with a variable incidence angle attenuated total reflection accessory(ATR-FTIR).Results show that PEG400 can be grafted onto the surface of the films via esterification with SMA.The immersion of PEG promotes the enrichment of SMA onto the surface of the films.The water contact angle data show that grafting of PEG400 onto PE can greatly improve the hydro-philicity of the PE surface.These experiments show that sur-face functionalization of polyethylene films by blending SMA and then surface grafting of PEG is feasible,which suggest an effective and simple route for PE surface modification via blending and grafting.
