Linear low-density polyethylene(LLDPE) was melt blended with styrene-maleic anhydride copolymer(SMA).The blending films were then immersed in poly(ethylene glycol)400(PEG400) at room temperature.The surface compositio...Linear low-density polyethylene(LLDPE) was melt 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 an variable incidence angle attenuated total reflection accessory(ATR-FTIR).It has been found that PEG400 was grafted onto the surface of the films via esterification with SMA.PEG immersion promoted enrichment of SMA onto the surface of the films.The water contact angle data show that grafting of PEG400 can greatly improve the hydrophilicity of the PE surface.These experiments show that surface functionalization of polyethylene films by blending SMA and then surface grafting of PEG is a feasible process,which suggest a viable and simple route for PE surface modification via blending and grafting.展开更多
利用熔融法 ,采用马来酸酐接枝乙烯 -辛烯共聚弹性体 (POE g MAH)增韧聚对苯二甲酸乙二醇酯 (PET) ,研究了热处理对PET/POE g MAH共混体系增韧效果的影响。结合共混材料的室温缺口冲击断面SEM照片 ,淬断刻蚀照片和宏观力学性能 ,分析了...利用熔融法 ,采用马来酸酐接枝乙烯 -辛烯共聚弹性体 (POE g MAH)增韧聚对苯二甲酸乙二醇酯 (PET) ,研究了热处理对PET/POE g MAH共混体系增韧效果的影响。结合共混材料的室温缺口冲击断面SEM照片 ,淬断刻蚀照片和宏观力学性能 ,分析了共混体系发生脆韧转变对应的微观形貌特征。结果表明POE g MAH与PET具有良好的相容性 ,热处理不但可以使PET/POE g MAH共混体系的拉伸强度增大 ,而且可以显著提高其冲击强度。展开更多
文摘Linear low-density polyethylene(LLDPE) was melt 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 an variable incidence angle attenuated total reflection accessory(ATR-FTIR).It has been found that PEG400 was grafted onto the surface of the films via esterification with SMA.PEG immersion promoted enrichment of SMA onto the surface of the films.The water contact angle data show that grafting of PEG400 can greatly improve the hydrophilicity of the PE surface.These experiments show that surface functionalization of polyethylene films by blending SMA and then surface grafting of PEG is a feasible process,which suggest a viable and simple route for PE surface modification via blending and grafting.
文摘利用熔融法 ,采用马来酸酐接枝乙烯 -辛烯共聚弹性体 (POE g MAH)增韧聚对苯二甲酸乙二醇酯 (PET) ,研究了热处理对PET/POE g MAH共混体系增韧效果的影响。结合共混材料的室温缺口冲击断面SEM照片 ,淬断刻蚀照片和宏观力学性能 ,分析了共混体系发生脆韧转变对应的微观形貌特征。结果表明POE g MAH与PET具有良好的相容性 ,热处理不但可以使PET/POE g MAH共混体系的拉伸强度增大 ,而且可以显著提高其冲击强度。
