摘要
膜污染是影响膜分离性能的重要因素,今采用非均相表面光接枝术在聚偏氟乙烯粉料表面引入亲水性物质丙烯酸甲酯,然后采用相转移的方法制备超滤膜。运用傅里叶转换红外光谱、X光电子能谱、接触角仪等对改性前后制备的聚偏氟乙烯膜表面性能和结构进行表征;结果表明丙烯酸甲酯成功接枝到聚偏氟乙烯粉料表面上,接枝改性后膜表面亲水性和抗污染性能均有明显改善。
Membrane fouling is one of the most important challenges affecting membrane ultrafiltration operations.In this study,poly（methyl acrylate）（PMA） was grafted onto poly（vinylidene fluoride）（PVDF） particles by heterogeneous photo-initiated graft copolymerization.The grafted PVDF-g-PMA membranes were prepared by the phase inversion method.The prepared PVDF-g-PMA membranes were characterized by using attenuated total reflection-Fourier transform infrared spectroscopy（ATR/FT-IR）,X-ray photoelectron spectroscopy（XPS） and water contact angle measuring implement.Results reveal that the methyl acrylate groups are present on the PVDF-g-PMA membranes,and the graft degree of methyl acrylate has remarkable effect on the performance of the membranes.Pure water contact angle on the membrane surface decreases with the increase of methyl acrylate graft degree,which indicates that the hydrophilicity of PVDF-g-PMA membranes is improved.The γ-globulin was used for the measurement of the protein adsorption to evaluate the antifouling property of the PVDF-g-PMA membranes,and the results show that,compared with PVDF,the antifouling property of PVDF-g-PMA membranes is enhanced evidently.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2010年第5期903-906,共4页
Journal of Chemical Engineering of Chinese Universities
基金
国家自然科学基金(20906044
20776148)
江西省科技攻关项目(2009AE00200)
关键词
紫外光辐射
聚丙烯酸甲酯
聚偏氟乙烯
耐污染
UV-induced grafting
poly（methyl acrylate）
poly（vinylidene fluoride）
antifouling
