摘要
利用γ射线共辐照技术在聚醚砜膜上接枝了甲基丙烯酸.通过改变溶剂、辐照剂量、辐照剂量率等条件,获得了具有不同接枝率的改性聚醚砜膜,提高接枝率有助于改善聚醚砜膜的亲水性.实验结果表明,提高单体浓度、使用混合溶剂(如水和乙醇按一定比例混合),有利于提高接枝率.研究还发现,超过2 kGy的辐照剂量会导致接枝率降低.
The grafting of methyacrylic acid onto poly （ether sulfone） membranes is realized by means of simultaneous irradiation in liquids. And the modified membranes with different grafting ratio are obtained by changing the conditions,such as solvent,irradiation dose,and irradiation dose rate. The increased grafting ratio is favorable for the improving of hydrophilicity of the membranes. Experimental results indicate that increasing monomer concentration,using mixed solvents（such as water and ethanol are mixed in certain proportion）are conducive to the increase of grafting degree. It is found that,while studying irradiation grafting copolymerization of methyl acrylic acid onto PES,the irradiation dose which exceeds 2 kGy results in reduction of grafting degree.
出处
《滨州学院学报》
2007年第6期49-53,共5页
Journal of Binzhou University
基金
国家自然科学基金项目(20776147)
关键词
辐射接枝
聚醚砜
溶剂
辐照剂量
辐照剂量率
irradiation grafting
poly（ether sulfone）
solvent
irradiation dose
irradiation dose rate
