γ共辐射接枝丙烯酸改善聚醚砜粉体亲水性的研究  

Hydrophilicity improvement of polyethersulfone powders by grafting acrylic acid with γ-ray simultaneous irradiation method

作　　者：邓波[1] 侯铮迟[1] 张凤英[1] 谢雷东[1] 李晶[1] 杨海军[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800

出　　处：《辐射研究与辐射工艺学报》2005年第6期337-341,共5页Journal of Radiation Research and Radiation Processing

摘　　要：利用γ射线共照射技术在聚醚砜(Polyethersulfone,PES)粉体上接枝了丙烯酸。研究了丙烯酸单体体 积分数、接枝溶液pH值、吸收剂量、阻聚剂(Cu2+)浓度等对接枝率的影响规律。通过与称重法相结合,得 到了利用红外光谱对接枝率进行定量分析的工作曲线。研究结果表明,当吸收剂量为25 kGy、单体体积分数 为30％、阻聚剂用量为0．004mol/L时,可以获得最高的接枝率。接枝溶液中盐酸的添加有利于提高接枝率。 提高接枝率有助于改善PES的亲水性。Acrylic acid was grafted to Polyethersulfone （PES） powders by liquid-phase simultaneous irradiation. Effects of grafting conditions, such as absorbed dose, Volume fraction of monomer, inhibitor （Cu^2＋） concentration, and pH of the grafting solution on degree of the grafting were investigated. Combined with gravimetric analysis, a working curve of grafting degree through FT-IR quantitative analysis was obtained. The highest grafting degree was achieved at dose of 25 kGy, Volume fraction of monomer of 30 % and inhibitor concentration of 0.004 mol / L. Greater degrees of the grafting could be obtained by adding increasing amount of hydrochloric acid to the system. Hydrophilicity of the grafted PES powders increased with higher degrees of the grafting.

关 键 词：辐射接枝 亲水性 聚醚砜 丙烯酸 阻聚剂 

分 类 号：Q316.343[生物学—遗传学]