温敏聚合物的辐射合成及其对水溶液中低浓Au^（3＋）的浓集研究  

γ-RADIATION SYNTHESIS OF TEMPERATURE SENSITIVE POLYMER polyNIPAAm AND APPLICATION IN CONCENTRATION OF Au￣(3+) IN DILUTE AQUEOUS SOLUTION

作　　者：伊敏[1] 张晓东[1] 李军[1] 马晓民 哈鸿飞[1] 

机构地区：[1]北京大学技术物理系

出　　处：《辐射研究与辐射工艺学报》1996年第4期206-214,共9页Journal of Radiation Research and Radiation Processing

基　　金：核工业总公司核科学基金

摘　　要：应用γ辐射聚合技术在Ｈ２Ｏ－ＴＨＦ混合溶液中合成了不同分子量范围的温敏聚合物，并进而将这种辐射合成扩展到应用低级醇类、酮类和含氯有机化合物作为溶剂，结果表明，这些合成都是成功的。用合成的聚合物对在水溶液中浓集低浓Ａｕ^（３＋），浓集效率可达９０％以上。还研究了溶液酸度（以ｐＨ为１～７最佳）、聚合物含量（１０％以上可达饱和浓集率）及波集温度（接近ＬＣＳＴ为好）对浓集的影响。A Water-soluble temperature sensitive polymer, polyNIPAAm, was synthesized by radiation technology in H2O-THF mixed solutions and further, in simple alcohols, ketones and Cl-containing organic compounds as the solvents. The results showed that all the synthesis was successful. Several polyNIPAAm with different molecular weight were obtained in this way. In addition, the concentration effects of Au2+ in dilute aqueous solutions was investigated by using polyNIPAAm obtained in this work. The concentration coefficient could come up to more than 90%. The effects of acidity and concentration coefficient in the solution were investigated. The optimum conditions were obtained.

关 键 词：温度敏感性 聚合物 金离子 辐射聚合 

分 类 号：O631.34[理学—高分子化学]