三元单体可控接枝聚氯乙烯纤维吸附剂的吸铀性能  

Synthesis of Ternary Monome Copolymerized Polyvinyl Chloride Fiber Adsorbent and Its Adsorption Performance to Uranium

作　　者：刘德建 匙芳廷[1] 梁丹 吴昊岩 苟涵 阴金玉 文君[2] 熊洁[2] 胡胜[2] Dejian Liu;Fangting Chi;Dan Liang;Haoyan Wu;Han Gou;Jinyu Yin;Jun Wen;Jie Xiong;Sheng Hu(Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory , Southwest University of Science and Technology , Mianyang 621010 , China;China Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]西南科技大学核废物与环境安全国防重点学科实验室,四川绵阳621010 [2]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《高分子材料科学与工程》2019年第1期89-95,共7页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21876140);四川省教育厅项目(16ZB0134);西南科技大学精准资助专项(jz-081);西南科技大学创新基金项目(cx17-017);西南科技大学精准资助专项(jz18-022)

摘　　要：以聚氯乙烯(PVC)为基材,利用电子转移活化再生原子转移自由基聚合法(ARGET-ATRP)在PVC上引入丙烯腈(AN)、甲基丙烯酸甲酯(MMA)和二乙烯基苯(DVB),合成了具有高强度、高接枝率(1052%)的PVC-AO-MMA-DVB三元共聚吸附剂。并探究了PVC-AO-MMA-DVB三元共聚吸附剂在不同固液比、不同p H、不同温度等实验条件下对铀酰离子U(Ⅵ)的吸附性能。结果表明,在固液比为1/2时,吸附量达到最高;偕胺肟吸附剂吸附铀酰离子的最佳p H范围为5. 0～5. 5;由动力学分析,PVC-AO-MMA-DVB三元共聚吸附剂吸附铀酰离子过程伴随着物理吸附和化学吸附,化学吸附占优。Using polyvinyl chloride (PVC) as base material, acrylonitrile(AN), methylmethacrylate(MMA) and divinylbenzene (DVB) were grafted onto the PVC substrate by electron transfer activated regeneration atom transfer radical polymerization (ARGET-ATRP),PVC-AO-MMA-DVB terpolymer adsorbent with high strength and high grafting rate (1052%) was synthesized. The adsorption performance to uranium of the PVC-AO-MMA-DVB terpolymer adsorbent was investigated by experimentally studying at different solid-liquid ratios ,pH and temperature. The results show that when the solid-liquid ratio is 1/2, the adsorption amount reaches the highest;the optimum pH of amidoxime adsorbent to adsorb uranyl ions is 5. 0~5. 5;from the kinetic analysis,the process of adsorption of uranyl ions by PVC-AO-MMA-DVB is accompanied by physical and chemical adsorption,the effect of chemical adsorption is more superior.

关 键 词：电子转移活化再生原子转移自由基聚合 接枝率 偕胺肟 铀酰 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]