砂芯过滤法脱除原子转移自由基聚合体系中的铜离子

Removing copper ion with sand-core filtration method in atom transfer radical polymerization system

采用原子转移自由基聚合(ATRP)法合成聚甲基丙烯酸甲酯(PMMA),以砂芯过滤法脱除体系中的铜离子。电感耦合等离子体(ICP)等测量结果显示,与传统的溶解沉淀法、中性氧化铝柱法、EDTA络合萃取法相比,采用砂芯过滤法除铜率和回收率均较高,且工艺过程简单,溶剂消耗量少,值得ATRP工业化生产借鉴。

Synthesis of polymethyl methacrylate by ATRP. A new way for copper ion removing was studied with sand-core filter. Several methods of copper ion removing method were compared and copper ion con- centration was determined by inductively coupled plasma emission spectrometry （ICP）. The results showed that the copper removing method of sand-core filtration has many advantages of simple process, low cost, high yield and low copper ion concentration by comparison with dissolution and precipitation method, neutral alumina column purification and EDTA complexing extraction method.