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原子转移自由基聚合体系催化剂的脱除与2,2’-联二吡啶的回收
Removal of Catalysts and Reclamation of 2,2’-Bipyridine from Atom Transfer Radical Polymerization System
【摘要】 通过原位吸附法 ,首次将用于原子转移自由基聚合的含Cu催化剂从聚合物体系中除去 ,聚合物中Cu的质量分数最低可达 4× 10 - 7,聚合物的收率在 90 %以上。从原位吸附法得到的滤饼中 ,首次将用于原子转移自由基聚合的Cu原子的配位剂 2 ,2’ -联二吡啶通过解吸附和解配位反应获得其水溶液 ,以乙醚作萃取剂从水中萃取 2 ,2’ -联二吡啶 ,其收率最高可达 90 %以上。
【Abstract】 The Cu complex catalyst employed in atom transfer radical polymerization was removed in situ from the polymer with adsorbent such as acid clay.The Cu content in the polymer can be as low as 4×10 -7 with a polymer yield of over 90%.From the filter cake received from the in situ adsorption process a water solution of the complexing agent 2,2’-bipyridine was obtained by desorption and decomplexing reaction from which 2,2’-bipyridine was extracted with ether,with a maximun yield of over 90%. [
【Key words】 atom transfer radical polymerization; free radical living polymerization; metal complexing catalyst; removal; polymer treatment; adsorbent; 2,2’-bipyridine;
- 【文献出处】 石油化工 ,PETROCHEMICAL TECHNOLOGY , 编辑部邮箱 ,2000年08期
- 【分类号】TQ426
- 【被引频次】16
- 【下载频次】229