α-氯乙酰氧基大分子引发剂的合成及其引发原子转移自由基聚合  

Synthesis of α- Chloroacetyl Oligomer as Macroinitiator for ATRP

作　　者：刘兵[1] 刘峰[1] 罗宁[1] 应圣康[1] 刘青[2] 

机构地区：[1]华东理工大学活性聚合研究室,上海200237 [2]中国北京燕山石化公司研究院,北京102549

出　　处：《高等学校化学学报》2000年第3期484-487,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金!(批准号 :2 96 340 10 -2 );上海教育发展基金!(批准号 :SG980 0 7);北京燕山石化公司研究院资助

摘　　要：通过阴离子聚合制备了 α-氯乙酰氧端基大分子引发剂 ,并用于引发 (甲基 )丙烯酸酯类单体进行“活性”/可控的原子转移自由基聚合 (ATRP) .结果表明 :酰化反应温度为 60℃、氯乙酰氯过量 5倍和反应 2 4h,酰化效率达到 99.8% .产物经红外和核磁共振表征 ,证明 α-氯乙酰氧端基的结构 .用此引发剂引发乙烯基单体进行 ATRP,合成了 PSt-b-PMA和 PSt-b-PBA嵌段共聚物 ,其结构通过 1 HChloroacetyl polystyrene macroinitiator was synthesized by anionic polymerization. The optimum conditions for the synthesis of chloroacetyl oligomer are as follows: acylating temperature is 60 ℃, acylating time is 24 h and chloroacetyl chloride is excess 5 fold for n butyl lithium. The structure of α chloroacetyl polystyrene macroinitiator was characterized by IR and 1H NMR. Block copolymer, such as PSt b PMA, PSt B PBA, was synthesized by ATRP with α chloroacetyl polystyrene oligomer as macroinitiator and the structure of PSt b PMA was characterized by 1H NMR.

关 键 词：阴离子聚合 大分子引发剂 α-氯乙酰氧剂 ATRP 

分 类 号：O631.5[理学—高分子化学] TQ316.32[理学—化学]