【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 H NMR得到确证更多还原

【Abstract】 Chloroacetyl 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.更多还原