稳定自由基存在下苯乙烯聚合的加速剂  

Some New Rate-Accelerating Additives for Nitroxide-Mediated Living Free Radical Polymerization of Styrene

作　　者：林建[1] 李万利[1] 颜明发[1] 庄荣传[1] 邹友思[1] 

机构地区：[1]厦门大学材料科学系,福建厦门361005

出　　处：《合成化学》2001年第3期190-191,共2页Chinese Journal of Synthetic Chemistry

摘　　要：研究了稳定自由基存在下苯乙烯的活性聚合。发现在 β-酮酸酯 -乙酰乙酸乙酯 ,乙二酸二乙酯 ,1 ,3 -二酮 -乙酰丙酮的少量存在下 ,苯乙烯聚合速率显著增加 ,分子量可控 ,分子量分布较窄。而乙酰丙酮较大量存在下 。Controlled polystyrenes were synthesized starting from benzoyl peroxide and TEMPO(2,2,6,6 tetramethylpiperidinyl 1 oxy) . It was found that nitroxide mediated living free radical polymerization of styrene was distinctly accelerated by the addition of small amounts of a 1,3 diketone, acetylacetone and a β keto ester, acetoacetic ester or diethyl malonate, while larger amounts of acetylacetone resulted in slight increases in polydispersity.

关 键 词：稳定自由基 活性自由基聚合 加速剂 苯乙烯 聚苯乙烯 

分 类 号：O632.13[理学—高分子化学] O631.5[理学—化学]