对氯甲基苯乙烯共聚物引发甲基丙烯酸甲酯原子转移自由基聚合  

Atom Transfer Radical Polymerization of Methyl Methacrylate Initiated by p-Chloromethylstyrene Copolymers

作　　者：胡春红[1] 张爱清[1] 

机构地区：[1]中南民族大学化学与材料科学学院催化材料科学湖北省重点实验室,湖北武汉430074

出　　处：《精细化工》2006年第3期298-301,共4页Fine Chemicals

基　　金：国家自然科学基金(50373052)~~

摘　　要：通过偶氮二异丁氰(AIBN)引发苯乙烯(St)与对氯甲基苯乙烯(p-CMS)共聚,合成了二元共聚物P(St-co-CMS),在氯化亚铜/四甲基乙二胺(CuC l/TMEDA)催化下,以此二元共聚物为大分子引发剂引发甲基丙烯酸甲酯(MMA)的原子转移自由基聚合(ATRP),成功地合成了结构明晰的以聚苯乙烯为主链、聚甲基丙烯酸甲酯为支链的接枝共聚物P(S-g-MMA)。大分子引发剂和接枝共聚物的结构通过红外光谱(IR)、核磁共振氢谱(1HNMR)得到了确认,并测定了接枝共聚物的平均支链数目、平均支链长度、接枝率及接枝效率。结果表明,用这种方法制备的接枝共聚物相对分子质量分布较窄,支链数目及长度可控,接枝效率高达93.7%。A well-defined graft copolymer of styrene synthesized by atom transfer radical polymerization with （ St ） and methyl methacrylate （ MMA ） was CuCI/TMEDA as catalyst and the copolymer of styrene and p-chloromethyl styrene（p-CMS） as macroinitiator,which was synthesized by copolymerization of St and p-CMS with AIBN as initiator. Structures of these copolymers,i, e. P（St-co-CMS） and P（S-g- MMA） ,were confirmed by means of IR and ^1HNMR after purification. The average graft number, the average showed of grafts length of side chains, the graft ratio and the graft efficiency were also investigated. The results that the relative molecule weight distribution of P（S-g-MMA） was narrow, the number and length can be controlled ,and the graft efficieney was as high as 93.7%.

关 键 词：原子转移自由基聚合 接枝共聚物 苯乙烯 对氯甲基苯乙烯 甲基丙烯酸甲酯 

分 类 号：O632.13[理学—高分子化学]