纸质出版日期:2001-12-20
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分别使用苯乙烯-HCl加成物(a)和2-氯乙基乙烯基醚-HCl加成物(b)作为引发剂,TiCl4/Ti(OiPr)4(3∶1mol/mol)为活化剂 ,在nBu4NCl存在下 ,- 40℃、CH2Cl2 中 ,通过顺序活性阳离子聚合 ,合成了 β 蒎烯与苯乙烯、对甲基苯乙烯的嵌段共聚物.又用带丙烯酰氧功能基的引发剂c[CH3CH(OCH2CH2X)Cl,X =OCOC(CH3)CH2]引发 β 蒎烯活性阳离子聚合 ,合成了β 蒎烯大分子单体 .该大分子单体在AIBN引发下与甲基丙烯酸甲酯进行自由基共聚 ,获得主链为聚甲基丙烯酸甲酯、侧链为聚 β 蒎烯的接枝共聚物.
Block copolymers of β-pinene with styrene (St) and p-methylstyrene (pMeSt) were prepared by sequential living cationic polymerization initiated with HCl-adducts of styrene(a) and 2-chloroethyl vinyl ether(b) respectively,in the presence of TiCl4/Ti(OiPr)4(at 3:1 mole ratio) and nBu4NCl in CH2Cl2 at -40℃.β-pinene macromonomer with methacryloxy group at the α-end was also synthesized by the living cationic polymerization of β-pinene initiated with HCl adducts of vinyl ether (c,CH3CH- (OCH2CH2X)Cl,X=methacrylate).The macromonomer was copolymerized with methyl methacrylate(MMA) in the presence of AIBN in toluene at 60℃ to give graft eopolymers carrying poly(β-pinene)as graft chain.
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