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DOI:
功能高分子学报:2009,(2):173-177
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聚苯乙烯-聚甲基丙烯酸缩水甘油酯嵌段共聚物的合成与表征
(华东理工大学材料科学与工程学院)
Synthesis and Characterization of Polystyrene-b-Poly(Glycidyl Methacrylate) Copolymer
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投稿时间:2008-12-05    
中文摘要: 在常压、惰性气体保护下,以正丁基锂引发苯乙烯进行阴离子聚合,并用少量甲基丙烯酸缩水甘油酯(GMA)进行终端共聚,制得了侧基含有环氧基团的聚苯乙烯 聚甲基丙烯酸缩水甘油酯嵌段共聚物。用GPC、FT-IR、1H-NMR及盐酸 二氧六环银量法对共聚物进行了分析,并考察了GMA用量、终端共聚的反应温度及时间对环氧侧基数量的影响。结果表明:在少量四氢呋喃和氯化锂的存在下,1, 1-二苯基乙烯(DPE)“盖帽”的聚苯乙烯阴离子活性种在甲苯溶剂中可引发GMA单体聚合反应,所得聚合物分子链中环氧侧基数量可根据需要进行调节。适宜的终端共聚反应温度和时间分别为-65 ℃和0.5 min。
Abstract:The living poly(styryl)lithium was synthesized by anionic polymerization under argon atmosphere. Polystyrene-b-poly(glycidyl methacrylate) copolymers were prepared by the copolymerization reaction of poly(styryl)lithium with glycidyl methacrylate (GMA),which were characterized with GPC, FT-IR, 1H-NMR and hydrochloric acid dioxane argentimetric method. Effects of GMA dosage, copolymerization duration and temperature on the number of side epoxy group were also studied. Results show that poly(styryl)lithium endcapped with 1,1-diphenylethylene (DPE) can initiate GMA in toluene in the presence of LiCl and a small amount of THF, and the number of side epoxy group can be adjusted. The optimal reaction temperature is -65 ℃ and the best termination time is 0.5 min.
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基金项目:国家自然科学基金(50390090)
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  jialete592@163.com 
   
   
   
  zan@ecust.edu.cn 
引用本文:
何晓燕,张健,黄辉,危大福,郑安呐.聚苯乙烯-聚甲基丙烯酸缩水甘油酯嵌段共聚物的合成与表征[J].功能高分子学报,2009,(2):173-177.
.Synthesis and Characterization of Polystyrene-b-Poly(Glycidyl Methacrylate) Copolymer[J].Journal of Functional Polymers,2009,(2):173-177.