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高摩尔质量聚二甲基硅氧烷阳乳的合成

Synthetic Method for Cationic Silicone Emulsion with High Molecular Weight

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【作者】 张先亮黄德华张晓阳张先学钟文德

【Author】 Zhang Xianliang,Huang Dehua,Zhang Xiaoyang,Zhang Xianxue,Zhong Wende (College of Chemistry and Environmental Science,Wuhan University,Wuhan 430072)

【机构】 武汉大学化学与环境科学学院!武汉430072武大有机硅新材料股份有限公司!武汉430072长沙市凯门有机硅应用化学研究所!长沙410004

【摘要】 仅采用十二烷基二甲基苄基溴化铵作乳化剂 ,八甲基环四硅氧烷在碱催化下开环聚合 ,合成出稳定、高摩尔质量的聚二甲基硅氧烷阳乳。并发现八甲基环四硅氧烷开环乳液聚合过程不是在胶束表面进行 ,而是在胶束栅栏或胶束内进行 ;乳胶稳定性与形成溶致介晶态有关

【Abstract】 s:The emulsion polymerization of D 4 in the presence of dodecyldimethylbenzyl ammonium bromide and NaOH was studied.Stable cationic emulsion of polydimethylsiloxane with higher molecular weight was prepared by four procedures of polymerization.The ring opening polymerization of D 4 took place inside emulsion particle,however,the condensation reaction between OH ended polysiloxane of various molecular weight took place on the surface of emulsion particles.The stability of cationic silicone emulosion was related to lyotropic mesomorphism on the surface of emulsion particles.

  • 【文献出处】 有机硅材料 ,Silicone Material , 编辑部邮箱 ,2001年01期
  • 【分类号】TQ26
  • 【被引频次】20
  • 【下载频次】250
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