高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (4): 774.

• 研究论文 • 上一篇    下一篇

乳液互穿网络型丙烯酸酯类热塑性弹性体的研究

董汉鹏, 李效玉   

  1. 北京化工大学可控化学反应科学与技术基础教育部重点实验室, 北京 100029
  • 收稿日期:2003-01-09 出版日期:2004-04-24 发布日期:2004-04-24
  • 通讯作者: 李效玉(1958年出生),男,教授,博士生导师,从事乳液聚合和功能高分子材料研究.E-mail:lixy@mail.buct.edu.cn E-mail:lixy@mail.buct.edu.cn
  • 基金资助:

    教育部博士学科点基金(批准号:1999001004);国家重点基础研究专项基金(批准号:G1999064809)资助

Studies on Acrylate Thermoplastic Elastomer with Latex Interpenetrating Polymer Network Structure

DONG Han-Peng, LI Xiao-Yu   

  1. Key Laboratory of Science and Technology of Controllable Chemical Reactions of Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2003-01-09 Online:2004-04-24 Published:2004-04-24

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被引次数

24

摘要： 以xPEA/xPSt和xPEA/xPSAN体系为例,考察多步种子乳液聚合法合成乳液互穿网络聚合物(LIPN)的合成条件,通过TEM观察了乳粒形态结构.xPEA在较低的交联度下,xPEA/xPSt(质量比75/25)和xPEA/xPSAN乳粒为一壳多核的反核壳结构,但是xPEA在较高的交联度下则生成核壳结构乳粒.DSC分析结果表明,在反核壳的乳粒中两种聚合物之间形成互穿网络(IPN)结构.考察了xPEA/xPSt体系LIPN型热塑性弹性体(TPE)的力学性能与互穿网络之间的关系及微相重组在材料力学性能中的作用.xPEA中TEGDA的质量分数为0.5%,xPSt中DVB的质量分数为0.15%时,材料性能最佳.

关键词: 多步种子乳液聚合, 乳液互穿网络聚合物, 反核壳结构, 热塑性弹性体

Abstract: The conditions of the multistage emulsion polymerization were investigated. The structure of the latex particles obtained under different polymerization conditions was observed by using TEM. An inverse core-shell structure was generated when 75% light crosslinked xPEA combines with 25% xPSt or xPSAN, whereas a pure core-shell structure was formed when xPEA was heavily crosslinked. DSC analysis showed that the two polymers formed IPN. The relationship between the mechanical properties and the interpenetrating networks was discussed based on the recombination model of the domains. The role of the recombination of the domains was investigated. The optimum values of TEGDA in the xPEA and DVB in the xPSt are 0.5% and 0.15%, respectively.

Key words: Multi-stage seed emulsion polymerization, Latex interpenetrating polymer networks(LIPN), Reverse core-shell structure, Thermoplastic elastomer(TPE)

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