高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

含氟/硅丙烯酸酯核壳型乳液的合成及性能

和玲, 徐岩, 朱江安, 梁军艳   

  1. 西安交通大学理学院应用化学系, 西安 710049
  • 收稿日期:2007-08-17 修回日期:1900-01-01 出版日期:2008-01-10 发布日期:2008-01-10
  • 通讯作者: 和玲

Synthesis and Properties of Core-shell Fluorosilicone-containing Acrylate Latexes

HE Ling, XU Yan, ZHU Jiang-Gan, LIANG Jun-Yan*   

  1. Department of Applied Chemistry, School of Science, Xi′an Jiaotong University, Xi′an 710049, China
  • Received:2007-08-17 Revised:1900-01-01 Online:2008-01-10 Published:2008-01-10
  • Contact: HE Ling

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被引次数

45

摘要： 采用半连续种子乳液聚合法, 在十二烷基硫酸钠(SDS)/辛基苯基聚氧乙烯醚(TX-10)复合乳化剂的作用下, 合成了以丙烯酸丁酯(BA)为核, 以甲基丙烯酸甲酯(MMA)、甲基丙烯酸十二氟庚酯(DFHMA)、3-(甲基丙烯酰氧)丙基三甲氧基硅烷(MPTMS)和甲基三甲氧基硅烷(MTMS)为壳的核壳型含氟/硅丙烯酸酯聚合物乳液. 利用FTIR, TEM, SEM-EDX和DSC等手段对乳液组成、乳胶粒子结构、膜表面及断面形态等进行了表征, 讨论了氟/硅含量对聚合物膜性能的影响. 结果表明, 核-壳粒子尺寸为20~30 nm, 乳液膜的性能与膜表面氟和硅的含量及相容性有较大的相关性, 当m(氟)∶m(硅单体)=3∶1时, 形成的膜均匀透明, 吸水率较低, 尺寸稳定性较好.

关键词: 半连续种子乳液聚合, 含氟/硅丙烯酸酯聚合物, 核壳结构, 膜性能

Abstract: The core-shell silicon-containing fluorinated acrylate latex was obtained via semi-continuous seed emulsion polymerization in which butyl acrylate(BA) served as the core, methyl methylacrylate(MMA), methyl dodecafluorinacrylate(DFHMA in commercial name), 3-methacryloxypropyltrimethoxysilane(MPTMS) and methyltrimethoxysilane(MTMS)(BA/MMA/DFHMA MPTMS/MTMS) served as the shell of copolymer. FTIR, SEM-EDX, and DSC were used not only to analyze the properties of the latexes and films, but also to investigate the effect of DFHMA and MPTMS/MTMS content on the latexes and films. TEM was employed for characterizing the morphology structure and the particle size of the core-shell latex. The results indicate that the copolymers presented uniform spherical core-shell partials with 20—30 nm in diameter, the content of F and Si element on the surface of films have a great effect on the characteristics of the films, and when m(DFHMA)/m(MPTMS+MTMS)=3/1, the film shows much more favorable characteristics both in latex and in film.

Key words: Semi-continuous seed emulsion polymerization, Fluorosilicone-containing polymer, Core-shell structure, Film characteristics

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