Journal of South China University of Technology (Natural Science Edition) ›› 2008, Vol. 36 ›› Issue (3): 37-40.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Influence of Feeding Mode on Particle Size of Acrylate Micro-Latex

Wu Yue-huan  Liu Shu-mei  Zhao Jian-qing    

  1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2007-01-24 Revised:2007-04-21 Online:2008-03-25 Published:2008-03-25
  • Contact: 赵建青，教授，博士生导师， E-mail:psjqzhao@scut．edu．cn
  • About author:吴跃焕（1968-），女，博士后，副教授，主要从事乳液聚合的研究．E-mail：wuyuehuan123@126．com
  • Supported by:

    山西省自然科学基金资助项目（2007011035）;山西省科技攻关项目（051150）;广州市科技攻关项目（2005Z3-D0331）

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Abstract:

Acrylate micro-latex containing 1.5% （mass fraction, below the same） emulsifier and 50% polymer with a particle size of 35.6nm and a polydispersity index of 0. 133 was prepared by means of seed emulsion poly- merization. The particle size and its distribution of the micro-latex affected by the feeding modes of the monomer, the emulsifier and the initiator were then investigated. The results indicate that the dropwise addition may result in a large quantity of micelles, a high nucleation rate and a small particle size, and that the particle size decreases with the content increment of the emulsifier and the initiator pre-added before the polymerization.

Key words: acrylate micro-latex, latex particle size, feeding mode