Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (12): 23-27.

• Materials Science & Technology • Previous Articles     Next Articles

Preparation and Properties of Comb-Branched Polyurethane/Polyisobornyl Acrylate Copolymerization Emulsion

Chen Yong-jun  Luo Yuan-fang  Deng Xiang-hua  Liu Fang  Jia De-min   

  1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2009-01-16 Revised:2009-02-16 Online:2009-12-25 Published:2009-12-25
  • Contact: 刘芳（1964-），男，教授，主要从事高分子材料的合成、制备与改性研究．E-mail：mcfliu@scut．edu．cn E-mail:yjchen@scut．edu．cn
  • About author:陈勇军（1977-），男，工程师，主要从事高分子材料的合成、制备与改性研究．
  • Supported by:

    广东省自然科学基金团队项目（0309172）

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Abstract:

:Comb-branched waterborne polyurethane/poly （ isobornyl acrylate ） （ CWPU/PIA ） copolymerization emulsion was prepared, with isobornyl acrylate （IBOA） as the monomer and with CWPU as the dispersant. Then, the effect of IBOA content on the properties of CWPU/PIA copolymerization emulsion was analyzed by means of FT-IR, TEM, particle size distribution and contact angle measurements. The results show that （ 1 ） the particles in CWPU/PIA copolymerization emulsion possess a core-shell structure with CWPU as the shell and with PIA as the core; （2） the particle size increases with the IBOA content; （3） at a IBOA content of less than 40%, the average particle size of CWPU/PIA copolymerization emulsion is below 150nm; （4） IBOA content has no obvious influence on the contact angle of CWPU/IBOA film, but it greatly affects the water absorptivity ; and （5） with the increase in IBOA content, the water absorptivity of the films decreases while the water resistance improves.

Key words: comb-branched polymer, waterborne polyurethane, isoboruyl acrylate, copolymerization emulsion, property