Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (1): 105-109.

• Materials Science & Technology • Previous Articles     Next Articles

Rheological Behavior of Polypropylene/Organic Montmorillonite Nanocomposite

Ding Chao  Jia De-min  He Hui  Guo Bao-chun  Li Hui yong  Yan Li   

  1. College of Materials Science and Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2005-02-18 Online:2006-01-25 Published:2006-01-25
  • Contact: 贾德民，教授，E—mail：psdmjia@scut．edu．cn E-mail:scutpolymer@163.com
  • About author:丁超(1975-)，男，博士生，主要从事聚合物纳米复合材料方面的研究
  • Supported by:

    国家自然科学基金资助项目(20304003)；广东省自然科学基金重点资助项目(020966)；广东省自然科学基金团队资助项目(39172)

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Abstract:

Polypropylene/organic montmorillonite (PP/OMMT) nanocomposite was prepared by using a solid-phase-grafted PP(TMPP)as the interfacial modifier,whose nanostructure was then observed using transmission electron microscopy(TEM).The influence of TMPP on the dynamic rheological behavior of the nanocomposite and the relationship between the rheological behavior and temperature were also investigated.The results show that the dynamic elastic modulus,loss modulus and complex viscosity of the nanocomposite are higher than those of PP,while the loss factor is lower,that the complex viscosity of the nanocomposites is more sensitive to temperature,and that the flow activation energy and the crystallization temperature increase respectively by 1 5%and 1 0 K as coin-pared with PP,which may contribute to the enhanced interfacial interaction between PP and OMMT resulting from the addition of TMPP.

Key words: polypropylene, orgamic montmorillonite, nanocomposite, rheological behavior