Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (6): 65-70.doi: 10.3969/j.issn.1000-565X.2011.06.012

• Materials Science & Technology • Previous Articles     Next Articles

Preparation and Characterization of Halloysite Nanotubes Grafted with Hyper-Branched PAMAM

Zhang Jun-heng1  Qiu Qing-hua2  Wei Yeat Yek2   Wang Fei-di3  Jia Zhi-xin1  Guo Bao-chun1  Jia De-min1   

  1. 1. School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;2. Sika Guangzhou Ltd.,Guangzhou 510530,Guangdong,China; 3. Faculty of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510090,Guangdong,China
  • Received:2011-01-11 Revised:2011-02-23 Online:2011-06-25 Published:2011-05-06
  • Contact: 贾志欣(1980-) ，男，博士，副研究员，主要从事高分子材料制备、结构与性能研究． E-mail: jzhixin@163． com E-mail:zhangjunheng2002@126.com
  • About author:张俊珩(1982-) ，男，博士生，主要从事高分子材料的合成与改性研究．
  • Supported by:

    国家自然科学基金资助项目( 51003031) ; 广州开发区科技发展基金资助项目( 2008Q-P120)

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Abstract:

A series of modified halloysite nanotubes ( m-HNTs) with different generations of hyper-branched polyamidoamine ( PAMAM) were prepared via a divergent synthesis process by repeating the Michael addition of methyl acrylate ( MA) to superficial amino groups and the amidation of the resulting esters with ethylenediamine ( EDA) . The products were then characterized by means of FT-IR,XPS,XRD,TGA and TEM. The results show that ( 1)
hyper-branched PAMAM polymers are successfully grafted on the surface of HNTs,but the actual grafting rate is much less than the theoretical one due to the existing steric hindrance; ( 2) the grafting rate reaches 27. 21% after a 3. 0-generation grafting; and ( 3) the grafted hyper-branched PAMAM has no effect on the crystalline structure of HNTs.

Key words: halloysite nanotube, hyper-branched polyamidoamine, modification, grafting

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