收稿日期: 2011-01-11
修回日期: 2011-02-23
网络出版日期: 2011-05-06
基金资助
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)
Preparation and Characterization of Halloysite Nanotubes Grafted with Hyper-Branched PAMAM
Received date: 2011-01-11
Revised date: 2011-02-23
Online published: 2011-05-06
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)
张俊珩 邱清华 Yek Wei Yeat 王飞镝 贾志欣 郭宝春 贾德民 . 超支化PAMAM 接枝埃洛石纳米管的制备与表征[J]. 华南理工大学学报(自然科学版), 2011 , 39(6) : 65 -70 . DOI: 10.3969/j.issn.1000-565X.2011.06.012
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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