材料科学与技术

超支化PAMAM 接枝埃洛石纳米管的制备与表征

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  • 1.华南理工大学 材料科学与工程学院,广东 广州 510640; 2.广州西卡建筑材料有限公司,广东 广州 510530;3.广东工业大学 轻工化工学院,广东 广州 510090
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.

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

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  • 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
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.

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)

摘要

采用发散式合成法,通过重复以氨基为端基的整代产物与丙烯酸甲酯进行的Michael加成反应和以酯基为端基的半代产物与乙二胺进行的酰胺化反应两个步骤,得到一系列接枝不同代数超支化聚酰胺- 胺( PAMAM) 分子的改性埃洛石纳米管( HNTs) .利用傅里叶变换红外光谱、X 射线光电子能谱、X 射线衍射、热重分析和透射电镜对产物进行了表征.结果表明: HNTs 表面成功接枝了超支化PAMAM,但由于空间位阻的影响,实际接枝率明显小于理论值,第3. 0 代超支化PAMAM 接枝改性HNTs 的接枝率达到27. 21%; HNTs 表面接枝的超支化大分子没有改变埃洛石纳米管的结晶结构.

本文引用格式

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

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.

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