端氨基超支化聚合物接枝纳米TiO_2复合材料的制备与表征  

Preparation and Characterization of Composites of Nanosized TiO_2 Grafted by Amino-terminal Hyperbranched Polymers

作　　者：亓学奎[1] 王欣欣[1] 曲晶明 杨华[1] 范文浩[1] 邹涛[1] 

机构地区：[1]北京市理化分析测试中心,北京100089

出　　处：《材料导报（纳米与新材料专辑）》2015年第2期5-8,共4页

基　　金：国家自然科学基金(21207007);北京市科学技术研究院萌芽计划(20140426)

摘　　要：以丙烯酸甲酯(MA)和二乙烯三胺(DTA)为原料,通过麦克尔(Michael)加成生成AB2型单体。对纳米TiO_2做适当表面预处理,以改性纳米TiO_2为中心核,与合成所得的AB2型单体发生缩聚反应,在纳米TiO_2表面接枝超支化聚酰胺胺(HPAMAM)。红外光谱(FT-IR)、热失重(TGA)和透射电镜(TEM)的测试结果表明HPAMAM成功接枝到纳米TiO_2表面。沉降实验和紫外可见光分析结果表明,接枝了HPAMAM的纳米TiO_2在氯仿溶剂中有很好的分散稳定性。AB2 monomer was synthesized by the Michael addition of methyl acrylate （MA） and diethylene triamine （DTA）. Nano-TiO2 was grafted with hyperbranched polyamidoamine （HPAMAM） through one-spot polycondensation between AB2 monomer and the surface treated nano-TiO2. The modified nano-TiO2 was characterized by FTIR, TG and TEM. The results indicated that HPAMAM was successfully grafted onto the surface of nano-TiO2. The results of sedimentation experiment and UV-Vis analysis showed that nano-TiO2 grafted with HPAMAM has better dispersion in the chloroform solvents than that unmodified.

关 键 词：超支化聚酰胺胺 纳米TIO2 复合材料 表面改性 分散稳定性 

分 类 号：TB332[一般工业技术—材料科学与工程]