Cylindrical PCL brushes on the surface of lanthanum hydroxide nanowires by ring-opening polymerization  

作　　者：ZHOU Mi YUAN JinYing YUAN WeiZhong HONG XiaoYin YIN YingWu 

机构地区：[1]Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China [2]State Key Laboratory of Rare Earth Materials Chemistry and Applications, Beijing 100871, China

出　　处：《Chinese Science Bulletin》2010年第14期1376-1381,共6页

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.50373020 and 20836004);National Basic Research Program of China (Grant No.2009CB930602)

摘　　要：A core-shell hybrid nanostructure,a hard core of single-crystalline lanthanum hydroxide nanowires and a soft shell of brushes of poly (ε-caprolactone) (PCL), has been successfully prepared by ring-opening polymerization (ROP) on the surface of nanowires. Such special structures were proved by TEM images. Meanwhile, the thickness of polymer layers was measured. The chemical component and the grafted PCL quantity of the sample were characterized by FTIR and TGA, which provides a simple and universal method to functionalize non-carbon nanowires. The modified lanthanum hydroxide nanowires can be well-dispersed in good solvents for PCL.A core-shell hybrid nanostructure, a hard core of single-crystalline lanthanum hydroxide nanowires and a soft shell of brushes of poly （e-caprolactone） （PCL）, has been successfully prepared by ring-opening polymerization （ROP） on the surface of nanowires. Such special structures were proved by TEM images. Meanwhile, the thickness of polymer layers was measured. The chemical component and the grafted PCL quantity of the sample were characterized by FTIR and TGA, which provides a simple and uni- versal method to functionalize non-carbon nanowires. The modified lanthanum hydroxide nanowires can be well-dispersed in good solvents for PCL.

关 键 词：氢氧化镧 开环聚合 纳米线 PCL 表面 透射电子显微镜 圆柱 纳米结构 

分 类 号：O631.3[理学—高分子化学]