Preparation of thermo-responsive superhydrophobic TiO2/poly(N-isopropylacrylamide) microspheres

被引：16
作者：
Chen, Hao [1 ]
Pan, Shuaijun [1 ]
Xiong, Yuzi [1 ]
Peng, Chang [1 ]
Pang, Xiangzhong [1 ]
Li, Ling [1 ]
Xiong, Yuanqin [1 ]
Xu, Weijian [1 ]
机构：
[1] Hunan Univ, Inst Polymer Sci & Technol, Coll Chem & Chem Engn, Changsha 410082, Hunan, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2012年 / 258卷 / 24期
基金：
美国国家科学基金会;
关键词：
Thermo-responsive; Superhydrophobic; Core-shell structure; HYBRID MICROSPHERES; SHELL; FABRICATION; SURFACES;
D O I：
10.1016/j.apsusc.2012.04.096
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Here we reported a facile method that combined sol-gel and surface-initiated atom transfer radical polymerization (ATRP) to prepare thermo-responsive superhydrophobic TiO2/poly(N-isopropylacrylamide) microspheres with core-shell structure. The surface coated with microspheres show hydrophilic properties (CA = 90.5 +/- 2.3 degrees) at 27 degrees C, it changes to superhydrophobicity (CA = 150.2 +/- 2.3 degrees) while the temperature rises up to 42 degrees C. This performance is attributed to lower critical solution temperature (LCST) phenomenon of Poly (N-isopropylacrylamide). Five cycle measurements of water droplet reversible switch between hydrophilicity and superhydrophobicity were demonstrated temperature-responsive surface property. The changes were rapid and significant. The as-prepared particles have been characterized by scanning electron microscopy, transmission electron microscopy, thermal gravimetric analysis, FT-IR analysis, and dynamic light scattering. Crown Copyright (c) 2012 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：9505 / 9509
页数：5
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