Preparation of thermo-responsive superhydrophobic TiO2/poly(N-isopropylacrylamide) microspheres
Hao Chen, Shuaijun Pan, Yuzi Xiong, Chang Peng, Xiangzhong Pang, Ling Li, Yuanqin Xiong, Weijian Xu
APPLIED SURFACE SCIENCE | ELSEVIER | Published : 2012
Here we reported a facile method that combined sol-gel and surface-initiated atom transfer radical polymerization (ATRP) to prepare thermo-responsive superhydrophobic TiO 2 /poly(N-isopropylacrylamide) microspheres with core-shell structure. The surface coated with microspheres show hydrophilic properties (CA = 90.5 ± 2.3°) at 27°C, it changes to superhydrophobicity (CA = 150.2 ± 2.3°) while the temperature rises up to 42°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 sur..View full abstract
Awarded by National Science Foundation of China
We are grateful to Mr. Encai Ou, Miss. Yanyan Xie, and Mr. Yi Li for their kind help in preparing the manuscript. We would like to acknowledge funding from the National Science Foundation of China (J0830415).