Fine control of the Wettability transition temperature of colloidal-crystal films: From superhydrophilic to superhydrophobic

被引：113
作者：
Wang, Jingxia [1 ]
Wen, Yongqiang
Hu, Junping
Song, Yanlin
Jiang, Lei
机构：
[1] Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing 100080, Peoples R China
[2] Natl Ctr Nanosci & Nanotechnol, Beijing 100080, Peoples R China
来源：
ADVANCED FUNCTIONAL MATERIALS | 2007年 / 17卷 / 02期
关键词：
D O I：
10.1002/adfm.200600101
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A facile strategy for finely controlling the wettability transition temperature of colloidal-crystal films from superhydrophilic (water contact angle, CA, 0 degrees) to superhydrophobic (water CA, 150.5 degrees) is demonstrated. The colloidal-crystal films are assembled from poly(styrene-n-butyl acrylate-acrylic acid) amphiphilic latex spheres. The wettability transition temperature of the films can be well tuned by adjusting the n-butyl acrylate/styrene balance of the latex spheres. Superhydrophobic films are achieved when assembled at 90, 80, 70, 60, 40, or even 20 degrees C. This approach offers the flexibility of fabricating colloidal crystals with desired and tunable wettability, and can be further extended to general materials, opening up new perspectives in controlling the wettability behavior by chemical composition.
引用
收藏
页码：219 / 225
页数：7
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