Issue 5, 2009
From the journal:

Journal of Materials Chemistry

Superhydrophobic and transparent coatings based on removable polymeric spheres†

Qian Feng Xu,a   Jian Nong Wang,*b   Ian H. Smithc  and  Kevin D. Sandersonc  

* Corresponding authors

a School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, P. R. of China

b Key Laboratory for Advanced Civil Engineering Materials (Ministry of Education), School of Materials Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, P. R. of China
E-mail: jnwang@tongji.edu.cn
Fax: +86-21-65985385
Tel: +86-21-65982867

c Building Products – Research & Development, Pilkington Group Limited, Pilkington European Technical Centre, Hall Lane, Lathom Ormskirk, Lancashire, England

Abstract

Superhydrophobic and also highly transparent coatings can be prepared by a sol-gel dip-coating method. Polystyrene spheres (PSs) are used as a removable template and the coatings have a volcano-like micro/nano structure. The micrometer-sized pinnacles form by the assembly of PSs and silica particles, whereas the nanometer-sized peaks on individual pinnacles are created by the removal of PSs. Due to this particular structure the contact angle of a 4 µL water droplet on the prepared coating can reach 160° with the corresponding sliding angle being close to 0°. Additionally, the transmittance of the coated glass is as high as the uncoated glass.

Graphical abstract: Superhydrophobic and transparent coatings based on removable polymeric spheres

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Article information

DOI
https://doi.org/10.1039/B812659C
Article type
Paper
Submitted
23 Jul 2008
Accepted
04 Nov 2008
First published
10 Dec 2008

J. Mater. Chem., 2009,19, 655-660

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Superhydrophobic and transparent coatings based on removable polymeric spheres

Q. F. Xu, J. N. Wang, I. H. Smith and K. D. Sanderson, J. Mater. Chem., 2009, 19, 655 DOI: 10.1039/B812659C

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