-
Surface property and stability of transparent superhydrophobic coating based on SiO2-polyelectrolyte multilayer
- Back
Document Title
Surface property and stability of transparent superhydrophobic coating based on SiO2-polyelectrolyte multilayer
Author
Jindasuwan S., Nimittrakoolchai O.-U., Supothina S.
Name from Authors Collection
Affiliations
Department of Industrial Chemistry, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bangkok, 10800, Thailand; National Metal and Materials Technology Center, National Science and Technology Development Agency (NSTDA), 114 Thailand Science Park Paholyothin Rd, Klong Luang, Pathumthani 12120, Thailand
Type
Article
Source Title
Medziagotyra
ISSN
13921320
Year
2016
Volume
22
Issue
2
Page
309-313
Open Access
All Open Access, Bronze, Green
Publisher
Kauno Technologijos Universitetas
DOI
10.5755/j01.ms.22.2.12952
Format
Abstract
Artificial superhydrophobic films were deposited onto a glass slide by performing layer-by-layer deposition of 3.5 bilayers of poly(allylamine hydrochloride)/ poly(acrylic acid) polyelectrolyte, followed by a layer of SiO2 nanoparticles of various amounts to enhance the surface roughness and a fluorosilane to reduce the surface free energy. Higher SiO2 content incorporated into the films resulted in rougher surface and higher water contact angle. The total surface free energy determined by using the Owens-Wendt equation dramatically decreased from 31.46 mJ·m-2 for the film having the relatively flat surface to only 1.16 mJ·m-2 for the film having the highest surface roughness of 60.2 ± 1.1 nm. All the films were optically transparent and had excellent adhesion based on the peel test. Indoor and accelerated weathering tests revealed good weathering stability. © Kauno Technologijos Universitetas. All rights reserved.
Keyword
Biomimetic | Lotus effect | Polyelectrolyte | Superhydrophobic | Water-repellent
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
Funding Sponsor
National Science and Technology Development Agency
License
N/A
Rights
N/A
Publication Source
Scopus