The effect of surface chemistry on anti-soiling properties of transparent perfluoroalkyl and alkyl modified silica coatings
Yükleniyor...
Dosyalar
Tarih
2022
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier B.V.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Various physical and chemical surface parameters, e.g., surface roughness and surface chemistry, contribute to anti-soiling (AS) properties. Nevertheless, the effect of surface chemistry has not been distinctly elucidated yet. In this study, a set of mechanically stable and durable hydrophobic AS coatings with controlled surface chemistry were synthesized, while surface roughness was kept below 1 nm. Fluoroalkylsilane (FAS), alkylsilane (AL), and tetraethyl orthosilicate (TEOS) were employed for synthesis. Surface chemistry and surface roughness were quantified by XPS and AFM. A soiling lab simulator was designed to accelerate the soiling process. AS properties were quantified by UV–vis spectroscopy and optical microscopy. The surface free energy of coatings was estimated through (polar and apolar liquids) contact angle measurements (ranging from 16 to 30 mN/m), and a clear correlation was discovered between the AS properties and surface free energy. Moreover, mechanical properties and weathering resistance of the coatings were analyzed by nano-indentation and QUV accelerated weathering tester. While all coatings showed acceptable AS properties (transmission loss after dust deposition between 1/5 and 2/5 of uncoated glass) and excellent mechanical strength (above 27 GPa modulus and 2 GPa hardness), FAS-based coatings showed a significantly higher durability against weathering as compared to the AL-based ones. © 2022 Elsevier B.V.
Açıklama
Anahtar Kelimeler
Alkylsilane, Anti-Soiling, Perfluoroalkyl Silane, Silica Coating, Surface Chemistry
Kaynak
Surfaces and Interfaces
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
30
Sayı
Künye
Taheri, S., Motlagh, F. H., Dehestanizad, S., Yahyaei, H., Motallebzadeh, A., Zarrabi, A., . . . Makki, H. (2022). The effect of surface chemistry on anti-soiling properties of transparent perfluoroalkyl and alkyl modified silica coatings. Surfaces and Interfaces, 30 doi:10.1016/j.surfin.2022.101824
