Hydrophobic Material: Effect of Alkyl Chain Length on the Surface Roughness

Alfa Akustia Widati*, .- and Mochamad Zakki Fahmi, .- and Satya Candra Wibawa Sakti, .- and Titah Aldila Budiastanti, .- and Tri Esti Purbaningtias., .- (2022) Hydrophobic Material: Effect of Alkyl Chain Length on the Surface Roughness. Journal of Manufacturing and Materials Processing, 6 (5). ISSN 2352-1864

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Official URL: https://www.mdpi.com/2504-4494/6/5/110/htm


The clean technologies of self-cleaning surfaces are expanding rapidly. Highly hydrophobic coatings with strong adhesion, high durability, and dirt-free surfaces have been prepared via sol-gel deposition of SiO2-TiO2-alkylsilane. The influence of the effects of the alkyl chain length of silane on surface roughness was investigated. This deposition involved a one-layer technique to produce the rough surfaces. The bimetal oxide of SiO2-TiO2 created a high level of surface roughness. As a result, the water contact angle of the coatings increased with the increasing alkyl chain length of silane (up to C=8). However, the water contact angle decreased when the C=16 of alkylsilane was applied. It was predicted that the longer alkyl chain would cause the molecules to collapse. The higher hydrophobicity was produced by SiO2-TiO2-OTMS coatings with a water contact angle of about 140.67 ± 1.23°. The effect of the dip-coating technique (one layer and layer-by-layer) on hydrophobicity was also discussed. The results showed that coatings produced by the one-layer technique had a higher contact angle than coatings made by the layer-by-layer technique. The coatings were stable under outdoor exposure and able to hinder dirt attachment to their surfaces.

Item Type: Article
Uncontrolled Keywords: clean technologies; self-cleaning; hydrophobic; alkyl chain length; SiO2-TiO2-alkylsilane
Subjects: Q Science
Q Science > QD Chemistry
Q Science > QD Chemistry > QD450-801 Physical and theoretical chemistry
Divisions: 08. Fakultas Sains dan Teknologi > Kimia
Alfa Akustia Widati*, .-UNSPECIFIED
Mochamad Zakki Fahmi, .-UNSPECIFIED
Satya Candra Wibawa Sakti, .-UNSPECIFIED
Titah Aldila Budiastanti, .-UNSPECIFIED
Tri Esti Purbaningtias., .-UNSPECIFIED
Depositing User: Mr Vega Andi Budiman
Date Deposited: 09 Jun 2023 06:49
Last Modified: 10 Jun 2023 05:53
URI: http://repository.unair.ac.id/id/eprint/125923
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