Modifikasi dan Identifikasi Permukaan Kaca yang Dilapisi dengan TiO2/Asam Stearat untuk Aplikasi Self-Cleaning Material

Febby, Alvionita (2019) Modifikasi dan Identifikasi Permukaan Kaca yang Dilapisi dengan TiO2/Asam Stearat untuk Aplikasi Self-Cleaning Material. Diploma thesis, Universitas Andalas.

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Abstract

ABSTRACT Modification and Identification of Glass Surface Coated by TiO2/Stearic Acid for Self-Cleaning Material Applications By : Febby Alvionita (1510411027) Dr. Diana Vanda Wellia, Prof. Dr. Syukri Arief The surface of ultrahydrophobic glass has been successfully prepared using stearic acid as a surface modifier. The peroxo sol-gel method has been used to synthesize TiO2 precursors on the glass layer followed by modification of stearic acid. The maximal water contact angle of 141o has been obtained for the composition of 0.4 grams of stearic acid and 20 mL of ethanol (NKTS-2%). AFM analysis showed the roughness of NKTS-2% is 4,15 nm, which was greater than the pure glass. FTIR analysis also showed the chemical interaction between TiO2 and stearic acid at 1697cm-1 indicating vibration of C=O (carbonyl). EDX spectrum analysis of TiO2/Asam stearat (TiO2/C18H36O2) showed the titanium, oxygen, and carbon. The optimum sample (NKTS-2%) showed a good transparency,excellent mechanical stability, stability in room conditions, tap water and good self-cleaning properties compared to pure glass. Keywords: Ultrahydrophobic surface, TiO2, thin film, stearic acid, self-cleaning, transparent coating

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