Size effect on hydrophobic property of silica nanoparticle thin films

Name: Sorbareeya Saree

Organization : Thaksin University. Faculty of Science

Name: Karakade Kaewyai

Organization : Thaksin University. Faculty of Science

Name: Komkrich Chokprasombat

Organization : Thaksin University. Faculty of Science

Email : komkrich@tsu.ac.th

keyword: Sol-gel

ThaSH: Silica

ThaSH: Thin films -- Electric properties

Abstract: We report the effects of silica nanoparticle sizes on hydrophobic property of thin films deposited on glass slides. The nanoparticles were synthesized by a sol-gel method with two different conditions to obtain the particles with different in size. In the first condition, the particles were prepared without control of an addition rate of a precursor (tetraethoxysilane, TEOS) in contrast to the second condition in which the addition rate of TEOS was varied as 0.1, 0.5 and 1.0 mL/min. The EDS results confirmed that the particles from the both techniques were only composed of Si and O. The particles obtained from the first route were of 13-64 nm in size with rough surfaces, and were smaller when ethanol was decreased. By contrast, the second route provided the particles with smooth surfaces and their diameters ranged between 300 and 600 nm depending on the addition rate of the precursor. To prepare hydrophobic thin films, surfaces of the particles were modified by various amounts of methyltriethoxysilane (MTEOS) as 2, 4 and 6 mL. The hydrophobic property of the silica thin films was confirmed by the presence of functional groups of Si-CH3 and high contact angles above 90 degrees.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2020

Modified: 2024-10-15

Issued: 2024-10-15

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BibliograpyCitation : In the Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn in association, Thammasat University Faculty of Science and Technology. The Pure and Applied Chemistry International Conference 2020 (PACCON 2020) (MN51-55). Bangkok : Thammasat University

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