Pengaruh Konsentrasi SiO2 Berbasis TEOS (Tetraethyl Orthosilicate) dan Bahan Alam terhadap Sifat Hidrofobisitas

Putri, Savira Arsah (2019) Pengaruh Konsentrasi SiO2 Berbasis TEOS (Tetraethyl Orthosilicate) dan Bahan Alam terhadap Sifat Hidrofobisitas. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Lapisan yang cenderung hidrofobik telah berhasil disintesis pada penelitian yang berjudul “Pengaruh Konsentrasi SiO2 Berbasis TEOS (Tetraethyl Orthosilicate) dan Bahan Alam Terhadap Sifat Hidrofobisitas” ini. Penelitian ini bertujuan untuk mengetahui pembentukan fasa kristobalit, distribusi partikel dan morfologi permukaan dari lapisan hidrofobik yang dihasilkan serta untuk mengetahui pengaruh perbedaan konsentrasi terhadap hidrofobisitas lapisan hidrofobik yang dihasilkan. Penilitian ini dilakukan menggunakan metode sol-gel disertai dengan adanya proses wet milling dan kalsinasi dengan memanfaatkan material alam pasir silika dari Pantai Kepulauan Bangka-Belitung yang dicampurkan dengan prekursor proanalis TEOS sebagai bahan dasar. Lapisan hidrofobik yang dihasilkan dikarakterisasi melalui pengujian XRD, FT-IR, PSA, SEM, AFM, UV-VIS dan WCA. Hasil penelitian ini menunjukkan bahwa fasa kristobalit partikel SiO2 dihasilkan dari proses kalsinasi. Distribusi partikel pada permukaan lapisan merata dan struktur morfologi hirarki berhasil terbentuk dengan partikel SiO2 pasir yang letaknya berdampingan atau dikelilingi dengan partikel SiO2 berbasis TEOS. Pengaruh konsentrasi terdapat pada kekasaran dan WCA, dimana jika konsentrasi SiO2 dari pasir tinggi, maka lapisan semakin kasar dan WCA akan semakin besar sehingga semakin hidrofobik, begitupula sebaliknya.
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A coating that is inclined to be hydrophobic has been successfully fabricated in this research, entitled “The Effect of Concentration of TEOS and Natural Material Based SiO2 to The Properties of Hydrophobicity”. This research aimed to determine the formation of cristobalite phase, particle distribution and surface morphology of the hydrophobic coating produced and also to determine the effect of the difference in concentration to the hydrophobicity of the hydrophobic coating produced. This research was conducted by sol-gel method which was supported by wet milling and calcination process by utilizing the mixture of natural material which was silica sand from Bangka-Belitung Islands and proanalyst TEOS precursor as the basic material. The hydrophobic coating was characterized by XRD, FT-IR, PSA, SEM, AFM, UV-VIS and WCA. The results of this research showed that the cristobalite phase of SiO2 particles was formed in calcination process. Particle distribution was evenly dispersed and hierarchical morphology structure was formed with the nature based SiO2 particles were side-by-side or surrounded with TEOS based SiO2 particles. The concentration affected the roughness of hydrophobic coating and WCA. If the concentration of nature based SiO2 was high, then the coating would get rougher and the WCA would be increased, so that it would be more hydrophobic, vice versa.

Item Type:	Thesis (Other)
Additional Information:	RSFi 620.118 Put p-1 2019 3100019081506
Uncontrolled Keywords:	Hydrophobic, Silica Nanoparticles, Silica Sand, Sol-Gel Method, TEOS
Subjects:	Q Science Q Science > QC Physics > QC585.75.S55 Silica
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Savira Arsah Putri
Date Deposited:	17 Oct 2025 00:19
Last Modified:	17 Oct 2025 00:19
URI:	http://repository.its.ac.id/id/eprint/65374

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