Pengaruh Variasi Komposisi TEOS Pada Filler ZnO@SiO2 Terhadap Morfologi Dan Sifat Mekanik UV Cured Resin Composite

Arjana, Ararya Pandya (2026) Pengaruh Variasi Komposisi TEOS Pada Filler ZnO@SiO2 Terhadap Morfologi Dan Sifat Mekanik UV Cured Resin Composite. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Perkembangan additive manufacturing berbasis resin UV-cured mendorong kebutuhan resin komposit dengan sifat mekanik dan stabilitas proses yang lebih baik. Penelitian ini menganalisis pengaruh variasi komposisi TEOS terhadap karakteristik filler ZnO@SiO₂ serta pengaruhnya terhadap sifat UV-cured resin composite. Filler ZnO@SiO₂ disintesis menggunakan metode sol-gel melalui pendispersian ZnO nanoparticle dalam ethanol, penambahan TEOS dan ammonia sebagai katalis basa, pengadukan, pemisahan endapan, pencucian, serta pengeringan. Sampel dikarakterisasi menggunakan SEM-EDX, XRD, FTIR, pengujian viscosity, density, tensile strength, Young’s modulus, dan hardness Shore D. Hasil karakterisasi menunjukkan terbentuknya filler ZnO@SiO₂ melalui keberadaan unsur Zn, O, dan Si, teridentifikasinya gugus Si–O–Si dan Si–O–Zn, serta tetap dipertahankannya fase kristalin ZnO. Peningkatan komposisi TEOS meningkatkan pembentukan fase SiO₂ amorphous dan mengubah morfologi filler, tetapi juga dapat meningkatkan kecenderungan agglomeration. Penambahan filler meningkatkan viscosity resin dari 159,93 cP menjadi 176,40–185,40 cP dan density dari 1,2032 g/cm³ menjadi 1,2533–1,3700 g/cm³. Pada curing time 10 detik, sampel ZnO@SiO₂ T2 menghasilkan tensile strength sebesar 32,14 MPa dan Young’s modulus sebesar 459,08 MPa, meningkat masing-masing 7,83% dan 17,40% dibandingkan resin tanpa filler sebesar 29,81 MPa dan 391,04 MPa. Nilai hardness juga meningkat dari 76 menjadi 78 Shore D. Hasil tertinggi secara keseluruhan diperoleh pada ZnO@SiO₂ T1 dengan curing time 25 detik, yaitu tensile strength 36,63 MPa, Young’s modulus 550,81 MPa, dan hardness 84 Shore D.
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The development of UV-cured resin-based additive manufacturing has increased the demand for resin composites with improved mechanical properties and process stability. This study investigates the effect of TEOS composition variation on the characteristics of ZnO@SiO₂ filler and its influence on the properties of UV-cured resin composites. ZnO@SiO₂ filler was synthesized using a sol-gel method through the dispersion of ZnO nanoparticles in ethanol, followed by the addition of TEOS and ammonia as a base catalyst, stirring, precipitate separation, washing, and drying. The samples were characterized using SEM-EDX, XRD, FTIR, viscosity, density, tensile strength, Young’s modulus, and Shore D hardness tests. The characterization results confirmed the formation of ZnO@SiO₂ filler through the presence of Zn, O, and Si elements, the identification of Si–O–Si and Si–O–Zn functional groups, and the retention of the crystalline ZnO phase. Increasing the TEOS composition promoted the formation of amorphous SiO₂ and altered the filler morphology, although it also increased the tendency for agglomeration. The addition of filler increased the resin viscosity from 159.93 cP to 176.40–185.40 cP and the density from 1.2032 g/cm³ to 1.2533–1.3700 g/cm³. At a curing time of 10 s, the ZnO@SiO₂ T2 sample exhibited a tensile strength of 32.14 MPa and a Young’s modulus of 459.08 MPa, representing increases of 7.83% and 17.40%, respectively, compared with the unfilled resin, which had a tensile strength of 29.81 MPa and a Young’s modulus of 391.04 MPa. The hardness also increased from 76 to 78 Shore D. The highest overall properties were obtained for the ZnO@SiO₂ T1 sample at a curing time of 25 s, with a tensile strength of 36.63 MPa, a Young’s modulus of 550.81 MPa, and a hardness of 84 Shore D.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	ZnO@SiO₂, TEOS, sol-gel, UV cured resin, resin composite, filler, mechanical properties
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA418.9 Composite materials. Laminated materials.
Divisions:	Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Ararya Pandya Arjana
Date Deposited:	28 Jul 2026 01:51
Last Modified:	28 Jul 2026 01:51
URI:	http://repository.its.ac.id/id/eprint/138164

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