Sifat Mekanik Dan Optik Komposit Pmma/Nano-Zirkon Dengan Variasi Ketebalan

Dona, Rama (2021) Sifat Mekanik Dan Optik Komposit Pmma/Nano-Zirkon Dengan Variasi Ketebalan. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini bertujuan untuk menentukan sifat mekanik dan optik komposit PMMA dengan pengisi nano-zirkon (ZrSiO4) yang divariasikan ketebalannya. Serbuk nano-zirkon diperoleh dari pasir alam Kalimantan Selatan. Tahapan sintesis serbuk zirkon meliputi pemisahan magnetik, perendaman dengan HCl, reaksi NaOH, dan penggilingan selama 15 jam, dilanjutkan dengan anil 200 ºC selama 1 jam. Komposisi serbuk zirkon divariasi 1; 2,5; dan 5 wt.%. Variasi ketebalan dilakukan dengan menambah massa serbuk zirkon dalam komposit yaitu 2, 3, 4, 5, dan 6 gram dan memperoleh ketebalan masing-masing 0,13; 0,18; 0,28; 0,35 dan 0,40 mm (ditulis berturut-turut sebagai d1, d2, d3, d4, dan d5). Identifikasi fasa serbuk zirkon ditentukan dengan teknik difraksi sinar-X (XRD) konvensional pada 2 15 s.d. 65°. Keberhasilan sintesis komposit PMMA/nano-zirkon dibuktikan dengan uji XRD dan FTIR. Selanjutnya, uji SEM-EDX dilakukan untuk memperoleh informasi morfologi pengisi dan dispersibilitas pengisi di dalam komposit. Sifat mekanik diperoleh menggunakan instrumen DMA (variasi gaya 1-100 N) dalam mode tarik untuk memperoleh grafik stress-strain. Sedangkan sifat optik diuji dengan instrumen UV-Vis. Hasil pengujian DMA menunjukkan semakin tebal sampel dan semakin tinggi konsentrasi pengisi, nilai kuat tarik (KT) meningkat. Sedangkan ketebalan tidak mempengaruhi nilai modulus Young. Nilai transparansi pada panjang gelombang visible dan pada daerah UV-B menurun dengan meningkatnya konsentrasi dan ketebalan. Lebih lanjut, komposit dengan transmitansi tertinggi adalah sampel d1_1% dengan nilai transmitansi 66,83% pada sinar tampak. Komposit dengan sifat mekanik yang paling optimum adalah sampel d3_1% dengan nilai KT sebesar 12,7 GPa, dua kali lebih tinggi dari PMMA murni.
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This study aims to explore the mechanical and optical properties of PMMA/nano-zircon (ZrSiO4) filler which was varied in thickness. The nano-zircon powder was obtained from the natural sands of Kalimantan Selatan. The steps of zircon powder synthesis include magnetic separation, immersion with HCl, reaction of NaOH, and milling of 15 h, followed by annealed of 200 ºC for 1 h. The composition of the zircon powder was varied at 1; 2,5; and 5 wt.%. Thickness variation was carried out by adding the mass of zircon powder into the composite, i.e., 2, 3, 4, 5, and 6 grams, and was obtained a thickness of 0,13; 0,18; 0,28; 0,35 and 0,40 mm, respectively (denoted as d1, d2, d3, d4, and d5). The phase identification of zircon powder was determined by conventional X-ray diffraction (XRD) technique at 2 from 15 to 65°. The successful synthesis of PMMA/nano-zircon composite was confirmed by XRD and FTIR instruments. Furthermore, the SEM-EDX test was carried out to obtain information on the filler morphology of powder and the filler dispersibility in the composite. The mechanical properties were obtained using a dynamic mechanical analyzer (DMA) instrument (force variation 1-100 N) in tensile mode to obtain a stress-strain graph. While the optical properties were carried out with UV-Vis instruments. The results of the DMA test show that the tensile strength (KT) increases with the thicking of the sample and the higher the filler concentration. While the thickness do not really affect the value of Young's modulus. The transparency at visible wavelengths and UV-B wavelengths decreases with increasing concentration and thickness. Furthermore, the composite with the highest transmittance is sample d1_1% (d1 with 1 wt%) with a transmittance value of 66.83%. The composite with the most optimum mechanical properties was sample d3_1% with a KT value of 12.7 GPa, two times higher than pure PMMA.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Komposit PMMA/nano-zirkon, variasi ketebalan, sifat mekanik dan optik, PMMA/zircon composites, thickness variation, mechanical and optical properties
Subjects:	Q Science > QC Physics Q Science > QC Physics > QC100 Crystals. Q Science > QC Physics > QC162 Adsorption and absorption Q Science > QC Physics > QC173.4.C63 Composite materials
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45101-(S2) Master Thesis
Depositing User:	Rama Dona
Date Deposited:	03 Sep 2021 14:35
Last Modified:	03 Sep 2021 14:35
URI:	http://repository.its.ac.id/id/eprint/91590

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