DIAN MARDINA, 1827041005 (2021) SINTESIS DAN KARAKTERISASI WOLLASTONITE MENGGUNAKAN SILIKA ABU DAUN BAMBU DAN MERETIX-MERETIX SHELL. Masters thesis, UNIVERSITAS LAMPUNG.
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Abstrak (Berisi Bastraknya saja, Judul dan Nama Tidak Boleh di Masukan)
Wollastonite telah disintesis menggunakan limbah bio (daun bambu dan cangkang kerang tahu) dengan metode rekasi padatan. Penelitian ini dilakukan untuk mengetahui pengaruh variasi suhu kalsinasi 900 oC, 1000 oC dan 1100 oC terhadap sifat termal, fasa yang terbentuk, karakterisasi morfologi, dan gugus fungsi pada wollastonite. Karakterisasi yang digunakan yaitu Differential Thermal Analysis-Thermogravimetric Analysis (DTA-TGA), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) dan Fourier Transform Infra-Red (FTIR). Hasil analisa FTIR menunjukkan adanya wollastonite dari ketiga sampel yang dikonfirmasi dengan munculnya gugus Si-O-Ca pada setiap sampel. Pembentukan wollastonite juga diidentifikasi melalui hasil XRD yang menunjukkan adanya fasa β-CaSiO3 dan fasa α-CaSiO3 pada masing-masing sampel. Pembentukan fasa β- CaSiO3 dan α-CaSiO3 juga diidentifikasi dari hasil DTA-TGA. Selain itu, analisa DTA-TGA juga menunjukkan adanya penyusutan massa akibat terjadinya penguapan H2O dan dekomposisi kalsium karbonat (CaCO3) menjadi kalsium oksida (CaO) pada sampel wollastonite. Morfologi wollastonite diamati melalui SEM menunjukkan bentuk pertikel spheroid (bulat) dengan ukuran butir rata-rata 0,28 μm, 0,32 μm dan 0,71 μm pada sampel wollastonite suhu 900 oC, 1000 oC dan 1100 oC. Kata kunci: wollastonite, daun bambu, meretix-meretix shell, reaksi padatan. Wollastonite has been synthesized from bio waste materials (bamboo leave ash and meretix meretix shell) by solid state reaction. The objective of this study to determine the effect of variations in calcination temperature of 900 oC, 1000 oC and 1100 oC on thermal properties, phase formation, morphological characterization, and functional groups in wollastonite. Samples were characterized by Differential Thermal Analysis-Thermogravimetric Analysis (DTA-TGA) to determine the thermal properties, X-Ray Diffraction (XRD) to determine the formed phase, Scanning Electron Microscopy (SEM) to determine the microstructure, and Fourier Transform Infra-Red (FTIR) to determine functional groups. The results of the FTIR analysis showed the presence of wollastonite from the three samples which confirmed the presence of Si-O-Ca groups from the samples. Wollastonite formation was also identified through XRD results which showed the presence of β-CaSiO3 and α-CaSiO3 in each sample. The formation of β-CaSiO3 and α-CaSiO3 phases was also identified from the DTA-TGA results. DTA-TGA analysis also showed a mass shrinkage due to the evaporation of H2O and the decomposition of calcium carbonate (CaCO3) into calcium oxide (CaO) in wollastonite samples. The morphology of wollastonite observed through SEM showed the shape of spheroidal particles (spherical) with an average grain size of 0.28 μm, 0.32 μm and 0.71 μm in wollastonite samples at 900 oC, 1000 oC and 1100 oC. Keywords: wollastonite, bamboo leave, meretix-meretix shell, solid state reaction.
| Jenis Karya Akhir: | Tesis (Masters) |
|---|---|
| Subyek: | 500 ilmu pengetahuan alam dan matematika |
| Program Studi: | FAKULTAS MIPA > Prodi Fisika |
| Pengguna Deposit: | UPT . Neti Yuliawati |
| Date Deposited: | 24 May 2022 06:22 |
| Terakhir diubah: | 24 May 2022 06:22 |
| URI: | http://digilib.unila.ac.id/id/eprint/61740 |
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