Fajra, Dewi Nora (2020) Sifat Termomekanik Komposit PEG/Silika Kuarsa Mikron (PEG/m-SiO2). Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Komposit PEG/m-SiO2 dengan variasi komposisi pengisi serbuk silika kuarsa mikron telah berhasil disintesis. Bahan dasar yang digunakan dalam penelitian ini adalah pasir silika alam yang berasal dari Tanah Laut, Pelaihari, Kalimantan Selatan. Serbuk silika kuarsa mikron disintesis dari pasir tersebut melalui proses wet milling dan leaching dengan media HCl. Variasi komposisi pengisi yang digunakan adalah 5wt% dan 10wt% serbuk silika mikron dengan menambahkan dipersan (sodium dodecyl sulfate). Hasil karakterisasi FTIR dan XRD mengkonfirmasi tidak adanya ikatan kimia antara PEG dengan silika dan terbentuknya komposit. Karakterisasi SEM/EDX digunakan untuk mengetahui homogenitas pengisi pada komposit. Sifat termomekanik PEG/m-SiO¬2 diperoleh dari instrumen Dynamic Mechanical Analyzer (DMA). Hasil menunjukkan bahwa nilai modulus simpan secara umum meningkat dengan semakin kecilnya ukuran pengisi, modulus simpan komposit menurun seiring dengan peningkatan temperatur, serta adanya silika mikron sebagai bahan pengisi dapat meningkatkan temperatur leleh komposit.
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PEG/m-SiO2 composites with composition variations of micron-sized silica quartz have been successfully synthesized. The basic material used in the synthesis was silica sand from Pelaihari, South Kalimantan. The silica powder was produced by wet milling and HCl immersion process. FTIR and XRD characterization confirmed that PEG and silica has no chemical bonds and that the composites formed. Characterization of SEM/ EDX was performed to assess the filler homogeneity. Thermomechanical data of Storage Modulus and Melting Temperature (Tm) of the PEG/m-SiO2 composite was obtained from Dynamic Mechanical Analyzer (DMA) instrument. Results show that the storage modulus increases with smaller filler size, the storage modulus of composite decreases with increasing temperature, and also addition of micron-sized silica as a filler is able to increase the melting temperature of the composites.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSFi 620.118 Faj s-1 2020 |
| Uncontrolled Keywords: | Silikamikron, Komposit, Modulus Simpan |
| Subjects: | Q Science > QC Physics > QC173.4.C63 Composite materials Q Science > QC Physics > QC585.75.S55 Silica |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Dewi Nora Fajra |
| Date Deposited: | 21 Mar 2023 04:01 |
| Last Modified: | 21 Mar 2023 04:01 |
| URI: | http://repository.its.ac.id/id/eprint/73695 |
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