Pengaruh Kristalinitas terhadap Stabilitas Termal Komposit Termoplastis Berpengisi Silika Xerogel

Authors

  • Nur Aini Fauziyah UPN "Veteran" Jawa Timur https://orcid.org/0000-0002-9603-9828
  • Dyah Suci Perwitasari UPN Veteran Jawa Timur
  • Primasari Cahya Wardhani UPN Veteran Jawa Timur
  • Teuku Andi Fadly UPN Veteran Jawa Timur

DOI:

https://doi.org/10.25077/jfu.11.3.327-333.2022

Keywords:

deformasi, kristalografi, TGA, silika xerogel

Abstract

Penetian ini bertujuan untuk mengetahui pengaruh kristalinitas terhadap stabilitas termal komposit termoplastis dengan pengisis silika xerogel. Polimer yang digunakan adalah polietilena glikol (PEG 4000) yang merupakan polimer termoplastis. Silika xerogel diekstraksi melalui proses alkali fusion. Silika xerogel yang didapatkan menunjukkan fasa amorf melalui X-Ray Diffraction (XRD). Silika xerogel ditambahakan ke dalam PEG 4000 dengan komposisi yang bervariasi, yaitu, 0, 5, 10, dan 20%. Penambahan silika xerogel menurunkan tingkat kristalinitas komposit karena PEG murni merupakan material semikristalin. Melalui analisis termal menggunakan Thermogravimetric Analysis (TGA), pengaruh kristalinitas komposit tampak jelas pada daerah sebelum polimer mengalami transisi leleh. Namun, pada daerah dekomposisi (T>400°C), pengaruh kristalinitas pada komposit tidak ada lagi. Hasil ini sangat menarik dikarenakan massa dekomposisi akhir menunjukkan nilai yang sama dengan komposisi silika xerogel yang ditambahkan, misalnya pada penambahan 20%, massa yang tersisa setelah dekomposisi adalah 20,77982 %. Oleh karenanya, analisis kristalinitas sangat mendukung hasil analisis termal dengan TGA pada komposit.

Author Biography

Nur Aini Fauziyah, UPN "Veteran" Jawa Timur

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Published

2022-07-01

How to Cite

Fauziyah, N. A., Perwitasari, D. S., Wardhani, P. C., & Fadly, T. A. (2022). Pengaruh Kristalinitas terhadap Stabilitas Termal Komposit Termoplastis Berpengisi Silika Xerogel. Jurnal Fisika Unand, 11(3), 327–333. https://doi.org/10.25077/jfu.11.3.327-333.2022

Issue

Vol. 11 No. 3 (2022)

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