Studi Bahan Akustik dan Insulasi Termal Poliester Berpenguat Nanoselulosa dari Serat Tandan Kosong Kelapa Sawit dengan Metode Penuangan (Casting)

Aditama, Axel Gian (2017) Studi Bahan Akustik dan Insulasi Termal Poliester Berpenguat Nanoselulosa dari Serat Tandan Kosong Kelapa Sawit dengan Metode Penuangan (Casting). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Komposit berpenguat nano filler merupakan salah satu material yang sedang dikembangkan. Salah satu aplikasinya dapat digunakan sebagai bahan akustik dan insulasi termal. Tujuan dari penelitian ini adalah menganalisis pengaruh komposisi massa filler terhadap morfologi, nilai koefisien absorpsi suara dan konduktivitas termal. Penelitian ini menggunakan resin poliester tak jenuh (UPR) sebagai matriks dan nanoselulosa sebagai filler. Fraksi berat yang dipakai yaitu 2, 4 dan 6%. Pengujian yang dilakukan dalam penelitian meliputi SEM, TEM, FTIR, TGA, densitas, absorpsi suara dan konduktivitas termal. Pembuatan nanoselulosa dengan menggunakan tiga tahap perlakuan kimia yaitu alkalisasi, bleaching dan hidrolisis asam. Penambahan fraksi berat menyebabkan nilai absorpsi suara (α) naik. Nilai α tertinggi pada frekuensi 4000 Hz terdapat pada UPR/Nanoselulosa 6%, yaitu sebesar 0,4475 Hz. Seiring bertambahnya filler jumlah void pada komposit juga bertambah. Void terbentuk karena ada udara yang terperangkap selama proses manufaktur, penyusutan UPR dan gap diantara serat. Nilai konduktivitas termal (k) komposit menurun seiring bertambahnya filler, disebabkan nilai k selulosa lebih rendah daripada UPR. Nilai k terendah yaitu 0.164 W/mK dimiliki UPR/nanoselulosa 6%. ================================================================= Composite materials reinforced by nanofiller are one of the developed materials. It can be used as an acoustical and thermal insulation material. The purpose of this study was to analyze the effect of weight fraction of filler to the morphology, sound absorption coefficient and thermal conductivity. This study used unsaturated polyester resin as the matrix, nanocellulose as the filler. Weight fractions used for this research were 2, 4 and 6%. Tests performed in this study were included SEM, TEM, FTIR, density sound absorption and thermal conductivity. Extraction of nanocellulose used three step chemical treatment. There are alkali treatment, bleaching and acid hydrolysis. As the fiber loading increased, the sound absorption coefficient (α) increased. The highest α value at 4000 Hz was obtained on UPR/Nanocellulose 6%, that was 0,4475. Furthermore, void content also increased due to entrapped air during manufacture, shrinkage of UPR and gap between fiber. On the other hand, thermal conductivity (k) decreased as fiber loading increased cause thermal conductivity of cellulose is lower than UPR. The lowest k value was 0.164 W/mK that obtained in UPR/Nanocellulose 6%.

Item Type: Thesis (Undergraduate)
Additional Information: RSMt 620.118 Adi s
Uncontrolled Keywords: Bahan Akustik, Insulasi Termal, Tandan Kosong Kelapa Sawit, Selulosa, Resin Poliester Tak Jenuh, Acoustical Materials, Cellulose, Oil Palm Empty Fruit Bunch, Thermal Insulation, Unsaturated Polyester Resin
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: Axel Gian Aditama
Date Deposited: 02 Nov 2017 03:44
Last Modified: 05 Mar 2019 06:05
URI: http://repository.its.ac.id/id/eprint/42842

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