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      Sintesis dan Karakterisasi Viskosa Berbahan Serat TKKS sebagai Material Semikonduktor

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      Date
      2023
      Author
      Shofura, Syifa Karina
      Nikmatin, Siti
      Adiati, Rima Fitria
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      Abstract
      Viskosa merupakan serat semi sintetis yang berasal dari proses regenerasi selulosa. Dalam penelitian ini, kandungan alfa selulosa TKKS yang tinggi diolah sebagai bahan baku dissolving pulp. Pembuatan pulp dilakukan menggunakan metode prahidrolisis kraft dengan variasi konsentrasi alkali aktif pada tahap pemasakan yaitu 15%, 20%, dan 25%, selanjutnya pulp diolah menjadi alkali selulosa kemudian dibentuk menjadi viskosa bersifat selulosa xantat. Penelitian ini bertujuan untuk mengetahui konsentrasi alkali aktif terbaik pada tahap pemasakan yang dapat menghasilkan pulp dan viskosa optimum. Pengujian yang dilakukan berupa pengujian kimia dissolving pulp, pengujian sifat listrik dengan LCR meter dan pengujian sifat permukaan dengan perhitungan energi bebas permukaan (SFE) viskosa. Hasil penelitian menunjukkan konsentrasi alkali aktif 25% menghasilkan pulp terbaik sesuai dengan SNI 938:2017. Konduktivitas listrik dan resistivitas yang dihasilkan dari ketiga sampel viskosa menunjukkan material yang bersifat semikonduktor. Variasi cairan uji SFE dengan air dan FFA memberikan sifat hidrofilik pada permukaan viskosa TKKS.
       
      Viscose is a semi-synthetic fiber obtained from a cellulose regeneration process. In this study, OPEFB which has a high alpha cellulose content, was processed as a raw material for dissolving pulp. The pre-hydrolysis kraft method is used to produce pulp with varying concentrations of active alkali used during the cooking stage are 15%, 20%, and 25%, which is subsequently processed into alkaline cellulose and converted into viscose with cellulose xanthate properties. The objective of this study is to determine the best concentration of active alkali in the cooking stage that can produce optimal pulp and viscose. The tests were carried out in the chemical testing of dissolving pulp, testing the electrical properties with an LCR meter and testing the surface properties by calculating the surface free energy (SFE) of OPEFB viscose. The results showed that the 25% active alkali concentration produced the best pulp according to SNI 938:2017. The electrical conductivity and resistivity of the three viscose samples show that the material is semiconducting. Variation of the SFE test liquid with water and FFA gave hydrophilic properties on the OPEFB viscose surface.
       
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      http://repository.ipb.ac.id/handle/123456789/124020
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      • UT - Physics [1230]

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      Copyright © 2020 Library of IPB University
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      Indonesia DSpace Group 
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