Karakterisasi Sifat Mekanik Film PVA Berserat Selulosa Kulit Buah Pinang (Areca Catechu L) yang Mengalami Perlakuan NaOH
DOI:
https://doi.org/10.25077/jfu.9.4.495-501.2020Abstract
Penelitian telah dilakukan mengenai karakterisasi sifat mekanik film PVA berserat selulosa kulit buah pinang yang mengalami perlakuan NaOH. Serat pinang diberi perlakuan NaOH 2,5%, 5%, 7,5% dan 10% kemudian serat direndam selama 4 jam. Tahap penelitian ini adalah penghalusan serat, perendaman serat, ekstraksi selulosa, pemutihan serat, proses sonikasi, dan pembentukan film bioplastik dengan pencampuran antara selulosa dengan matrik film polyvinil alcohol (PVA). Untuk mengetahui karakteristik sifat mekanik menggunakan alat uji tarik. Nilai optimum kekuatan tarik diperoleh pada variasi konsentrasi NaOH 5 % yaitu sebesar 1,27 MPa, nilai regangan tertinggi pada konsentrasi NaOH 10 % yaitu 0,077 dan modulus elastisitas tertinggi pada NaOH 5 % yaitu sebesar 17,39 MPa. Nilai absorbansi tertinggi di peroleh pada konsentrasi NaOH 2,5 % yaitu sebesar 2,897. Penelitian ini memiliki prospek untuk mengembangkan bahan alam untuk pembuatan material maju berupa film bioplastik seperti kaca ITO, dan anti gores handphone.
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Research has been carried out on the characterization of of PVA fibrous cellulose’s mechanical properties, betel nut skin, which has NaOH treatment. Areca nut is treated with 2.5%, 5%, 7.5%, and 10% then the fiber is soaked for 4 hours. The stages of this research are fiber refinement, fiber immersion, cellulose extraction, fiber bleaching, sonication process, and the formation of bioplastic films by mixing cellulose with a polyvinyl alcohol film matrix. To determine the characterization of mechanical properties using a tensile test tool. The optimal value of tensile strength occurs at 5% NaOH concentration variation of 1.27 MPa. The highest strain value at 10% NaOH concentration is 0.077, and the highest modulus of elasticity at 5% NaOH is 17.39 MPa. The highest absorbance value was obtained at a 2.5% NaOH concentration of 2.897. This research has the prospect of developing other materials for the manufacture of advanced materials in the form of bioplastic films such as ITO glass and mobile phone scratch resistance.
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