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All Journal Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Jurnal Rekayasa Kimia & Lingkungan
Lia Lismeri
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Other

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Journal : Jurnal Rekayasa Kimia

 1 
Aplikasi Mikrofibril Selulosa Dari Batang Sorgum Sebagai Pengisi Pada Sintesis Film Bioplastik Yuli Darni; Hilda Lestari; Lia Lismeri; Herti Utami; Edwin Azwar
Jurnal Rekayasa Kimia & Lingkungan Vol 13, No 1 (2018): Jurnal Rekayasa Kimia & Lingkungan (June, 2018)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (451.303 KB) | DOI: 10.23955/rkl.v13i1.8647

Abstract

 Pada penelitian ini telah disintesis bioplastik dengan penambahan mikrokristalin selulosa dari batang sorgum  sebagai pengisi. dengan  formulasi pati sorgum-gelatin dan  pemplastis gliserol. Formulasi pati sorgum-gelatin yang digunakan yaitu 10:0 ; 9,5:0,5 ; 8,5:1,5 ; 7,5:2,5 ; 6,5:3,5 dan 5,5:4,5 (gr/gr). Penambahan mikrokristalin selulosa sebesar 0 %, 1%, 2%,  dan 3%  dari total berat kering campuran pati dan gelatin. Suhu gelatinisasi yang digunakan pada 95oC dan konsentrasi gliserol 10% berat berdasarkan persen berat kering dari total berat campuran 10 gram pati dan gelatin. Kecepatan pengadukan sebesar 375 rpm  dengan temperatur pengeringan yang digunakan  adalah 60oC selama 11 jam. Ukuran granula pati yang digunakan yaitu lolos ayakan 60 mikron dan waktu pengadukan selama 35 menit. Mikrokristalin selulosa sebagai pengisi dihasilkan dengan metode alkali-mekanik dan berukuran 8 mikron. Penggunaan mikrokristalin selulosa dapat meningkatkan kuat tarik sebesar 3,65-10,47 MPa, dan menurunkan perpanjangan putus sebesar 2,14-14,32%.  
Modification of Sorghum Starch-Cellulose Bioplastic with Sorghum Stalks Filler Yuli Darni; Febrina Yohana Dewi; Lia Lismeri
Jurnal Rekayasa Kimia & Lingkungan Vol 12, No 1 (2017): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (523.648 KB) | DOI: 10.23955/rkl.v12i1.5410

Abstract

This study evaluated the feasibility of bioplastics production by various ratio of sorghum starch and cellulose from red seaweed Eucheuma spinossum, and the use of glycerol as plasticizer and sorghum stalks as filler. Solid-liquid matrix transition should be far over the operating temperature of gelatinization and extracted at 95oC in order to avoid the loss of conductivity. The analyzed variables were starch and cellulose seaweed Eucheuma spinossum and the addition of variation of filler. Sorghum stalk could be expected to affect the mechanical and physical properties of bioplastics. A thin sheet of plastic (plastic film) was obtained as a result that have been tested mechanically to obtain the best condition for the formulation of starch-cellulose 8.5:1.5 (g/g). From the result of morphological studies, the fillers in the mixture composites were more randomly in each product and the addition of filler can increase mechanical properties of bioplastics. Chemical modification had a major effect on the mechanical properties. The phenomena of degradation and thermoplasticization were visible at chemical changes that can be observed in FTIR spectrum test results.
Synthesis of Biofoam Based on Starch Mixture of Cassava Peel and Kepok Banana Peel with Chitosan Additive to Improve Mechanical and Physical Characteristics Yuli Darni; Ghea Maulidaco Anandati; Eva Mayanti; Lia Lismeri; Herti Utami; Azhar Azhar
Jurnal Rekayasa Kimia & Lingkungan Vol 18, No 1 (2023): Jurnal Rekayasa Kimia dan Lingkungan (January-June, 2023 )
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v18i1.28089

Abstract

Biodegradable foam(biofoam) is a type of bioplastic that is used as an alternative packaging to replace styrofoam which is safe and environmentally friendly. This study aims to determine the characteristics of biofoam made from cassava peel starch (A) and banana peel starch (B), as well as the effect of adding chitosan to the physical, mechanical, and biodegradation properties of the resulting biofoam. In the manufacture of biofoam, the variation of the A:B ratio used is 1:0; 3:2; 1:1 (%w/w). While the chitosan content added was 0%, 15%, and 30% by weight of starch and blowing agent NaHCO3 with a content of 12% by weight of starch. The production of biofoam was carried out using the thermopressing method with a printing temperature of 125°C and a printing time of 7 minutes. The results of biofoam were characterized by density, water absorption, compressive strength, biodegradation, and FTIR functional groups. Based on the research results, it is known that biofoam is close to commercial biofoam standards, namely biofoam with an A:B ratio of 3:2 and the addition of 15% chitosan with a density value of 0.560 g/cm3, the water absorption capacity of 33.68%, compressive strength value of 5, 05 MPa, and the decomposition power of 17.44%. These variations have functional groups N–H, O–H, C–H, C=O, C–N, and C–O.
Co-Authors Azhar Azhar Citra Persada Donny Lesmana Edwin Azwar Eva Mayanti Febrina Yohana Dewi Ghea Maulidaco Anandati Herti Utami Herti Utami Hilda Lestari Nandi Haerudin Novri Tanti Sri Ratna Sulistyanti Yuli Darni Yuli Darni