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All Journal Journal of Tropical Soils Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Mimbar Agribisnis: Jurnal Pemikiran Masyarakat Ilmiah Berwawasan Agribisnis Jurnal Teknologi Pertanian Andalas Agroteknika Mechanical Engineering for Society and Industry Journal of Applied Agricultural Science and Technology atech-i Studi Multidisipliner: Jurnal Kajian Keislaman Indonesian Journal of Forestry Research
Syafri, Edi
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Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Transportation

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E-NOVEL PRODUKSI FILM PATI: KARAKTERISASI PRODUKSI FILM PATI DARI LIMA JENIS PATI BERBEDA Rezekinta, Angelina; Kasim, Anwar; Syafri, Edi; Chaniago, Irawati; Ridwan, Firman
Jurnal Teknologi Pertanian Andalas Vol 27 No 2 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jtpa.27.2.259-266.2023

Abstract

The process of producing starch film using the casting method required a significant amount of time to obtain the desired film product. Therefore, this study was conducted to reduce the production time required for the starch film. The study used five varieties of starch: bengkoang starch, talas starch, glutinous rice flour, wheat flour, and MOCAF flour. The process involved homogenizing the starch and glycerol mixture utilizing a stirrer, followed by heating using a microwave and a compression process to accelerate the evaporation of water in the starch film. For the final drying stage, samples that had gone through this process were dried using a cabinet dryer. The result showed that the developed method of starch film requires only 60 minutes of the time needed compared to conventional casting method, which usually takes 5-48 hours. Furthermore, it was observed that starch film production using glutinous rice flour resulted in the highest tensile strength.
Characterization of alkali-activated chrysopogon zizanioides natural fibers as reinforcement for energy-efficient biocomposite applications Sari, Nasmi Herlina; Sujita, Sujita; Syafri, Edi; Suteja, Suteja
Mechanical Engineering for Society and Industry Vol. 5 No. 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.14133

Abstract

This study examines the characteristics of alkali-activated Chrysopogon zizanioides natural fibers (CZFs) to determine their applicability as reinforcements in energy-efficient biocomposite applications. Unlike earlier research, which has mostly focused on conventional natural fibers, this paper proposes CZFs as a fresh, sustainable reinforcing possibility. The study investigates the impact of different levels of NaOH (1%, 3%, and 5%) on fiber structure and functionality, offering new insights into optimizing alkali activation for improved interfacial bonding and strength in biocomposites. The results show that alkaline treatment significantly influenced the structural and functional properties of the fibers. X-ray diffraction (XRD) analysis revealed an increase in crystallinity index from 36.17% in untreated fibers to 65.74% in those treated with 5% NaOH, indicating significant removal of amorphous components. FTIR spectra confirmed the reduction of non-cellulosic functional groups, while TGA/DTA analysis demonstrated improved thermal resistance, with a maximum char residue of 4.46% at 600 °C. Mechanical tests showed tensile strength increased from 252 ± 25 MPa to 553 ± 26 MPa and elongation from 4.1% to 5.8%, while SEM analysis revealed cleaner, rougher surfaces that promote fiber–matrix bonding. Additionally, fiber density rose from from 410 ± 20 to 980 ± 20 Kg/m³, and moisture content declined from 8.9% to 5.3%, reflecting improved dimensional stability. Among all treatments, the 5% NaOH-treated fibers offered the most optimal combination of structural, thermal, and interfacial performance. These results indicate that alkali-modified CZFs are promising candidates for use in energy-efficient biocomposites, particularly for lightweight structural components, automotive panels, and sustainable packaging requiring thermal durability and high stiffness.
Co-Authors . HUSNAIN Aflizar, . Anas, Irwan Anwar Kasim Azharman, Zefri Chaniago , Irawati Damanhuri Daud Damanhuri Daud Damanik, Annisa Purnamasari Elfina, Sri Firman Ridwan Hendra Alfi, Hendra Ichiura, Hideaki Idowu, Alarima Cornelius Irawati Chaniago Jamaluddin Jamaluddin M. Arifin Masunaga, Tsugiyuki Munjiatun Munjiatun, Munjiatun Muzakir, . Nasmi Herlina Sari Pratiwi, Nanda Audia R, Benny Warman Rehani rehani Rezekinta, Angelina Rezekinta, Fransiska Angelina Rildiwan, Rildiwan Roni Afrizal Sandra Melly Sembiring, Rinawati Sitanggang, Andreas Sujita, Sujita Suteja Suteja Suteja, Suteja Tamrin, Muhammad Isnando Usman Usman Zalkhairi, Zalkhairi Zulfakri