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All Journal Majalah Ilmiah MOMENTUM IJEBD (International Journal Of Entrepreneurship And Business Development) Journal of Humanities and Social Studies Journal of Science Innovare Jurnal Muara Ilmu Sosial, Humaniora, dan Seni Jurnal Muara Ilmu Ekonomi dan Bisnis Jurnal Manajemen Bisnis dan Kewirausahaan Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Jurnal Visual Journal of Applied Data Sciences Interdisciplinary Social Studies Jurnal Ilmiah Teknik Mesin Poros Mechanical Engineering for Society and Industry Automotive Experiences Makara Journal of Technology Ranah Research : Journal of Multidisciplinary Research and Development Journal of Sustainable Development and Regulatory Issues International Journal of Application on Economics and Business Advance Sustainable Science, Engineering and Technology (ASSET)
Agustinus Purna Irawan
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Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Transportation Other

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Journal : Advance Sustainable Science, Engineering and Technology (ASSET)

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Mechanical Performance of Alkali-Treated Rattan Strips with Epoxy Coating for Sustainable Composite Applications Kalatharan, Sujentheran Nair; Imran, Al Ichlas; Irawan, Agustinus Purna; Siregar, Januar Parlaungan; Cionita, Tezara; Fitriyana, Deni Fajar; Anis, Samsudin; Dewi, Rozanna; Setyoadi, Yuris; Wisnu Prayogo
Advance Sustainable Science Engineering and Technology Vol. 7 No. 3 (2025): May - July
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i3.2017

Abstract

The use of natural materials like rattan in eco-friendly composites is gaining attention in materials engineering. However, its hydrophilic nature and interaction with other materials can affect mechanical strength. This study investigates how variations in rattan size and alkali treatment influence the tensile properties of single rattan strips through an epoxy dipping process. Rattan was prepared with varying lengths (5–15 cm), widths (3–8 mm), and a consistent thickness (0.5 mm). Alkali treatment used 5% and 10% NaOH concentrations for 1 and 24 hours. Tensile testing showed that a 5 cm × 8 mm strip achieved the highest tensile strength (49.95 MPa), Young's modulus (3562.77 MPa), and low strain (5.4%), while the 15 cm × 3 mm strip had the lowest strength (9.48 MPa) and modulus (475.69 MPa) with higher strain (10.32%). A 5% NaOH treatment for 24 hours improved adhesion and performance, while 10% caused degradation.
Mechanical Properties of Epoxy Composite Reinforced with Spent Coffee Ground and Coffee Husk Etanto Heiliano Wijayanto; Imran, Al Ichlas; Siregar, Januar Parlaungan; Mohd Ruzaimi Mat Rejab; Tezara Cionita; Wisnu Prayogo; Deni Fajar Fitriyana; Rozanna Dewi; Thomas Junaedi; Agustinus Purna Irawan
Advance Sustainable Science Engineering and Technology Vol. 7 No. 4 (2025): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i4.2052

Abstract

This study aims to investigate the effect of increasing the concentration of natural filler on the mechanical properties of Spent Coffee Ground (SCG) / Coffee Husk (CH) reinforced epoxy matrix composite. The materials used in this study are epoxy resin as a matrix and waste coffee grounds and coffee husks as natural fillers with sizes of 100-mesh and concentrations of 10, 20, and 30 wt.%. The results showed that SCG 10 wt.% produced the best mechanical properties compared to the other samples based on tensile strength (19.58 MPa), tensile modulus (1.70 GPa), flexural strength (44.55 MPa), and flexural modulus (2.32 GPa). On the other hand, CH 30 wt.% contributed the highest hardness value of 50.33 HRB compared to other samples. The findings in this study prove that the appropriate composition will affect the compatibility between the filler and the matrix, thus impacting the mechanical properties of the composite. This phenomenon can be seen based on microscope analysis, which shows a strong interaction between the matrix and filler and the formation of voids and agglomeration
Co-Authors Agus Halim, Agus Ahmad Athoillah Alrasyid, Mochamad Dzaki Alvin Soesilo Aripin, Muhammad Bustanul Cionita, Tezara Clementinus Benny Agung Pambayu Danardono Agus Sumarsono Dimyati, Saeful Eddy Supriyatna Marizar Eko Reinaldo Esanov Azamat Esirgapovich Etanto Heiliano Wijayanto Fitriyana, Deni Fajar Frans Jusuf Daywin Fransisca I. R. Dewi Fransisca Iriani Roesmala Dewi Guteres, Natalino Fonseca Da Silva Handoko, Lukas Haris Maupa Hasan Tjahaya I Wayan Sukania Ichsan, Christopher Adryan Imran, Al Ichlas Ismail, Nur Hidayah Jamiluddin, Jamiluddin Jauhary, Minerva Cessilia Nafileita Junianto, Pilifus Kalatharan, Sujentheran Nair Kistiawan, Tony Kriswanto Kriswanto, Kriswanto Latumahina, Fanya Felicia Nadin Lithrone Laricha Salomon M. Agung Wibowo, M. Masdar Helmi Mohd Ruzaimi Mat Rejab Mubangaol, Boris Karlop Muchtar, Billy Muhammad Khafidh Mutiara, Maitri Widya Napoleon, Emanoelle Panie, William Dae Pranoto, Wati A. Prasetyo, Ares Yudi Puspitasari, Windy Desti Putera, Finny Pratama Rahim Awang, Abd Rifky Ismail Rozanna Dewi Rudy Rudy Sadat, Andi Muhammad Samsudin Anis Silva, Mateus De Sousa Da Siregar, Januar Parlaungan Suhartanto, Eko Supriyatna-Mz, Eddy Tezara Cionita Thomas Junaedi Tolukun, Bright Levin Tresna P. Soemardi Umran, M. Fankar Utama, Didi Widya Waworuntu, Jason Widjajalaksmi Kusumaningsih, Widjajalaksmi Wiradisuria, Irisha Kirana Wisnu Prayogo Yotenka, Rahmadi Yuris Setyoadi