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All Journal G-Tech : Jurnal Teknologi Terapan Indonesian Community Journal Journal of Mechanical and Electrical Technology JANUR
Luchyto Chandra Permadi Permadi
Universitas Islam Raden Rahmat
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Public Health Social Sciences Other

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Sustainable Analysis of Calophyllum Inophyllum Oil for Eco-Friendly Green Lubricants as an Alternative to Mineral Oils Kiki Darmawan; Novan Habiburrohman; Mudrikah Mudrikah; Mohammad Na’im Humam; Bagus Sriwijaya; Luchyto Chandra Permadi; Farisan Robbani; Mojibur Rohman
G-Tech: Jurnal Teknologi Terapan Vol 10 No 1 (2026): G-Tech, Vol. 10 No. 1 January 2026
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v10i1.8231

Abstract

Calophyllum Inophyllum (nyamplung) Oil is recognized as a promising non-edible vegetable oil for the development of sustainable green energy lubricants. This study aims to improve the physicochemical characteristics of nyamplung oil through a two-step transesterification followed by esterification using trimethylolpropane (TMP), and to assess its tribological performance. The refined oil exhibited a flash point of 212 °C (ASTM D92) and a pour point of 8 °C (ASTM D97), indicating excellent thermal and flow stability. The kinematic viscosity was 38.3 cSt (ASTM D445) and the density 0.88 g/cm³ (ASTM D4052), both within industrial lubricant standards. The acid value decreased markedly from 36.5 to 1.62 mg KOH/g, while the iodine value (0.006 g I₂/100 g) and peroxide value (0.23 Meq/kg) demonstrated chemical stability. FTIR analysis confirmed the formation of ester functional groups, and GC–MS results showed a balanced distribution of saturated and unsaturated fatty acids. Overall, the modified Calophyllum Inophyllum Oil fulfills key technical criteria for eco-friendly green energy lubricants and shows strong potential as a renewable alternative to conventional mineral-based lubricants in industrial applications. Nevertheless, its crude form presents several drawbacks, including high acid and peroxide values as well as poor oxidative stability.
Co-Authors Agus Dwi Putra Agus Dwi Putra Agus Dwi Putra Ahmad Saepuddin Anisa Hudi Widaningrum Ary Kusuma Purwady Bagus Sriwijaya Bella Cornelia Tjiptady Candra Pradhana Dedi Romadon Dwi Agus Sudjimat Erlillah Rizqi Kusuma Pradani Faisol Khoufi Asshadiqi Faisol Khoufi Asshidiqi Faisol Khoufi Asshidiqi Faisol Khoufi Asshidiqi Farisan Robbani Fitriani, Indah Martha Kiki Darmawan M Rizki Chanda Mohammad Na’im Humam Mudrikah Mudrikah Muhammad Ana Zamzami Muhammad Rizal Akbar Zamzami Novan Habiburrohman Ratna Fajarwati Meditama Rifki Zainur Rahman Rifki Zainur Rahman Rohman, Mojibur Sukma Sakti Agita Hermanto Yayi Febdia Pradani Yayi Pradani Zurriat Nyndia Rahmawati