Renewable route to bioplasticizers: kinetic insights into epoxidation of sunflower oil with in situ generated peroxyacetic acid

Purwanto, Edy and Widianto, Aloisiyus Yuli and Fransiscus, Yunus and Agustriyanto, Rudy (2025) Renewable route to bioplasticizers: kinetic insights into epoxidation of sunflower oil with in situ generated peroxyacetic acid. In: The 7th International Conference on Natural Resources and Technology (ICONART 2025), IOP Conference Series: Earth and Environmental Science, Volume 1563, 28 Agustus 2025, Medan.

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Abstract

Owing to its high amount of double bonds in fatty acid content, sunflower oil is a potential renewable feedstock for bioplasticizer applications. Although the epoxidation of vegetable oils has been extensively investigated, sunflower oil epoxidation utilizing peroxyacetic acid generated in situ, in terms of kinetics studies, is still limited, particularly in determining the reaction kinetics and indispensable factors for epoxidation using peroxyacetic acid. This study specifically investigated the kinetics of sunflower oil epoxidation using in situproduced peroxyacetic acid in an acid catalyst of sulfuric acid. This work explored how variations in reaction time, temperature, and the molar ratio of unsaturated bonds to hydrogen peroxide impact the epoxidation reaction. In addition, this work developed a kinetic model and quantified key parameters of the reaction rate constant and activation energy. Findings indicated that reaction time, temperature, and reactant molar ratio strongly affected the iodine and oxirane conversion. While elevated extended reaction times and temperatures enhance oxirane conversion at the outset, moderate conditions promote side reactions that diminish the efficiency of the epoxidation process. The optimum epoxidation conditions were identified as a reaction time of 4 hours, a temperature of 60 °C, and an unsaturated bond-to-hydrogen peroxide molar ratio of 1:2.0, which yielded the maximum oxirane content. With a reaction rate constant of 8.1–16.8 × 10⁻⁶ L/mol·s and an activation energy of 22.0 kJ/mol, the study provides key guidance for improving sunflower oil epoxidation toward sustainable bioplasticizer applications.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	renewable route, kinetic, epoxidation, sun flower, peroxyacetic acid
Subjects:	Q Science > QD Chemistry T Technology > TP Chemical technology
Divisions:	Faculty of Engineering > Department of Chemical Engineering
Depositing User:	Aloysius Yuli W, 61141
Date Deposited:	10 Dec 2025 05:38
Last Modified:	10 Dec 2025 05:38
URI:	http://repository.ubaya.ac.id/id/eprint/49944

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