Zakwan AN, Nazrah Hirzin RSF. Comparative Study on Optimization of Factors Affecting Epoxidation-Hydroxylation Reaction for The Production of Waste Cooking Oil Based-Polyol. SRJ [Internet]. 2022 Sep. 9 [cited 2024 Nov. 21];19(2):1-22. Available from: https://journal.uitm.edu.my/ojs/index.php/SRJ/article/view/3280