A. R. . Rahmat, W. N. . Wan Tajulruddin, . Z. A. . Mohd Yusof, and . A. . Fakhari, “Characterization of Polyol Synthesized from Epoxidized Palm Oil Using Fourier Transform Infra-Red and Nuclear Magnetic Resonance”, J. Adv. Res. Appl. Mech. , vol. 10, no. 1, pp. 30–35, Oct. 2020.