Kawkumpa, S., Saisema, T., Seoob, O., Trakankit, C., Atorngitjawat, P. and Sakulsaknimitr, W. 2019. Synthesis of polyurethane from glycolysis product of PET using ZnO as catalyst. RMUTSB ACADEMIC JOURNAL. 7, 1 (Jun. 2019), 29–39.