The Production of Polyurethane from Waste Vegetable Oil-Based Polyols and Modelling of Rheological Properties. Periodicals of Engineering and Natural Sciences, [S. l.], v. 5, n. 1, 2017. DOI: 10.21533/pen.v5.i1.1978. Disponível em: https://pen.ius.edu.ba/index.php/pen/article/view/1978. Acesso em: 17 jun. 2026.