Influence of Functionality and Aromatic Content of Polyester Polyol on Rigid Polyurethane Foam Properties - Yenen, Eren; Arı, Gülşen Albayrak; Arslan, Merve; Ünlü, Kerim Can; Güney, Serpil Yılmaztürk; Deligöz, Hüseyin (Polymer engineering and science, 2025)