Synthesis and Thermal Characterization of Polyurethanes Obtained from Cottonseed and Corn Oil-Based Polyols


Karina Cruz-Aldaco1, Erika Flores-Loyola2, Cristóbal Noé Aguilar-González1, Nuria Burgos3 and Alfonso Jiménez3*

1 Food Research Department, School of Chemistry, Autonomous University of Coahuila, Blvd. Venustiano Carranza S/N Col. República Oriente, 25280, Saltillo, Coahuila, Mexico
2 School of Biological Sciences, Autonomous University of Coahuila, Carretera Torreón-Matamoros Km 7.5 Ciudad Universitaria Torreon, Coahuila, Mexico, C.P.27000, Torreón, Coahuila, Mexico
3 Analytical Chemistry, Nutrition and Food Sciences Department, University of Alicante, Campus San Vicente, E 03690, San Vicente del Raspeig, Alicante, Spain


The use of vegetable oils to replace fossil feedstock has become an area of opportunity and a priority for study in the field of polymer science. Vegetable oils are considered as renewable resources with high potential, low cost and full availability. The aim of this study is the synthesis of biobased polyols from cottonseed oil (Gossypium barbadanse) and corn oil (Zea mays) as feedstock. Their synthesis was successfully performed, as can be concluded from the determination of their hydroxyl index as well as the structural and thermal characterization carried out in this work. Polyurethanes from biobased polyols were synthesized with two different isocyanates (HDI and MDI) and variable polyol/isocyanate ratio and they were further characterized by infrared spectroscopy, thermogravimetric analysis, differential scanning calorimetry and scanning electron microscopy, concluding that cottonseed and corn oils could be considered as valid alternatives for the synthesis of biobased polymeric materials.