Bio-based Polyurethane Derived from Carbon Dioxide and Epoxidized Soybean Oil

The synthesis of polyurethane relies on a toxic and petroleum-based isocyanate reactant. aim this research was to synthesize Polyurethane using environment-benign renewable starting materials such as carbon dioxide soybean oil. carbonated oil first prepared from (CO2) epoxidized (ESBO) zinc glutarate (ZnGA) catalyst but the result FTIR indicated absence peak cyclic carbonate around 1800 cm-1. Therefore, in work, modified A. Lee (Lee & Deng, 2015) tetramethylammonium bromide (TBAB) catalyst. as-synthesized (CSBO) allowed react with two types substances, 3-aminopropyltriethoxysilane or diethylenetriamine molar ratios carbonate:NH2 1:1 THF DMF solvents obtain Polyurethanes (U1THF, U1DMF, U2THF, U2DMF). After 3 hours lignin solution added form film. Raman spectra confirmed removal CSBO. showed cm-1 assigned CSBO, new urethane linkage 1700 (C=O stretching) Polyurethanes. conversion epoxide also by 1H-NMR. Upon adding into Polyurethanes, lignin-urethane U1THF, U1DMF formed films whereas U2DMF viscous liquids. In terms applications, all four formulations can be potentially applied bioadhesives.