Bio-derived polyurethanes obtained by non-isocyanate route using polyol-based bis(cyclic carbonate)s—studies on thermal decomposition behavior

Abstract Non-isocyanate polyurethanes (NIPUs) constitute one of the most prospective groups eco-friendly materials based on their phosgene-free synthesis pathway. Moreover, steps obtaining includes use carbon dioxide (CO 2 ), which allows for promotion development capture and storage technologies. In this work, non-isocyanate were obtained via three-step pathway with epichlorohydrin. I step, addition reaction epichlorohydrin polyhydric alcohols was conducted diglicydyl ethers obtaining. II step reacted to obtain five-membered bis (cyclic carbonate)s in cycloaddition reaction. Then, one-pot polyaddition between carbonate) dimerized fatty acids-based diamine allowed (NIPU)s preparation. Three bio-based (two semi-products bio-NIPU) three petrochemical-based NIPU) obtained. The selected properties products each NIPUs preparation compared. Fourier transform infrared spectroscopy FTIR proton nuclear magnetic resonance 1 H NMR measurements verify chemical structure all products. average molecular masses measured size exclusion chromatography SEC. thermal stability degradation kinetics determined thermogravimetric analysis TGA. results confirmed that activation energy decomposition lower prepared than counterparts.