Waste Vegetable Oils as Sustainable Raw Materials for the Synthesis of Non-Isocyanate Polyurethanes
발표자
()
초록
내용
We have developed a green and sustainable procedure for making non-isocyanate polyurethane (NIPU) from waste biomass resource. Accordingly, epoxidized waste soybean oil (EWSBO) was prepared using amberlite IR 120 as a catalyst. The resultant EWSBO was subsequently reacted with CO2 under various conditions using tetrabutylammonium bromide as a phase transfer catalyst to generate the cyclic carbonate derivative, carbonated waste soybean oil (CWSBO). The yield of CWSBO was 99.6% when the CO2 pressure was 5.7 MPa. Finally, the desired non-isocyanate polyurethanes were achieved by reacting CWSBO with various diamines. In particular, NIPU synthesized using 1,2-diaminoethane has a high gel content and exhibit excellent tensile strength (14.4 MPa), high thermal stability and chemical resistance, and fast curing (420 min at 60 °C) which is expected as a promising alternative to commonly used polyurethane for a wide variety of applications.