Synthesis of sustainable non-isocyanate polyurethanes from waste vegetable oils
발표자
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초록
내용
A series of non-isocyanate polyurethane (NIPU) has been synthesized using waste soybean oil-based precursors as alternatives to the hazardous phosgene-based isocyanates. The epoxidized waste soybean oils (EWSBO) were synthesized using Amberlite IR 120 catalyst, then the carbonated waste soybean oils (CWSBO) were synthesized using CO2 and tetrabutylammonium bromide catalysts. Thermal plastic NIPUs were produced by reacting CWSBO with various diamines, showing excellent tensile strength up to 54.2 MPa. high termal stability, and chemical resistance. Additionally, NIPU foams were also successfully synthesized and their properties such as apparent density, compressive strength, and thermal conductivity were investigated. The NIPUs produced in this study are promising alternatives to conventional polyurethane for a wide variety of applications.