Synthesis and properties of Non-isocyanate polyurethane Based on Aromatic amine

Abstract

Abstract Non-isocyanate polyurethane (NIPU) was synthesized via cyclic carbonate(DiCC), which was synthesized throguh the thiol-ene click reaction that has high selectivity and orientation, and aromatic diamine, which is one alternative for preparing conventional polyurethane without isocyanate. which as the promising materials in green and sustainable chemistry. It will replace the traditional polyurethane in the future chemical industry. A simple non-isocyanate route of synthesizing aromatic polyurethane has been studied in this paper. The chemical structures of DiCC and NIPU were characterized by fourier transform infrared spectrometer (FT-IR), 1H nuclear magnetic resonance spectra (1H NMR). The Mn and Mw of NIPU were measured up to 2964 g.mol-1 and 11528 g.mol-1 through gel permeation chromatography (GPC). Moreover, the initial decomposition temperature showing over 225°C and the shear strength reaching 2.38 MPa.