Hydrolysis of polyurea under high pressure of carbon dioxide
Polymer Bulletin(2016)
摘要
A chemical decomposition of polyurea (PUA) by hydrolysis under high pressure of carbon dioxide (CO 2 ) was proposed. The hydrolysis of PUA was carried out at 190 °C for 2 h under 7.0 MPa of CO 2 in the presence of water. The hydrolysis reaction gave white residual solid and water soluble compound. The white residual solid was characterized to be degraded PUA by FT-IR spectrum and elemental analysis. 1 H-NMR spectra of the water soluble compound revealed that the hydrolysis of PUA produced diamine only from repeating unit of PUA, which was a component of PUA. This hydrolysis gave the corresponding diamine for quantitative yields.
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关键词
Hydrolysis reaction,Carbonic acid,Carbon dioxide,Sustainable chemistry
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