Polymaleimide (PMAI) was synthesized by reacting polymaleic anhydride (PMA) with urea via a solvent-free reaction at 180 °C. The conversion of PMA could reach 95%. This method is simple, practical and environmentally-friendly. The structure of the resulting PMAI was characterized by ¹H-NMR and IR.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6259670 | PMC |
| http://dx.doi.org/10.3390/molecules16031981 | DOI Listing |
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