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Crosslinked poly(hydroxyurethane) films from biobased carbonates: Structure-pro...

In this work, crosslinked poly(hydroxyurethane) (PHU) films were prepared by the reaction of biobased cyclic carbonates (BisCC), with different chain lengths, with hyperbranched poly(ethyleneimine) (PEI) under amenable conditions and in the absence of catalysts. Fourier transform infrared (FTIR) spectroscopy revealed that the carbonate groups were completely consumed in the crosslinking reaction and the gel con...