Abstract
Investigations on the mechanistic aspects of the coordination-insertion polymerization of six-membered cyclic carbonate 5,5-dimethyl-1,3-dioxan-2-one (DTC) initiated by tin(II) alkoxide-based catalysts are presented. 1H NMR and MALDI-TOF mass spectrometric analyses of the DTC polymerization products revealed that predominantly macrocyclic oligocarbonates are formed in the presence of a stannane catalyst. It was found that the addition of a small amount of water or diol suppresses the macrocyclization and linear polycarbonates can be obtained. The plausible mechanism of macrocyclization and linear product formation is proposed and discussed.
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Rokicki, G., Piotrowska, A. & Pawlowski, P. Macrocyclic vs. Linear Polymer Formation in the Coordination- Insertion Polymerization of Cyclic Carbonates. Polym J 35, 133–140 (2003). https://doi.org/10.1295/polymj.35.133
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DOI: https://doi.org/10.1295/polymj.35.133