Anionic ring-opening polymerization of cyclic 1,3-dithiocarbonate and thermal depolymerization
作者： Su Jin Jeon , Min-young Jung , Jung Yun Do
DOI: 10.1016/J.REACTFUNCTPOLYM.2016.01.005
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摘要: Abstract A new anionic ring-opening polymerization (ROP) was used to synthesize polydithiocarbonates from cyclic dithiocarbonates. The optimized in the presence of dibenzo-18-C-6 and NaH/EtOH, carried out at 50 °C suppress any retropolymerization. Six- seven-membered dithiocarbonates underwent ROP afford corresponding polymers. Thermal depolymerization prepared polymers generated a dimer, which found be back-biting mechanism according 1H nuclear magnetic resonance (NMR) spectroscopy. characteristic structure linear polymer defined by NMR 13C spectroscopy, compared with monomer. 80 °C exhibited formation contaminated dimer. analysis differential scanning calorimetry thermogravimetric revealed melting process 85–110 °C thermal instability accompanying 5% weight loss 150–230 °C.
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