The thermal degradation mechanism and kinetic analysis of hydrogenated bisphenol-A polycarbonate

Novel decomposition of polycarbonate and effect for marine ecosystem

“…These new signals were attributed to alkanes and alkenes by scission of carbonate or isopropylidene – groups. 37,38…”

“…These new signals were attributed to alkanes and alkenes by scission of carbonate or isopropylidenegroups. 37,38 In the IR spectrum, new absorption of 3430 (-OH), 2874 (CH 3 -C-CH 3 ), 1644 (-CO-) and 1193 (-CO-) cm −1 attributed to BPA was observed. 22,24 The result indicates that PC main chain scission may occur in this condition.…”

Novel stereoisomeric lignin-derived polycarbonates: towards the creation of bisphenol polycarbonate mimics

“…Also, this process uses vast amounts of methylene chloride solvent and tends to lead to the formation of stoichiometric amounts of chlorine salts. Aside this technology, a range of alternatives were developed notably (a) melt transesterification and polycondensation of a diol with a suitable carbonate; 5,6 (b) the copolymerization of carbon dioxide (CO 2 ) with an epoxide; 7,8 (c) polymerization of suitable polyol diallyl carbonates 9 and (d) ring-opening polymerization (ROP) of cyclic carbonate monomers. 10–12…”

“…1B ). 6 Their structural analysis was performed by FT-IR ( Fig. 3A ) and NMR spectroscopy ( 1 H NMR, 13 C NMR, 2D HSQC and 2D COSY) (see ESI Note 3 † ).…”