Conformational structure of bisphenol A polycarbonate studied by infra-red spectroscopy
作者： P Schmidt , J Dybal , E Turska , A Kulczycki , None
DOI: 10.1016/0032-3861(91)90377-U
关键词: Materials science 、 Polymer chemistry 、 Carbonate 、 Enthalpy 、 Amorphous solid 、 Diphenyl carbonate 、 Physical chemistry 、 Bisphenol-A-polycarbonate 、 Polycarbonate 、 Chloroform 、 Spectral line
摘要: Abstract Infra-red spectra of amorphous and partly crystalline bisphenol A polycarbonate were measured. Based on the temperature dependences infra-red its model compound, diphenyl carbonate, bands sensitive to transitions between trans-trans trans-cis conformations carbonate group determined. Using spectral data obtained for solution in chloroform, enthalpy change ΔH transition was estimated be ∼0.5 kcal mol −1 . solid suggest that interchain forces state stabilize less favoured conformation group, most probably structure.
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