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Ester‐carbonate interchange reaction in the solid state: synthesis of poly(ester‐carbonate)
Author(s) -
Hait S. B.,
Sivaram S.
Publication year - 1998
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19981201)199:12<2689::aid-macp2689>3.0.co;2-f
Subject(s) - carbonate , polymer chemistry , copolymer , aryl , ethylene carbonate , oligomer , trimethylene carbonate , polymerization , chemistry , materials science , polymer , organic chemistry , alkyl , electrode , electrolyte
Poly(ethylene terephthalate‐ co ‐bisphenol A carbonate) was synthesized by ester‐carbonate interchange reaction in the solid state. The polymerization reaction was carried out by heating two chemically distinct oligomers, namely, poly(aryl carbonate) and poly(ethylene terephthalate) in the temperature range of 180–230°C, during which period both chain extension as well as interchange reactions occurred. A copolymer of η inh = 0.84 dL/g was obtained. With the progress of the interchange reaction the T g of the copolymer slowly increases and reaches a maximum value of 102°C. The oligomer mixture, which exhibits initially two distinct T m 's, shows a single T m at the end of the reaction. Formation of copoly(aryl ester‐carbonate)s by an ester‐carbonate interchange reaction was also found in the solid state at temperatures below 230°C. High molecular weight poly(aryl ester‐carbonate)s with a T g = 163°C and η inh = 0.52 dL/g were prepared from the corresponding low molecular weight oligomers of poly(aryl ester) and poly(aryl carbonate)s.