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Study of exchange reaction in polycarbonate‐modified polybenzoxazine via model compound
Author(s) -
Ishida Hatsuo,
Lee YuHsin
Publication year - 2001
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.2311
Subject(s) - polycarbonate , differential scanning calorimetry , polymer chemistry , materials science , transesterification , polymer , polymerization , thermal decomposition , thermal stability , chemistry , organic chemistry , composite material , catalysis , physics , thermodynamics
The chain fragmentation in polycarbonate (PC) and polybenzoxazine blend upon thermal polymerization is investigated by size exclusion chromatography with the aid of monofunctional benzoxazine model compound. Molecular weight reduction of PC polymer via transesterification between the hydroxyl groups of ring‐opened benzoxazine and the carbonate groups from PC was observed. In addition, excess heat of reaction compared to the expected value is detected from differential scanning calorimetry and is assigned to the exotherm associated with the exchange reaction. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 1848–1855, 2002