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Physical aging of bisphenol A polycarbonate
Author(s) -
Orreindy S.,
Rincón G. A.
Publication year - 1999
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/(sici)1097-4628(19991114)74:7<1646::aid-app5>3.0.co;2-i
Subject(s) - polycarbonate , differential scanning calorimetry , bisphenol a , enthalpy , glass transition , materials science , calorimetry , bisphenol , polymer chemistry , polymer , composite material , thermodynamics , epoxy , physics
The physical aging of bisphenol A polycarbonate was studied using the differential scanning calorimetry technique. Cowie and Ferguson's model and Williams‐Watts function were used to analyze the data. It is confirmed that the relation Δ H ∞ ( T a ) = Δ C p ( T g − T a ), where ΔH ∞ ( T a ) is the value of the aging enthalpy for t = ∞, T a the aging temperature, and Δ C p the difference in the specific heat above and below the glass transition temperature ( T g ), can be used to study quantitatively the physical aging of bisphenol A polycarbonate. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 1646–1648, 1999