Prediction of glass transition temperatures: Binary blends and copolymers

Glass transition temperature Tg values characterize pure polymers, polymer blends, copolymers, as well as matrices in polymer-based composites. Tgs as function of composition reflect miscibility (or lack of it) and determine all properties. We present a new equation for the dependence of Tg on composition in blends as well as in copolymers. We compare results obtained from earlier equations (Fox, Gordon–Taylor, Kwei) and those from the new equation with experimental data. © 2008 Elsevier B.V. All rights reserved.