TY - JOUR
T1 - Molecular thermodynamic model for solvent-induced glass transitions in polymer-supercritical fluid systems
AU - Kalospiros, Nikolaos S.
AU - Paulaitis, Michael E.
N1 - Funding Information:
Acknowledgments-We gratefully acknowledge many valuable discussions with Professor Gianni Astarita on the concept of order parameters or internal sta e variables that led us to apply this approach to molccu ar thermodynamic models. Financial support for this work ! as provided by the National Science Foundation (CPE 8351b28) and the follow- ing sponsors: Air Products and Chemical Company, E. I. du Pont de Nemours and Company, Dow Chemical Company Foundation, Exxon Education Foundation, Imperial Chemical Industries, Merck and Company, and Procter and Gamble Company.
PY - 1994
Y1 - 1994
N2 - A molecular thermodynamic approach is described for predicting polymer glass transition temperatures as a function of the amount of gas sorbed by the polymer. The predictive model is based on a lattice theory of polymer solutions and the concept of order parameters, the use of which has been important in the development of macroscopic models and phenomenological analyses of glass transitions. A general definition of the solvent-induced glass transition is given, and then applied within the framework of this lattice model and its order parameters to predict glass transition temperatures for several polymer-compressed CO2 mixtures. The model is also used to examine a new experimental observation described as retrograde vitrification.
AB - A molecular thermodynamic approach is described for predicting polymer glass transition temperatures as a function of the amount of gas sorbed by the polymer. The predictive model is based on a lattice theory of polymer solutions and the concept of order parameters, the use of which has been important in the development of macroscopic models and phenomenological analyses of glass transitions. A general definition of the solvent-induced glass transition is given, and then applied within the framework of this lattice model and its order parameters to predict glass transition temperatures for several polymer-compressed CO2 mixtures. The model is also used to examine a new experimental observation described as retrograde vitrification.
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U2 - 10.1016/0009-2509(94)85012-7
DO - 10.1016/0009-2509(94)85012-7
M3 - Article
AN - SCOPUS:0028388987
SN - 0009-2509
VL - 49
SP - 659
EP - 668
JO - Chemical Engineering Science
JF - Chemical Engineering Science
IS - 5
ER -