Polymers, kinetic modeling chemical correlators

In the final chapter "Principles of Statistical Chemistry as Applied to Kinetic Modeling of Polymer Obtaining Processes" by Semion Kuchanov (Lomonosov Moscow State University, Moscow, Russia), the contemporary problems of bridging models of micro- and macrostructure are discussed. The hierarchical analysis of chemical correlation functions (so-called chemical correlators) is a subject of the author s special interest. These problems are presented conceptually stressing that the problem of crucial importance is revealing the relation between the process mode and the chemical structure of polymer products obtained. 

A. Letton (Dow Chemical Company, Freeport, Texas) You said that the percent densification may be used as a measure of physical aging. It seems to me, based on the model of Kovacs et al. [A.J. Kovacs, J.J. Aklonis, J.M. Hutchinson, and A.R. Ramos, J. Polym. Sci., Polym. Phys. Ed., 17,1097-1162 (1979)] and some of the other models U.S. Chow, Macromolecules, 17, 2336-2340 (1984) R.R. Lagasse and J.G. Curro, Macromolecules, 15,1559-1561 (1982)], that you shouldn t be looking at percent densification as a direct correlation, but rather at the kinetics of the change in the relative volume parameter, the delta parameter that they use. I m wondering if you looked at that test to correlate it with physical aging ... 

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