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Abstract
For the last 50 years, the prediction of monomer reactivity ratios has been based on the Alfrey-Price Q-e Scheme, despite its theoretical weaknesses and its relatively low level of accuracy. The Patterns of Reactivity Scheme, in its revised form, is much more accurate and applies to transfer reactions, as well as to copolymerization. It is now shown that it can be formulated more generally than previously and, with respect to the Alternating Tendency, it is found to provide a good correlation with experimental results.
ACKNOWLEDGEMENT
Dr. Cheves T. Walling has kindly provided wise criticism of the Revised Patterns Scheme, and indeed was responsible both for deriving Equation Equation21 and for suggesting the general formulation. His counsel is greatly appreciated, he was a pioneer of radical polymerization in the 1940s and he continues to contribute to its advancement today.
