Abstract
The maximum conversion of an intramolecular reaction between neighboring substituents on specially-designed alternating copolymers was calculated theoretically. The terpolymer of monomers A, D1, and D2, were supposed to consist of two alternating units, A–D1 and A–D2, distributed in a certain statistical state. In such a modified alternating copolymer, substituent X on unit A was permitted to perform the intramolecular reaction only with substituent Y1 on unit D1, not with Y2 on D2. As a result, the theoretical maximum conversion could be expressed as a function of a mole fraction of A–D1. If these alternating units were arranged as alternatively as possible, the best conversion near to 100% could be achieved over a wide range of the A–D1 fraction. Even if the arrangement was random, a considerably good conversion beyond 86.5% could still be expected. However, the blocky arrangement resulted in limiting the yield to 86.5% (Flory’s limit) which was equal to the statistically possible level in the simple alternating copolymer of A and D1.
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Hirabayashi, T., Yokota, K. Intramolecular Reaction between Neighboring Substituents of Specially-Designed Alternating Copolymers. Polym J 13, 51–56 (1981). https://doi.org/10.1295/polymj.13.51
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DOI: https://doi.org/10.1295/polymj.13.51
