Commentary on Flory’s Theory on Strain-induced Crystallization

Abstract

In this article, Flory’s theory on strain-induced crystallization of network polymer (published in 1947) is explained in an easy-to-understand manner. Regarding the derivation of mathematical formulas, their physical meanings are supplemented. When Flory’s explanations are interpreted, differences between 1940s and present days in knowledge about polymer crystals are considered. Some problems about the results of numerical calculations based on the theory are pointed out.