UNIAXIAL ORIENTATIONAL DEFORMATION INFLUENCE ON CRYSTALLIZATION KINETICS OF FLEXIBLE-CATENARY LINEAR POLYMERS
Gasparyan Roland Abramovich, Belyaev Valentin Mikhailovich, Boborykina Ekaterina Nikolaevna, Mashkov Yurii Aleksandrovich
Saint Petersburg State Polytechnical University
Abstract. The authors explored the influence of uniaxial orientational deformation on the kinetics of micro-two-phase fibrillar crystalline transition in linear flexible-catenary polymers. It is shown that the crystallization kinetics of the uniaxially oriented melt of a linear flexible-catenary polymer can be described by Avraami equation assuming that the index n in phase transition process is reduced from n=2 to n=0. At the high speed of the initial linear growth q 1 along fibril axis the index n in Avraami equation goes to zero during the early stages of crystallization.
Key words and phrases: полимеры, гибкоцепные полимеры, плавление полимеров, фазовые переходы, кристаллизация, энтропия, polymers, flexible-catenary polymers, melting of polymers, phase transitions, crystallization, entropy
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