Isothermal crystallization of copolyamides. I. Kinetics of crystallization of nylon 6–piperazine adipate and nylon 6–piperazine terephthalate random copolyamides

摘要

AbstractThe kinetics of primary crystallization from the melt of nylon 6–piperazine adipate and nylon 6–piperazine terephthalate copolyamides were measured dilatometrically. It was found that the crystallization rate of the samples under investigation decreases with increase in the percentage comonomer content and rigidity of molecules over the entire temperature range investigated. The Avrami exponentnvaried with temperature, values being from 2 t