Abstract:

Nylon 6 films were prepared by means of quenching after isothermal crystallization and annealing. The crystallization behavior of the nylon 6 films was investigated via X\|ray diffraction. When the temperature was higher than 443 K isothermal crystallization and the temperature was higher than 473 K for annealing of nylon 6, a high temperature crystallization peak appears at 2θ=28.5°. The intensity of high temperature crystallization peak depends on the thermal history of the film. If the films were cooled in air after isothermal crystallization and annealing, no high temperature crystallization peak exists. The possible causes of the high temperature crystallization peak were analyzed based on the experiment results.

Key words: nylon 6; , X-ray diffraction; , high temperature crystallization peak