PREPERATION AND CHARACTERIZATION OF PP-PET ISLANDS IN THE SEA TYPE BICOMPONENT AS-SPUN FIBERS BY HIGH-SPEED MELT SPINNING

摘要

In this study, to investigate characteristic fiber deformation behaviors in high-speed melt spinning process of islands in the sea type bicomponent fiber, highspeed melt spinning for PP-PET islands in the sea type bicomponent fiber was conducted up to 7 km/min. Overall diameter profiles from nozzle to winder for single- and bicomponent fibers could be obtained through on-line measurement of diameter. Structure evolution of obtained as-spun fibers was systematically investigated by using 2D WAXD, DSC, birefringence, and tensile test etc.