Self-crimped bicomponent fibers containing polypropylene/ethylene octene copolymer

摘要

Melt spinning of side-by-side bicomponent fibers, containing ethylene octene copolymer (EOC) and polypropylene (PP) was conducted to investigate effects of composition ratios and fiber draw ratios on fiber crimp characteristics. The obtained EOC/PP bicomponent fibers exhibited self-crimping with different degree of crimpness when were fully stretched. Fiber crimpness tended to increase with increasing EOC content (up to 50%), but decreased with fiber draw ratio. Fibers of 50/50 EOC/PP ratio possessed highest fiber crimpness with regard to crimp length and extensibility. Self-crimping behavior was explained to yield from imbalance force, as a result of difference in elasticity and orientation, between EOC and PP phases.