Infusion Behavior of Poly (Ethylene Terephthalate) Filaments Spun At Different Take-Up Speeds
Abstract: Infusion behavior and structural development of partially and low oriented PET filaments drawn at different draw ratio in ethanol were investigated. Partially oriented filament showed only trace of multiple necks effect on the filament surface, however low oriented filament formed multiple necks on the filament. Both filaments showed a great change in natural draw ratio in the stress-strain curve. Ethanol infusion was measured with differential scanning calorimetry and thermogravimetric analysis. Ethanol infusion was poor and dye infusion was not detected in partially oriented filament, whereas low oriented filament showed efficient ethanol infusion and even at room temperature dyeing of low oriented filament was possible. Comparative to low oriented filament, crystalline reflection was less distinct in case of partially oriented filament. Cyrstalline behavior of filament was measured with wide-angle X-ray diffractometer. Low oriented filament showed scattering intensity at the equatorial axis which was analyzed from small angle X-ray scattering (SAXS) patterns.