Abstract
Warp and weft knitted fabrics comprising polyethylene terephthalate/Co-PET sea-island bicomponent fibers were fabricated in this study. The knitted fabrics were treated in alkali solution to develop knitted fabrics composed of nano-scale filaments. The structural change and water transport behavior of the alkali-treated knitted fabrics were then compared. Results revealed that the filament diameters decreased from 20 µm to 850 nm after alkali treatment. The porosities of warp and weft knitted fabrics decreased by 4.8 % and 10.1 %, respectively, whereas their area densities increased by 68.8 % and 67.2 %, respectively. The wicking height and wicking rate of both types of fabric composed of microfilaments increased with prolonged alkali-treatment time. However, the water absorption properties such as absorption capacity and absorption rate of the knitted fabrics composed of nano-scale filaments significantly increased because of their low porosity and high area density.
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