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Abstract:
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Advances in fiber spinning technology have introduced new filament yam
products in recent years. These products are the result of advancements in mass
coloration techniques. To solution dye polyester, pigments must be introduced into the
melt during the fiber-forming process. Color becomes an integral component before fiber
is formed. This method produces exceptional colorfastness compared to conventional
dyeing methods. However, when color is added in this manner, the pigment particles not
only give the fiber color, but also affect other properties. Previous research has shown
that pigmented fibers exhibit differences in structure of crystals, orientation in amorphous
regions, and tensile properties compared to pure polyester fiber without pigmentation.
Problems associated with fiber-to-metal friction have become a major concern for
knitters of fine-denier, solution-dyed carbon black PET. Warp knitters have expressed an
interest in using these new fibers in the production of lightweight colored fabrics, but
have been restricted to pastel colors that exhibit less friction than darker colored yams.
This research has added to the understanding ofthe filament morphology and
properties of partially oriented and fully drawn carbon black yams. This research
determined the similarities and differences among different levels of carbon black
pigment, spin finish type, and cross section. The similarities and differences among the
filaments were explained according to the resultant morphological and physical
properties of the different filament types.
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