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Abstract:
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The mechanical properties of a textile fibers are
highly important, contributing both to the behavior of
fibers in processing and to the properties of the final
product. These fiber properties combine to determine the
potential performance of the fiber during yarn manufacturing
and fabric formation.
Fiber modulus is one property that is beleived to
contribute largely to resisting the forces of spinning and
weaving, thus providing a potential for significant
improvements in processing performance. This thesis was
undertaken to determine the effects of polyester fiber
modulus on processing performance and yarn quality.
High and low modulus polyester fibers at various
deniers were spun into ring spun and open end yarns. Two
different yarn blends, a 100% polyester and a 50/50 PIC,
were spun into a 30/1 Ne. Various test were performed to
determine processing performance. Once spun, numerous yarn
test were run on each condition to determine yarn quality.
Potential weavability was performed on the Ruti Webtester.
In-process test concluded that low modulus fibers
required less friction to pull the fibers apart according to
the Rotor Ring cohesion test. The results of yarn testing indicated that high modulus
fibers increased ring spun yarn strength. Also, yarns
produced from low modulus fibers increased major defects,
ring spun classimat minor defects, and open end yarn
hairiness. Finally, open end high modulus yarns performed
significantly better than open end low modulus yarns on the
Ruti Webtester. The Webtester is an indicator of potential
weavability because it simulates the forces of weaving.
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