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Abstract:
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Historically, the criteria for selecting an ideal sizing agent have been low cost,
abrasion resistance, film formation, and adhesion to fiber. However, the development of
new sizing agents should not be limited to these characteristics alone. It was hypothesized
that ionic liquids could be used as a sizing agent because ionic liquids are excellent
lubricants. Previous research has shown that ionic liquids have friction reduction and
anti-wear performance on metal and ceramic surfaces. Ionic liquid technology is rapidly
emerging, and no known information is available regarding their use as a sizing agent.
Therefore, this research determined the effect of ionic liquids on yarn physical properties.
This investigation was carried out using a 40s 100% cotton ring spun yarn and
three different ionic liquids including acetylcholine docusate, I-butyl-3-
methylimidazolium chloride, and I-butylpyridinium bromide. For comparison purposes
starch, PV A, and a starchIPV A blend were applied to the same yarn to compare the
physical properties of the sized yarn. The yarn physical properties analyzed included
tensile strength, elongation, modulus, hairiness, and abrasion resistance. Also, ionic
liquid desizing methods were conducted and the effectiveness of each method was
determined.
The results showed that [bmim t cr and [bupy t Br - increased yarn elongation
and acetylcholine docusate reduced yarn hairiness. The effect of each ionic liquid on the
sized yarn physical properties depended on the conditions used to apply the ionic liquid
to the yam. Also, the results of the ionic liquid desizing evaluation showed that these
ionic liquids can be removed from the yarn with water even at room temperature.
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