Sizing Performance Improvement of Cotton Yarns Pretreated with UV Irradiation 


Vol. 23,  No. 11, pp. 3091-3102, Nov.  2022
10.1007/s12221-022-4400-0


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  Abstract

UV irradiation technology has the advantages of ease operation, affordable, and clean production. This paper focused on the wettability improvement of cotton yarns by UV irradiation, and proposed UV irradiation pretreatment method to improve the sizing performance of cotton yarns. The surface elemental composition and molecular structure before and after UV irradiation were characterized. The effects of UV irradiation pretreatment intensity and time on apparent properties, weight, wettability and mechanical properties of raw cotton yarns were analyzed. The impact of UV irradiation pretreatment process on sized yarns performance including mechanical properties, hairiness, yarn evenness and size pick-up were studied. Then, the mechanical properties of the sized yarns after alkali desizing were investigated. The results showed that UV irradiation pretreatment can introduce oxygen-containing polar groups on the cotton yarns. Meanwhile, it had a certain degradation effect on the surface of the cotton yarns, which resulted in wax removed, roughness improvement and exposure of cellulose. The above reasons jointly caused the wettability improvement of raw cotton yarns after UV irradiation. Compared with the unpretreated sized ones, the breaking strength, breaking elongation and abrasion resistance of the UV irradiation pretreated sized yarns was greatly enhanced by 20.13 %, 20.54 % and 103.49 % respectively. The hairiness was reduced by 88.23 %, and the yarn evenness was improved by 6.74 %. It presented the optimized sizing performance when the yarns were pretreated at UV irradiation intensity of 142.5 mW/cm2 for 120 min. After desizing, the decline amplitude was little between unpretreated and UV irradiation pretreated yarns.

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  Cite this article

[IEEE Style]

W. Yan, B. Zhu, W. Gao, "Sizing Performance Improvement of Cotton Yarns Pretreated with UV Irradiation," Fibers and Polymers, vol. 23, no. 11, pp. 3091-3102, 2022. DOI: 10.1007/s12221-022-4400-0.

[ACM Style]

Wenjun Yan, Bo Zhu, and Weidong Gao. 2022. Sizing Performance Improvement of Cotton Yarns Pretreated with UV Irradiation. Fibers and Polymers, 23, 11, (2022), 3091-3102. DOI: 10.1007/s12221-022-4400-0.

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