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The Mechanical Behavior of Cotton and Cotton/Polyester Yarns Subjected to Enzyme Treatment

Jim He, P. Radhakrishnaiah, Gisela D. Buschle and A. P. S. Sawhney


 
ABSTRACT

This work evaluated the changes in the low-stress mechanical behavior of 100% cotton and cotton/polyester yarns subjected to enzyme treatment. Yarns representing structural differences as defined by different spinning systems were enzyme treated under identical treatment conditions. The treated yarns showed widely different weight losses, suggesting that structural parameters such as density of fiber packing, fiber distribution in the cross-section, and fiber orientation may be influencing the rate of cellulose erosion in the treated yarns. The treated yarns in general showed higher thickness compression and higher compression energy, indicating marked improvement in softness. Most treated yarns also showed reduced values for bending stiffness and bending hysteresis. The extent of change in individual properties was found to be related to the spinning system used. Based on the observed changes in mechanical properties, it can be expected that the fabrics made from the treated yarns would be softer and less stiff to bend.



Reprinted from Proceedings of the 2000 Beltwide Cotton Conferences pp. 815 - 817
©National Cotton Council, Memphis TN

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Document last modified Saturday, Jun 17 2000