Relationship between texturing entropy change and luster of air textured yarn

The relative entropy value of yarn changes significantly in the course of filaments texturing.Because it is directly related to disordered degree,it has a remarkable impact on the luster of the yarn.To probe into the inner relationship between texturing entropy change and luster of the yarn as well as acting mode,an air textured yarn ATY with typical disordered structure and greater disordered degree on the surface was chosen as the research subject,and a series of filaments with different specifications were spun on the basis of single factor experiment and tests were conducted accordingly.The results showed that air texturing significantly increases the disordered degree and relative entropy,while the multi-differential shrinking rise these two factors in a softer manner;and along with the rising of relative entropy and disordered degree,the yarns′ peak reflectivity and reflectivity go down,peak width gets wider,luster becomes softer,and shinning effect is diminishing.