Abstract
In this study, the interaction between blended rotor-spun yarns of cotton and polyester fibers has been investigated using the hybrid model. Various blends of PET/CO were produced and tensile and evenness properties of yarns were examined. The migration index of yarns has been calculated to study how migration affects the yarn properties. The difference between the experimental values and predicted values has been studied statistically using the rule of mixtures. The results of the tenacity of yarns have been compared with Hamburger's model. The results show that elongated and thin places have no significant difference in the rule of mixtures model. Tenacity, work of rupture, and hairiness are decreased in blended yarns while the uniformity, thick places, and neps are increased. The tenacity of the yarns does not follow the Hamburger's model. The migration index shows that cotton fibers tend to migrate inwards and the migration index of this fiber is minimum at 75:25 and maximum at 50:50 PET/CO blended yarns.
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