A Study of Spinning Persian Silk Waste/Cotton Blends on Rotor Spinning System

Abstract

In this study, processing of cutting and de-gumming of silk waste samples were carried and silk waste sliver was prepared. Silk waste and cotton slivers were blended at three different blend ratios (65/35, 50/50 and 35/65) and silk waste/cotton blended as well as cotton and silk rotor spun yarns were produced. The physical and mechanical properties of the produced yarns including liner density, tensile strength, evenness, imperfection, hairiness, frictional and abrasion resistance were studied. Our finding shows that by increasing the silk fiber blend ratio, the yarn elongation and abrasion resistance significantly increased. However, silk fiber blend ratio has no significant influence on yarn imperfection, frictional and evenness properties. It also shown that tensile strength of silk waste/cotton blended rotor spun yarn at 50% silk fiber blend ratio is significantly higher than those of 100% cotton as well as two other blended yarns. Utilizing Hamburger theory also confirmed this finding. Thus, silk waste rotor spun yarn has the highest tensile strength compared with other yarn samples. On the other hand, the results indicate that by the increase of silk blend ratio, slight reduction of yarn linear density and yarn hairiness deterioration occurred.