Analysis of Adhesion Effect of Solution on Cotton Fibers in Adhesive-aided Ring Spinning

The adhesive-aided ring spinning (AARS) which takes advantage of wetting and adhesion of solution on fibrous strand to re-twist fiber ends into yarns, thus optimizes the yarn formation during spinning process. To investigate the adhesion effect in the AARS, CMC-Na and PAM/PVA were chosen as the basic and auxiliary adhesive respectively to explain the interaction mechanism between fibers and solution. The analysis of solution performance in terms of the similar polarity with cotton fiber proves that the adhesive force goes up with the increase of surface tension when it is under 98 mN/m, while, the lower surface tension contributes to a better wetting effect. The appropriate adhesive solutions including CMC-Na/PAM solution and CMC-Na/PVA solution complete the desired adhesion effect due to the analysis of the attachment amount of solution on fibrous strand during AARS process. In addition, the adhesive solution makes fibers on the surface of fibrous strand stick tighter and decreases the yarn diameter by up to 8.6 %. The experimental results state that both better wetting effect and adhesive force are crucial to achieve a better adhesion effect and that it is the key for improving yarn performance. The AARS yarns have less hairiness, higher breaking strength and stronger abrasion resistance, and the data also verify the analysis of adhesion effect.