Studies on physical properties of jute-acrylic blended bulked yarn

Abstract

Jute-shrinkable acrylic blended bulked yams of various blend ratios have been prepared by relaxing shrinkable componentof the yams using three different methods of thermal treatments, namely dry hot air, steam and boiling water. The performance of these methods of bulking has been compared. It is observed that all the three methods produce bulked yarn shaving more or less same value of specific volume. Since the boiling water method is easier, convenient and economical,this method is adopted for detail study. The optimum treatment time in boiling water is found to be 30 min. Flexural rigidity of yarns decreases remarkably after bulking and shows a decreasing trend with the increase in percentage of acrylic up to80%. Breaking strength and breaking extension of non-bulked yam increase with the increase in percentage of acrylic. The extensibility further increases remarkably after bulking but the breaking stress of parent yam decreases remarkably on bulking. The loss of tenacity is more when percentage of jute is more in the blends.