Improvement of physical properties of Iranian wool yarn used in carpet with biocompatible process

Special properties of Iranian wool such as elasticity compared with Merino wool leads to more popularity of Persian carpet at an international level. By using of finishing process it is possible to improve some of the physical properties of wool fibers such as fleece modification, increasing of lightness and whiteness and producing a smoother surface that result a better quality carpet. In this research influence of proteases on Iranian wool was investigated and variation in concentration and time was optimized. The results indicated that increasing of enzyme leads to increasing of loss of weight, strength and strain. With prolonged enzymatic processing it may obtain better whiteness, lightness, and bending. Changes in whiteness, bending and fineness and other properties such as weight loss, strength reduction and strain would be discussed.