Quarterly Scientific-Research Goljaam

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.

Commercial wool scouring instructions are introduced mainly by technological and chemical manufacturing companies. Most of the instructions are prepared according to the technical specifications of the most famous international wool brands with high level of production. Other types of wools are scoured based on mentioned instructions with minor corrections. Using commercial instructions in scouring of Iranian wools usually leads to decrease the scoured wool quality. In this study, operational methods and machine settings used by Iranian wool scouring companies are investigated. To achieve better appearance characteristics (light and optical) on scoured wool, some changes to conventional methods are introduced, considering the Iranian wool characteristics. These changes are then evaluated to suggest the optimum methods of scouring. Finally, effects of these changes are evaluated to suggest the best method for obtaining the best quality Iranian scoured wools. Results show that the changes have advantageous effects on the quality of scoured wools.