Studies on Bioscouring of Cotton
Department of Textile Technology and Research Centre, Bapuji Institute of Engineering and Technology, Davangere-577004, Karnataka, India
Abstract: The conventional scouring process involving the harsh environment is slowly being replaced with environment friendly approach using enzymes. Bioscouring – an ecofriendly method of removing impurities from fabrics by enzymes is one of the alternative processes that has been investigated in recent years in order to improve the scouring efficiency and to reduce the environmental impact. Several enzymes have been studied for this process and these enzymes remove the non cellulosic impurities present in the fabric. Such a process would enhance the absorbency of the fabric without appreciable strength loss and also would help in the proper dyeing and finishing of the fabric.
In the wake of the above considerations in mind this present study was undertaken to scour 100% cotton fabrics (men’s shirting, ladies blouse material and knitted) using conventional and bioscouring techniques. After scouring, the performance of the two processes was compared by characterizing fabric properties like strength, drape coefficient, crease recovery, effluent tests such as BOD and COD. Absorbency of two methods was compared by using drop and wicking tests.
The results of various tests reveal that while the bioscoured fabric shows lower drape coefficient value than chemical scoured fabrics, the crease recovery angle of bioscoured fabrics is higher compared to chemical scoured fabrics. The bioscouring liquor shows lower effluent concentrations as was observed from BOD and COD values. All the bioscoured fabrics exhibit quick absorption behavior.
Keywords: Cotton, Bioscouring, Enzymes, Scouring, Physical Properties.