TY - JOUR
T1 - Application of Ultrasound in Anti-felting Finishing Process
AU - Zhendong Liu, Yanli Li & Jiaxian Yu
JO - Journal of Fiber Bioengineering and Informatics
VL - 4
SP - 337
EP - 347
PY - 2011
DA - 2011/04
SN - 4
DO - http://doi.org/10.3993/jfbi12201104
UR - https://global-sci.org/intro/article_detail/jfbi/4930.html
KW - Wool
KW - Textile Finishing
KW - Anti-felting
KW - Enzyme
KW - Ultrasound
AB - In this paper ultrasound was applied in Savinase shrink-proof finishing process for wool fabric. A two-step
procedure was adopted. Initially, hydrogen peroxide was used for pre-treatment in order to facilitate
the subsequent enzymatic attack and to peel the outer scale layer effectively. The effects of enzyme
concentration, temperature, time and ultrasonic power were explored through orthogonal experiments
thoroughly. The results showed that ultrasound could remarkably speed up the scale-peeling process and
greatly improve the shrinkage of wool fabrics. In contrast with the results obtained under conditions
without the presence of ultrasound, much better shrinkages were obtained under ultrasound. Moreover,
the weight loss and strength reduction were within acceptable limits. Therefore, ultrasound became a
beneficial means for wool anti-felting treatment in enzymatic process. It helped to achieve better results
in lesser time and lower temperature. The optimal technology was Savinase concentration (owf) 0.8%,
temperature 50 °C, pH=8.5, time 40 min, ultrasonic power 175 W and bath ratio 25:1. Under these
conditions, the shrinkage, weight loss and tensile strength of treated sample were 1.1%, 5.40% and 417N
respectively.