Surface Modification of Wool Fabrics Using Chitosan Nanoparticles Before Dyeing with Synthesized Direct Dye and Antimicrobial Activity Evaluation

Document Type : Original Article


Textile Research and Technology Institute, National Research Centre, 33 El Bohouth st., Dokki, Cairo, P.O.12622, Egypt


Pretreatment of wool fabrics with chitosan and chitosan nanoparticles (1%, 2%, 3%) with synthesized direct dye is used to enhance the exhaustion of dye, fastness properties, and antimicrobial activity of dyed fabrics. Also, we use the ultrasonic technique for wool dyeing to reduce the temperature and time of dyeing. The results assessed for dyeing and antimicrobial activity indicate high-quality dyeing properties, However, direct dyes showed higher exhaustion and fixation values, fastness properties, and the colorimetric CIE L*a*b* C*h° data of the dyed wool fabrics. Also, these direct dyes have higher antibacterial activity toward Gram-positive and Gram-negative bacteria therefore they can be used in biomedical applications.


Main Subjects

Volume 65, Issue 131 - Serial Number 13
Special Issue: Chemistry and Global Challenges (Part A)
December 2022
Pages 317-325
  • Receive Date: 29 March 2022
  • Revise Date: 23 April 2022
  • Accept Date: 16 May 2022