Preparation and Anti-Bacterial Properties of Chitosan/Nano-Ag Modified Carboxymethyl Cellulose for Wound Dressing Materials

Aim at developing high-performance wound dressing with super moisture control performance, excellent antimicrobial activity, good biocompatibility as well reduced cost, carboxymethyl rayon viscose yarns (CM-RVYs) had been successfully prepared by alkalinization and etherification of using sodium hydroxide chloroacetic acid. The antibacterial CM-RVYs were obtained uniting chitosan/nano-Ag to the through electrostatic interaction polyelectrolyte. FTIR XRD analysis showed that underwent different degrees carboxymethylation change degree substitution (DS). DS could affect water absorption, retention, mechanical properties CM-RVYs, which in turn determine their performance dressing. research results indicated increasing DS, crystallinity decreased gradually. surface cross section modified became rough irregular along various white crystal-like protuberances appeared on its surface. And absorption retention both rose a lot, but breaking strength first increased then compared elongation fluctuated just between 16%. With 0.51, reached 13.01 g·g-1 respectively 8.54 cN 15.27%. against E. coli S. aureus would be used high