Synthesis of hybrid material (chitosan/ZnO nanoparticles) was performed using different concentrations of ZnO and chitosan. Cotton fabrics were successfully coated by means of a simultaneous sonochemical deposition of two compounds with intrinsic antibacterial activity, chitosan and ZnO nanoparticles (NPs). The sonochemical process for cotton coating with hybrid antimicrobials was optimised in terms of compounds concentrations, processing pH, time, and solvent used. Considering that high concentration of ZnO NPs renders the fabrics rather hydrophobic without significantly improving further their antimicrobial performance 2 mM ZnO NPs and 0.3 % of chitosan were selected as the optimum concentrations to be used in the simultaneous sonochemical coating process. The hybrid chitosan-ZnO coating material displays higher antibacterial activity when compared to the coatings comprising the individual components as chitosan.

Simultaneous coating of hybrid bio nanocomposite (chitosan/zinc oxide nanoparticles) using ultrasounds to enhance the antimicrobial activity of cotton fabrics

245th National Meeting (2013)

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