Abstract: In order to provide the textile with multifunctional properties, this research presents a method to in situ fabricate silver nanoparticles and ZnO nanoparticles on cotton fabrics by an amino terminated hyperbranched polymer (HBP-NH2) via a one-step microwave treatment. The antibacterial activity and UV protective property of treated cotton fabrics were measured. The results indicated that HBP-NH2 exhibited multiple functions. It not only can reduce silver ions to synthesize silver nanoparticles, but also react with zinc ions to generate ZnO nanoparticles. Cotton fabrics with different silver and ZnO contents were fabricated by treated with different concentration of reagents. XRD, XPS and SEM measurements verified that silver nanoparticles and ZnO nanoparticles produced in the cotton fabric successfully with diameter from 30 to 120 nm. The nano Ag-ZnO treated cotton fabrics shown excellent antibacterial activities and UV protective properties. The bacterial reduction rates of Staphylococcus aureus and Escherichia coli were all reached 99.99 %. Otherwise, the nano Ag-ZnO multifunctional finishing can also improve the whiteness of cotton fabric after treated with Ag.

Key words: hyperbranched polymer, silver nanoparticle, ZnO nanoparticle, finishing