| Cotton has been widely employed in textile materials because of its excellent wear behavior. With the improvement of living quality, people are paying more and more attention to physical health. As a result of that the modification and antibiotic finish of cotton have been a focus of study. The hydroxide radical groups on glucose residue of cellulose could be transferred into active groups under selective oxidation, which are able to be exploited to achieve the functional modification for cotton.A diversification of amino-terminated hyperbranched polymers (HBP-NH2Ⅰ-Ⅲ) were utilized as templates to prepare silver nanoparticles. Cotton was partially modified by sodium periodate solution to graft silver nanoparticles in HBP-NH2 and antibacterial abilities afterwards were explored. The results are displayed as following.Silver nanoparticles synthesized in HBP-NH2 III are the most stable with the smallest size. The antibacterial effect of cotton after oxidation is much better than the raw one, both with over 99.4% inhibitory rate against E. coli and S. aureus. To reach the same consequent, the concentration of antibacterial agent needs improving 15 times at least for unmodified cotton. What’s more, the oxidized cotton has more outstanding wash-resistant compared to the unfinished, with just 22.55% loss of silver content after washing 50 times while 92.86% for raw cotton. |
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