JOURNAL OF TEXTILE RESEARCH ›› 2013, Vol. 34 ›› Issue (11): 87-0.
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Abstract: This paper describes a strategy of size controlled synthesis of silver nanoparticles by a modified polyamide hyperbranched polymer (PNP). The mechanism of this process was proposed in detail. The antibacterial property of prepared silver nanoparticles aqueous solution was studied. Then the PNP was utilized to in situ fabricate silver nanoparticles in cotton fabric for its antibacterial finishing. The results indicated that amino groups in the PNP act as an important role during the synthesis of silver nanoparticles which can entrap silver ions and reduced them to generate silver nanoparticles under the control of molecular network structure of PNP. The silver nanoparticles with average size at 13.23, 4.34 and 2.66 nm were synthesized by adjust the molar ratio between silver ions and amino groups of PNP. The minimum inhibitory concentration (MIC) of prepared silver nanoparticles aqueous solution was 2 mg/L. The silver nanoparticles in situ generation treated cotton fabrics have excellent antibacterial activities and laundering durability. The bacterial reduction rates of treated cotton fabrics against Staphylococcus aureus and Escherichia coli were all reached above 99%.
Key words: hyperbranched polymer, silver nanoparticle, cotton fabric, in situ, antibacterial finishing
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