甲基丙烯酰胺接枝棉织物纳米银抗菌整理

Nano-silver antibacterial finishing of cotton fabric grafted with methacrylamide

采用棉织物甲基丙烯酰胺接枝、银离子浸渍吸附和汽蒸还原的整理工艺,制备纳米银抗菌整理织物。研究整理工艺因素对硝酸银利用率、整理织物纳米银含量以及抗菌性能的影响,考察其耐洗性。结果表明:接枝可提高硝酸银利用率和织物纳米银含量;当硝酸银浓度为0.10 mmol/L时,整理织物纳米银含量已达102.9 mg/kg,大肠杆菌和金黄色葡萄球菌抑菌率均已达99.9%,50次洗涤后,银含量保留率为83.19%,2种菌种的抑菌率仍超过97%。经该工艺整理的织物具有优良的抗菌及耐洗涤性能,工艺过程中银离子吸附和还原分浴处理,可为银离子浸渍液重复利用创造条件,节约银离子。

A suitable finishing process which included grafting methacrylamide onto cotton fabric, dipping the grafted fabric for silver ion absorption and steaming for silver ion reduction was used to prepare nano-silver antibacterial finished fabric. The influence of process conditions on the utilization rate of silver ion, silver content in fabric and antibacterial property of the finished fabric was studied, as well as the washability. The results showed that grafting can raise the utilization rate of silver nitrate and silver content of the fabric; when the concentration of silver nitrate was 0.10 mmol/L, the silver content of the fabric was 102.9 mg/kg, and the bacterial inhibition rate of the fabric against Bacillus coli and Staphylococcus aureus both reached 99.9% , and after 50 wash cycles, the retention rate of silver in the fabric was 83.19% , and its bacterial inhibition rate against above two kinds of bacteria was over 97%. The finished fabric had excellent antibacterial property and washability. The finishing process in which dipping for silver ion adsorption and steaming for silver ion reduction were performed separately made it possible to reuse the dipping bath of nitric acid silver and to save silver ion.