纳米氧化锌整理剂的研制

以聚丙烯酸盐为表面改性剂 ,氨基改性有机硅为粘接剂和柔软剂 ,制备含纳米氧化锌织物整理剂 ;并采用浸、轧、烘整理工艺制备纳米抗菌功能棉织物。利用抑菌圈法比较不同氧化锌粉体、纳米棉织物对金黄色葡萄球菌和大肠杆菌的抑菌效果 ,并测试其耐洗性 ;测试了不同氧化锌在有光照和无光照不同条件下的抗菌性。结果表明 ,氯化锌和草酸摩尔比为 1∶1.0 7,反应条件为 2 0℃× 90min ,以氯化锌和草酸为原料制备草酸锌 ,再经 5 0 0℃煅烧 1h制备纳米氧化锌 ,产率可达 98%以上 ,粒径可控制在 2 0～ 30nm或 5 0～ 6 0nm。经表面改性的纳米氧化锌呈 3～ 5nm粒子粘联的“糖球状” ,由此制备的纳米氧化锌织物整理剂呈乳白色。纳米抗菌功能织物对金黄色葡萄球菌和大肠杆菌均有良好的抗菌性 ,经 12次皂洗后仍可保持 5 0 %的抗菌能力。其抗菌机理应该是“光激发”和“金属溶出”双重作用。

Preparation of Zinc Oxide Nano-Particle Finish

Antibacterial cotton fabric is prepared with dip-pad-dry process using bacteriostat containing polyacrylate sodium as surface modifier,aminosiloxane as binder and softener and zinc oxide nano particles agent.The bacteriostatic results to staphylococcus,aureus and bacterium coli as well as durability to washing are tested with different size of ZnO nano particle and with or without light.The prepared antibacterial fabric shows effective bacteriostatic results and remains 50%residual antibaeterial power after 12 cycles washing.The antibacterial mechanism is considered as synergy of"light excitation"and"metal dissolving".