棉织物纳米TiO2溶胶自清洁功能整理工艺

采用溶胶-凝胶法，以Ti(OC4H9) 4为原料，在常压低温下合成纳米TiO2水溶胶，并应用于棉织物的自清洁整理。探索不同整理工艺对棉织物表面的纳米TiO2晶型、分散性和结晶度的影响，并利用XRD和SEM进行表征。结果表明，棉织物经浸轧烘-汽蒸整理工艺处理后,表面纳米TiO2粒子分散均匀，结晶强度高，对亚甲基蓝溶液的降解率可达88%以上，对红酒和咖啡等污渍自洁效果明显，且整理后织物的断裂强力无明显变化。

Self-cleaning cotton prepared by nano-TiO2 hydrosol

With Ti(OC4H9)4 as a precursor, nano-TiO2 hydrosol is prepared by sol-gel method at ambient pressure and low temperature,and then applied to the self-cleaning finishing of cotton. The effect of finishing processes on crystal form, dispersion and crystallinity of TiO2 are studied. TiO2 particles on the cotton surface are also characterized by XRD and SEM. The results show that nano titania with high crystalline intensity is well dispered into the cotton by a dip-pad-dry-steam finishing process. The finished fabric features more than 88% degradation of Methylene Blue solution, obvious effect on degradation of red wine and coffee stains with nearly unchanged breaking strength.