Suspended Liquid of Nano TiO<,2> and SiO<,2>-Ag for Antibacterial Finishing
With special performance of nanometer materials, nanometer antibacterial agents are better than usual antibacterial agents. Nano TiO<,2> (Anatase) and nano SiO<,2>-Ag are just cases in point. Because the nano- powder does not dissolve in water and lacks affinity to the natural fabric, it is necessary to confect the nano-powder into relatively stable suspended liquid and then the nano-powder is transferred into the fabric by pad-roll. Therefore, the effects of dispersant on dispersion of nano TiO<,2> and SiO<,2>- Ag particles were investigated respectively in this paper. The sedimentation height and the size distribution of the dispersed particles in aqueous solution were employed to characterize the particles dispersion. The experimental results show that sodium hexametaphosphate is efficient dispersant for TiO<,2> and SiO<,2>-Ag particles in aqueous solution. The zeta potential of the particles in aqueous solution was measured to analyse the dispersion mechanism. Optimal formula for the suspended liquid of the mixed nano-powder TiO<,2> and SiO<,2>-Ag was obtained by the orthogonal experiments on the ratio of the mixture, the dosage of dispersant and PH value. The antibacterial rate of the finished fabric is shown as follows: the anti-E. coli rate is 100％ and the anti- MSSA rate is 96.1％ in 5 minutes.
mixed nano-powders dispersion TiO<,2> SiO<,2>-Ag antibacterial
XU yingqi XU Jun YAN Tingting ZHU Sukang
College of Fashion, Shanghai University of Engineering Science, Shanghai 201620, P. R. China College of Textiles, Donghua University, Shanghai 200051, P. R. China Textile and fashion Colloge of Nantong Univcrsity, Nantong 226007, P. R. China
国际会议
上海
英文
919-922
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）