Antibacterial and anti-mildew behavior of chitosan/nano-TiO2 composite emulsion

Lei Shi; Yan Zhao; Xiaodong Zhang; Haijia Su; Tianwei Tan

Korean Journal of Chemical Engineering, Vol.25, No.6, 1434-1438, November, 2008

DOI10.1007/s11814-008-0235-7 Export Citation

Antibacterial and anti-mildew behavior of chitosan/nano-TiO2 composite emulsion

Lei Shi, Yan Zhao, Xiaodong Zhang, Haijia Su^†, and Tianwei Tan

State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China

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A novel chitosan/nano-TiO2 composite emulsion (CTCE) was prepared by inverse suspension technology, and its multi-function properties were studied. As can be seen from the results, the gauze treated with chitosan/nano-TiO2 composite emulsion showed excellent antibacterial activities against Escherichia coli, Aspergillus niger and Candida albicans that the bactericidal ratios could reach 99.96%, 100% and 78.3% after 24 h, respectively. At the same time, the chitosan/nano-TiO2 composite emulsion could really kill the bacteria, not just inhibit its growth, and the bactericidal ratio for E. coli could reach 70.3% after 1 h. The bactericidal ratio for E. coli reached 98.8% at 27 ℃ compared with 58.7% at 18 ℃ after 8 h due to the activity of bacteria being weakened at low temperature. Furthermore, the antibacterial ability of antibacterial gauze was hardly influenced with the increase of storage time, which could be reused for up to 8 times without loss of antibacterial ability.

Keywords:Chitosan;Nano-TiO2;Antibacterial;Anti-mildew;Textile

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[Referenced By]

[1] Ye JX, Adv. Text. Technol., 13, 48 (2005)

[2] Hu ZG, Phys. Test. Chem. Anal., 41, 203 (2005)

[3] Jiang T, Text. Sci. Res., 14, 7 (2003)

[4] Xia JL, Wang C, Liu XX, J. Cent. S. Univ., 35, 31 (2004)

[5] Qian JD, Jiangsu Silk, (3), 21 (2002)

[6] Kim YH, Nam CW, Choi JW, Jang JH, J. Appl. Polym. Sci., 88(6), 1567 (2003)

[7] Ye WJ, Leung MF, Xin J, Kwong TL, Lee DKL, Li P, Polymer, 46(23), 10538 (2005)

[8] Deng B, Chen YR, Luo WD, Knit. Ind., (9), 52 (2005)

[9] Lu N, Deng BY, Yao J, Wool Text. J., (11), 18 (2005)

[10] Yao J, Deng BY, Lu N, Chin. Text. Lead., (11), 76 (2005)

[11] Montali A, Injury, Int. J. Care Injured, (37), 81 (2006)

[12] Fereidoon S, Vidana AJK, YouJin J, Trends Food Sci. Technol., 10, 37 (1999)

[13] Yan Z, Haijia S, Tianwei T, Korean J. Chem. Eng., 24(6), 1047 (2007)

[14] Wu YG, Ye D, Qiu SY, J. Guizhou Univ. Technol., 34, 52 (2005)

[15] Aprile C, Corma A, Garcia H, Phys. Chem. Chem. Phys., 10, 770 (2008)

[16] Na YS, Kim DH, Lee CH, Lee SW, Park YS, Oh YK, Park SH, Song SK, Korean J. Chem. Eng., 21(2), 430 (2004)

[17] Chen DM, Wang TJ, Yu SJ, J. Mat. Eng., (4), 42 (2002)

[18] Xu RF, Xu XY, Fu GZ, J. Beijing Univ. Chem. Technol., 29, 45 (2002)

[19] Wang GQ, Guo YZ, Sun JL, J. Yunnan Univ., 24, 33 (2002)

[20] Daoud WA, Xin JH, Zhang YH, Surf. Sci., 599, 69 (2005)

[21] Dong ZF, Du YM, Fan LH, J. Funct. Polym., 17, 61 (2004)