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Finishing of cotton fabrics with aqueous nano-titanium dioxide dispersion and the decomposition of gaseous ammonia by ultraviolet irradiation

Authors

  • Yongchun Dong,

    Corresponding author
    1. College of Environmental Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China
    2. Institute of Material Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, People's Republic of China
    • College of Environmental Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China
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  • Zhipeng Bai,

    1. College of Environmental Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China
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  • Liwen Zhang,

    1. College of Environmental Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China
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  • Ruihua Liu,

    1. Institute of Material Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, People's Republic of China
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  • Tan Zhu

    1. College of Environmental Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China
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Abstract

An aqueous dispersion of nano-titanium dioxide (nano-TiO2) was prepared and mixed with a silicone softener to establish a finishing bath. Cotton fabrics were treated with this finishing bath with a pad–dry–cure process and were then characterized by X-ray diffraction and scanning electron microscopy. The gaseous ammonia was derived from an environmental condition simulated chamber. The specifically designed photocatalytic reactor was used to assess the factors, including the dosage of the aqueous dispersion of nano-TiO2, the nature of the fabric, the direct dye, and the water-repellent agent, that affected the decomposition efficiency of ammonia in air. In addition, nano-TiO2-finished fabrics were evaluated with respect to whiteness and breaking tension properties. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 286–291, 2006

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