Robust Superhydrophobic and Photocatalytic Cotton Fabrics Based on TiO₂-SiO₂-PDMS Composite Coating

Abstract:

In this work, self-cleaning cotton fabrics were prepared based on the TiO₂-SiO₂-Polydimethylsiloxane (PDMS) composites. TiO₂-SiO₂ composites were synthesized by depositing TiO₂ nanocrystals onto preformed porous SiO₂ and PDMS was used to enhance the linkage between TiO₂-SiO₂ composites and cotton fabrics. The TiO₂-SiO₂-PDMS composites coated cotton fabrics show superhydrophobicity with a water contact angle of 157°because of the abundant of methyl groups and hierarchical roughness features of the coated cotton fabrics. Meanwhile, the TiO₂-SiO₂-PDMS composites coated cotton fabrics display photocatalytic property, which were analyzed based on the removal and degradation of rhodamine B (RhB) under ultraviolet light. Abrasion resistance test indicates that the coating possesses a good mechanically durability.

• Periodical: Key Engineering Materials (Volume 671)
• Pages: 225-230
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.671.225
• Online since: November 2015
• Authors: Yin Yan Ding, Bi Xu, Feng Yan Ge, Zai Sheng Cai
• Keywords: Anti-Ultraviolet, Cotton Fabrics, Self-Cleaning, Superhydrophobic, TiO₂-SiO₂-PDMS

References

[1] Bhushan, B., et al., Natural and biomimetic artificial surfaces for superhydrophobicity, self-cleaning, low adhesion, and drag reduction. Progress in Materials Science, 2011. 56: pp.1-108.

DOI: 10.1016/j.pmatsci.2010.04.003

[2] Barthlott, W., et al., Purity of the sacred lotus, or escape from contamination in biological surfaces. Planta, 1997202: pp.1-8.

DOI: 10.1007/s004250050096

[3] Kaihong, Q., et al., Facile preparation of anatase/SiO2 spherical nanocomposites and their application in self-cleaning textiles. Journal of Materials Chemistry, 2007. 17: pp.3504-3508.

DOI: 10.1039/b702887c

[4] Schraml-Marth, M., et al., Porous silica gels and TiO2/SiO2 mixed oxides prepared via the sol-gel process: characterization by spectroscopic techniques. Journal of Non-Crystalline Solids, 1992. 143: pp.93-111.

DOI: 10.1016/s0022-3093(05)80557-5

[5] Ibrahim, N.A., et al., Novel approach for attaining cotton fabric with multi-functional properties. Journal of Industrial Textiles, 2010. 40: pp.65-83.

DOI: 10.1177/1528083709349892

[6] Ge, J., et al., Superhydrophobic modification and characterization of glass based on SiO2 aerogels. Surface Technology, 2013101: pp.103-107.

[7] Zhao, J.X., et al., Optical and photocatalytic properties of TiO2/Ag–SiO2 nanocomposite thin films. Journal of Alloys and Compounds, 2012. 535: pp.21-26.

DOI: 10.1016/j.jallcom.2012.04.089

[8] Ma, M., et al., Superhydrophobic fabrics produced by electrospinning and chemical vapor deposition. Macromolecules, 2005. 38: pp.9742-9748.

DOI: 10.1021/ma0511189

[9] Cui, H., et al., Highly efficient inorganic transparent UV-protective thin-film coating by low temperature sol-gel procedure for application on heat-sensitive substrates. Advanced Materials, 2008. 20: pp.65-68.

DOI: 10.1002/adma.200701960

[10] Afzal, S., et al., Superhydrophobic and photocatalytic self-cleaning cotton. Journal of Materials Chemistry A, 2014. 2: pp.18005-18011.

[11] Xu, B., et al., Self-cleaning cotton fabrics via combination of photocatalytic TiO2 and superhydrophobic SiO2. Surface and Coatings Technology, 2015. 262: pp.70-76.

DOI: 10.1016/j.surfcoat.2014.12.017