Photocatalytic Finishing of Cotton Fabrics Based on Nano-Titanium Dioxide and Polyurethane Binder

Abstract:

In the textile industry, binders are used in fabric finishing processes to promote adhesion between a fiber surface and the particles of desired properties. In this research, a commercial polyurethane binder, Evo^® Fin PUS, was used to attach photocatalytic TiO₂ nanoparticles (Degussa^®, P-25) onto a cotton surface, in order to impart self-cleaning properties and to improve wash fastness. The cotton fabrics were finished with the aqueous dispersion of TiO₂ and the binder, consisting of 2, 4, and 6 % w/v for each component. Finishing was done via a pad-dry-cure process. Then a direct dye (C.I. Direct Blue 199), which was used as a model stain, was dropped onto each sample prior to 24-h illumination with simulated solar light. The self-cleaning properties were triggered by light and evaluated in terms of the reduction in color strength values (K/S) of the stain after exposure. The self-cleaning performance was preserved when the binder was added to the TiO₂ coating. However, washing reduced the self-cleaning performance of all samples because of the detachment of some TiO₂ particles, as observed by scanning electron microscopy. Overall, improved wash fastness was observed with the help of binder. Samples were further analyzed for mechanical properties, crease recovery, and drapeability.

• Periodical: Advanced Materials Research (Volumes 1033-1034)
• Pages: 1227-1234
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1033-1034.1227
• Online since: October 2014
• Authors: Penwisa Pisitsak*, Anchalee Porntrirat, Nisa Boonwang, Rabchok Thongcharoen, Nattaya Punrattanasin
• Keywords: Cotton, Polyurethane Binder, Self-Cleaning Textile, Titanium Dioxide

References

[1] S.D. Mo and W.Y. Ching: Phys. Rev. B. Vol, 51 (1995), p.13023.

[2] G. Liu, X. Yan, Z. Chen, X. Wang, L. Wang, G.Q. Lu and H.M. Cheng: J. Mater. Chem. Vol. 19 (2009), p.6590.

[3] A. Mills, S.K. Lee and A. Lepre: J. Photochem. Photobiol. A. Vol. 155 (2003), p.119.

[4] K.K. Gupta, M. Jassal and A.K. Agrawal: Indian J. Fibre Text. Vol 33 (2008), p.443.

[5] K. Sundaresan, A. Sivakumar, C. Vigneswaran and T. Ramachandran: J. Ind. Textil. Vol. 41 (2012), p.3259.

[6] K.T. Meilert, D. Laub and J. Kiwi: ‏ J. Mol. Catal. A: Chem. Vol. 237 (2005), p.101.

[7] T. Yuranova, R. Mosteo, J. Bandara, D. Laub and J. Kiwi: J. Mol. Catal. A: Chem. Vol. 244 (2006), p.160.

[8] C.B. Vick, in: Wood Handbook-Wood as an Engineering Material, General Technical Report FPL-GTR-113, chapter, 9, USDA, WI (1999).

[9] F. Ming-Yuan, in: Polyurethane Elastomer and Its Applications, Chemical Industry Publisher (1999).

[10] W.D. Schindler and P.J. Hause, in: Chemical Finishing of Textiles, Woodhead Publishing, Cambridge (2004).

[11] N.T. Dung, N.V. Khoa and J.M. Herrmann: Int. J. Photoenergy Vol. 7 (2005), p.11.

[12] W. Zhang, C. Li, M. Liang, Y. Geng and C. Lu: J. Hazard. Mater. Vol. 181 (2010), p.468.

[13] M.J. Uddin, F. Cesano, F. Bonino, S. Bordiga, G. Spoto, D. Scarano and A. Zecchina: J. Photochem. Photobiol. A. Vol. 189 (2007), p.286.

DOI: 10.1016/j.jphotochem.2007.02.015

[14] K.G. Gupta, M. Jassal and A.K. Agrawal: RJTA Vol. 11 (2007), p.1.

[15] K. Qi, X. Wang and J.H. Xin: Text. Res. J. Vol. 81 (2011), p.101.

[16] R.A. Gill and R. Steele: Text. Res. J. Vol. 32 (1962), p.338.

[17] British Standard Institution, Methods of test for textiles- BS 5058: 1973, B. S Handbook No. 11, London (1974).