The influence of the optical brighteners concentration on the degree of whiteness and UV protection of cotton fabric

Authors

  • Tihana Dekanić University of Zagreb Faculty of Textile Technology, Department of Textile Chemistry and Ecology, Zagreb, Croatia https://orcid.org/0000-0001-8822-9720
  • Ivana Čorak University of Zagreb Faculty of Textile Technology, Department of Textile Chemistry and Ecology, Zagreb, Croatia https://orcid.org/0000-0002-0621-1736
  • Anita Tarbuk University of Zagreb Faculty of Textile Technology, Department of Textile Chemistry and Ecology, Zagreb, Croatia https://orcid.org/0000-0002-4539-2103
  • Juraj Hofmann University of Zagreb Faculty of Textile Technology, Department of Textile Chemistry and Ecology, Zagreb, Croatia
  • Nikolina Marković University of Zagreb Faculty of Textile Technology, Department of Textile Chemistry and Ecology, Zagreb, Croatia

Keywords:

cotton, optical brightening, fluorescence, whiteness, UV protection, sustainability of the bleaching process

Abstract

Chemically bleached cotton fabrics were optically brightened in a wide concentration range with optical brighteners (fluorescent brightening agents, FWAs) of different constitution, affinity and emission tone: stilbene derivatives Uvitex BHT and Uvitex RSB, and distyrylbiphenyl derivative Uvitex NFW with the purpose of process sustainability. The fluorescence of FWA solutions was investigated, and then cotton fabrics were optically brightened in these solutions. The influence of the FWA concentration on cotton fabric whiteness and the UV protection was researched after treatment and one cycle of washing in water. It has been shown that it is possible to achieve satisfactory whiteness and effective UV protection by applying a low concentration of FWA at a reduced temperature of 60°C, in a shorter treatment time of 30 min and at a neutral pH, which makes this treatment sustainable.

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Published

2020-04-29

How to Cite

[1]
Dekanić, T., Čorak, I., Tarbuk, A., Hofmann, J. and Marković, N. 2020. The influence of the optical brighteners concentration on the degree of whiteness and UV protection of cotton fabric . Tekstil. 69, 4-6 (Apr. 2020), 67–79.

Issue

Vol. 69 No. 4-6 (2020)

Section

Original scientific paper

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