The sol-gel synthesis of cotton/TiO2 composites and their antibacterial properties

Abstract

Present work is devoted to investigation of structure and functional properties of hybrid nanomaterials based on the TiO2-modified cellulose fibers of cotton. The titania hydrosol was successfully prepared using the titanium tetraisopropoxide as precursor and the nitric acid as peptizing agent via the low-temperature sol-gel synthesis in aqueous medium and applied to cotton fabric. For cross-linking of titania nanoparticles to cotton the 1,2,3,4-butanetetracarboxylic acid (BTCA) was used as a spacer. The morphology and composition of the surface pure and TiO2 modified cotton fibers were investigated by the scanning electron microscopy (SEM). The cotton/TiO2 composite was characterized by the dielectric permittivity. For the estimation of total titania concentration, all samples were calcined at 650 degrees C The antimicrobial activity of the treated TiO2 cotton fibers was investigated against Escherichia coli as a model Gram-negative bacteria after exposure to UV-irradiation for 10 min. (C) 2014 Elsevier B.V. All rights reserved.

Keywords

Titania; Cellulose; Cross-linking agent; Modification; Antibacterial activity; Washing durability

Published in

Surface and Coatings Technology
2014, volume: 253, pages: 171-179
Publisher: ELSEVIER SCIENCE SA

SLU Authors

• Galkina, Olga

  • Department of Molecular Sciences, Swedish University of Agricultural Sciences
    
  • Russian Academy of Sciences

• Seisenbaeva, Gulaim

  • Department of Molecular Sciences, Swedish University of Agricultural Sciences
    

• Kessler, Vadim

  • Department of Molecular Sciences, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Microbiology
Materials Chemistry

Publication identifier

• DOI: https://doi.org/10.1016/j.surfcoat.2014.05.033

Permanent link to this page (URI)

https://res.slu.se/id/publ/60372