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

SURFACE & COATINGS TECHNOLOGY

卷:253

Article

Galkina, O. L.^1,2  Sycheva, A.³  Blagodatskiy, A.⁴  Kaptay, G.^5,6  Katanaev, V. L.^4,7  Seisenbaeva, G. A.²  Kessler, V. G.²  Agafonov, A. V.¹ 

[1] Russian Acad Sci, Inst Solut Chem, Ivanovo 153045, Russia

[2] Swedish Univ Agr Sci, Dept Chem, S-75007 Uppsala, Sweden

[3] Hungarian Acad Sci, MTA ME Mat Sci Res Grp, Miskolc, Hungary

[4] Russian Acad Sci, Inst Prot Res, Pushchino 142290, Russia

[5] Univ Miskolc, Dept Nanotechnol, H-3515 Miskolc, Hungary

[6] Bay Zoltan Appl Res Nonprofit Ltd, Miskolc, Hungary

[7] Univ Lausanne, Dept Pharmacol & Toxicol, CH-1005 Lausanne, Switzerland

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

DOI  :  10.1016/j.surfcoat.2014.05.033

来源: Elsevier

【 摘 要 】

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.

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