Sonochemical coating of textiles with metal oxide nanoparticles for antimicrobial fabrics
AssigneeBar-Ilan University
InventorsAharon Gedanken, Yeshayahu Nitzan, Ilana Perelshtein, Nina Perkas, Guy Applerot
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Abstract
We disclose a system for preparing antimicrobial fabrics, coated with metal oxide nanoparticles by means of a novel sonochemical method. These antibacterial fabrics are widely used for production of outdoor clothes, under-wear, bed-linen, bandages, etc. The deposition of metal oxides known to possess antimicrobial activity, namely ZnO, MgO and CuO, can significantly extent the applications of textile fabrics and prolong the period of their use. By means of the novel sonochemical method disclosed here, uniform deposition of metal oxide nanoparticles is achieved simply.
Claims17
A method comprising:
- immersing a textile in a mixture of metal acetate (M(AC)2) added to a water-ethanol solution;
- adjusting a pH of the mixture to a range of about 8-10 by adding aqueous ammonia;
- and
- ultrasonically irradiating the mixture via ultrasonic waves at a frequency of approximately 20 kHz, the ultrasonic waves
- (i) sonochemically causing bubbles to form in the mixture;
- and
- (ii) sonochemically causing the bubbles to collapse,
- wherein the collapsing of the bubbles:
- create metal oxide (MO) nanoparticles from the M(AC)2;
- and
- form microjets near fibers of the textile that embed the MO nanoparticles into the fibers of the textile.
A method, comprising:
- immersing a textile in a mixture of metal acetate (M(AC)2) added to a water-ethanol solution;
- adjusting a pH of the mixture to a range of about 8-10 by adding aqueous ammonia;
- and
- ultrasonically irradiating the mixture via ultrasonic waves at a frequency of approximately 20 kHz, the ultrasonic waves
- (i) sonochemically causing bubbles to form in the mixture;
- and
- (ii) sonochemically causing the bubbles to collapse,
- wherein the collapsing of the bubbles form microjets near a surface of the textile that embed MO nanoparticles in the mixture into the fibers of the textile.
A method, comprising:
- immersing a textile in a mixture of metal acetate (M(AC)2) added to a water-ethanol solution;
- forming metal oxide (MO) nanoparticles by adjusting a pH of the mixture to a range of about 8-10 by adding aqueous ammonia;
- and
- ultrasonically irradiating the mixture via ultrasonic waves at a frequency of approximately 20 kHz, the ultrasonic waves
- (i) sonochemically causing bubbles to form in the mixture;
- and
- (ii) sonochemically causing the bubbles to collapse,
- wherein the collapsing of the bubbles form microjets near a surface of the textile that embed the MO nanoparticles into the fibers of the textile.
A method, comprising:
- immersing a textile in a mixture of metal acetate M(AC)2 added to a water-ethanol solution;
- adjusting a pH of the mixture to a range of about 8-10 by adding aqueous ammonia;
- and
- sonochemically forming bubbles in the mixture by ultrasonically irradiating the mixture with ultrasonic waves at a frequency of approximately 20 kHz;
- and
- sonochemically causing the bubbles to collapse so as form microjets near a surface of fibers of the textile, the microjets embedding MO nanoparticles in the mixture into fibers of the textile.
Dependencies are inferred from the claim text.