US 11,746,462 B2
Method for making antimicrobial article
Khaled Salama, Dammam (SA); and Reem Y. Al Jindan, Dammam (SA)
Assigned to Imam Abdulrahman Bin Faisal University, Dammam (SA)
Filed by Imam Abdulrahman Bin Faisal University, Dammam (SA)
Filed on Mar. 16, 2022, as Appl. No. 17/696,492.
Application 17/696,492 is a continuation of application No. 17/308,161, filed on May 5, 2021, granted, now 11,306,430.
Application 17/308,161 is a continuation of application No. 16/161,943, filed on Oct. 16, 2018, granted, now 11,072,884.
Prior Publication US 2022/0213644 A1, Jul. 7, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. D06M 11/46 (2006.01); D06M 11/38 (2006.01); D06M 13/144 (2006.01); D06M 10/00 (2006.01); D06M 10/06 (2006.01); D06M 10/08 (2006.01); D06M 13/188 (2006.01); D06M 101/06 (2006.01)
CPC D06M 11/46 (2013.01) [D06M 10/001 (2013.01); D06M 10/06 (2013.01); D06M 10/08 (2013.01); D06M 11/38 (2013.01); D06M 13/144 (2013.01); D06M 13/188 (2013.01); D06M 2101/06 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for making an antimicrobial article from a woven cotton textile, the method comprising:
contacting the woven cotton textile with an inorganic base to produce a treated cotton textile;
rinsing the treated cotton textile to produce a rinsed cotton textile;
depositing a TiO2 coating composition onto the rinsed cotton textile, wherein the TiO2 coating composition contains TiO2 nanoparticles, methanol, and an organic acid, and the depositing forms a coated textile, wherein the TiO2 coating composition fully coats the cotton textile during the depositing and the TiO2 coating composition contains 60-90 wt % of the organic acid and 10-40 wt % of the methanol relative to a total weight of the TiO2 coating composition;
irradiating the coated textile with a UV light to form an antimicrobial textile, wherein the irradiating forms hydrogen bonds between the TiO2 nanoparticles and surfaces of individual fibrils of the cotton textile; and
forming a bandage, a cast, a gown, a lab coat, a mask, a face covering, a bedcovering, or a head covering from the antimicrobial textile to make the antimicrobial article;
wherein the TiO2 coating composition contains the TiO2 nanoparticles at a concentration of 10-100 ppm by weight, and the TiO2 nanoparticles are anatase TiO2 nanoparticles having an average particle diameter of less than 21 nm.