A multilevel antimicrobial coating based on polymer-encapsulated ClO(2)

Langmuir : the ACS Journal of Surfaces and Colloids
Yan LiJoseph K C Kwan

Abstract

A multilevel antimicrobial coating with "release-killing", "contact-killing" and "anti-adhesion" properties was prepared from polymer-encapsulated chlorine dioxide (ClO(2)), water-in-oil-in-water (w/o/w) double emulsion. A slow sustained release of gaseous ClO(2) at a rate sufficient to inhibit bacterial growth (approximately 1300 microg of ClO(2).g(-1).day(-1)) was demonstrated for a prolonged period of time (i.e., 28 days). Touch and infectious droplets triggered an increased release of the biocides at the sites of contamination, resulting in rapid disinfection. Zinc chloride (i.e., 30 ppm) was added to provide "contact-killing" properties, while bacterial adhesion was prevented by the Pluronic polymer used to encapsulate ClO(2). The new antimicrobial coating is effective against Gram positive and Gram negative bacteria, including Bacillus subtilis , Staphylococcus aureus , and Escherichia coli. A greater than 5 log (i.e., >or= 99.999%) reduction of viable bacteria was obtained at a short contact time of 10 min.

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Citations

Oct 20, 2011·ACS Applied Materials & Interfaces·Alideertu DongYuxin Chen
Mar 13, 2012·ACS Applied Materials & Interfaces·Shuai HeYujun Feng
May 31, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Stefano FarrisLuciano Piergiovanni
Jun 12, 2013·Annual Review of Chemical and Biomolecular Engineering·Alyssa M Larson, Alexander M Klibanov
Sep 27, 2012·Colloids and Surfaces. B, Biointerfaces·Swarna JaiswalPatrick McHale
Jun 24, 2014·Risk Analysis : an Official Publication of the Society for Risk Analysis·Gin Nam Sze-ToChristopher Y H Chao
Oct 14, 2016·Journal of Agricultural and Food Chemistry·Zhifeng BaiAdam L Grzesiak
May 10, 2019·Nanomaterials·Anna StavitskayaRawil Fakhrullin
Sep 9, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Saheli Chakraborty, S Ramakrishnan

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