Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Ag2O-Containing Biocidal Interpolyelectrolyte Complexes on Glass Surfaces – Adhesive Properties of the Coatings

Vladislava A. Pigareva
ORCID logo ,
Oleg S. Paltsev
,
Valeria I. Marina
,
Dmitrii A. Lukianov
,
Andrei V. Moiseenko
,
Nikita M. Shchelkunov
ORCID logo ,
Andrey A. Fedyanin
ORCID logo ,
Andrey V. Sybachin
* ORCID logo
Version 1 : Received: 26 October 2023 / Approved: 26 October 2023 / Online: 26 October 2023 (16:12:03 CEST)

A peer-reviewed article of this Preprint also exists.

Pigareva, V.A.; Paltsev, O.S.; Marina, V.I.; Lukianov, D.A.; Moiseenko, A.V.; Shchelkunov, N.M.; Fedyanin, A.A.; Sybachin, A.V. Ag2O-Containing Biocidal Interpolyelectrolyte Complexes on Glass Surfaces—Adhesive Properties of the Coatings. Polymers 2023, 15, 4690. Pigareva, V.A.; Paltsev, O.S.; Marina, V.I.; Lukianov, D.A.; Moiseenko, A.V.; Shchelkunov, N.M.; Fedyanin, A.A.; Sybachin, A.V. Ag2O-Containing Biocidal Interpolyelectrolyte Complexes on Glass Surfaces—Adhesive Properties of the Coatings. Polymers 2023, 15, 4690.

Abstract

Biocidal coatings are of great interest to the healthcare system. In this work, the biocidal activity of coatings based on a complex biocide containing polymer and inorganic active antibacterial c omponents was studied. Silver oxide was distributed in a matrix of a positively charged interpolyelectrolyte complex (IPEC) of polydiallyldimethylammonium chloride (PDADMAC) and sodium polystyrene sulfonate (PSS) using ultrasonic dispersion, forming nanoparticles with an average size of 5-6 nm. The formed nanoparticles in the matrix are not subject to agglomeration and changes in morphology during storage. It was found that the inclusion of silver oxide in a positively charged IPEC allows a 4-fold increase in the effectiveness of the complex biocide against E. coli K12 in comparison with the biocidal effect of PDADMAC and IPEC. Polycation, IPEC and the IPEC/Ag2O ternary complex form coatings on the glass surface due to electrostatic adsorption. Adhesive and cohesive forces in the resulting coatings were studied on micron-scale coatings using dynamometry. It was found that the stability of the coating is determined primarily by adhesive interactions. At the macro level, it is not possible to reliably identify the role of IPEC formation on adhesion. On the other hand, the use of the optical tweezers method makes it possible to analyze macromolecules in submicron scale and to evaluate the multiple increase in adhesive forces when forming a coating from IPEC compared to coatings from PDADMAC. Thus, the application of ternary IPEC/Ag2O complexes makes it possible to obtain coatings with increased antibacterial action and improved adhesive characteristics.

Keywords

functional coating; biocide; polycation; polyanion; interfacial complex; coating; nanoparticles; interpolyelectrolyte complex; optical tweezer; adhesion

Subject

Chemistry and Materials Science, Surfaces, Coatings and Films

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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