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Article

Water-Resistant Latex Coatings: Tuning of Properties by Polymerizable Surfactant, Covalent Crosslinking and Nanostructured ZnO Additive

1
Institute of Chemistry and Technology of Macromolecular Materials, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
2
Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prosecká 809/76, 190 00 Prague, Czech Republic
3
Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
4
Centre of Polymer Systems, Tomas Bata University in Zlín, Třída Tomáše Bati 5678, 760 01 Zlín, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editor: Joseph L. Keddie
Coatings 2021, 11(3), 347; https://doi.org/10.3390/coatings11030347
Received: 1 March 2021 / Revised: 11 March 2021 / Accepted: 15 March 2021 / Published: 18 March 2021
(This article belongs to the Collection Coatings: 10th Anniversary)
This paper deals with the development of acrylic latexes providing high-performance water-resistant coatings. For this purpose, mutual effects of anionic surfactant type (ordinary and polymerizable), covalent intra- and/or interparticle crosslinking (introduced by allyl methacrylate copolymerization and keto-hydrazide reaction, respectively) and ionic crosslinking (provided by nanostructured ZnO additive) were investigated. The latexes were prepared by the standard emulsion polymerization of methyl methacrylate, butyl acrylate and methacrylic acid as the main monomers. The addition of surface-untreated powdered nanostructured ZnO was performed during latex synthesis, resulting in stable latexes comprising dispersed nanosized additive in the content of ca 0.9−1.0 wt.% (based on solids). The coating performance with emphasis on water resistance was evaluated. It was determined that the application of the polymerizable surfactant improved coating adhesion and water-resistance, but it wasn′t able to ensure high water-resistance of coatings. Highly water-resistant coatings were obtained provided that covalent intra- and interparticle crosslinking together with ionic crosslinking were employed in the coating composition, forming densely crosslinked latex films. Moreover, coatings comprising nanostructured ZnO additive displayed a significant antibacterial activity and improved solvent resistance. View Full-Text
Keywords: acrylic latex; crosslinking; keto-hydrazide reaction; polymerizable surfactant; ZnO nanoparticles; water resistance; water whitening; antibacterial activity acrylic latex; crosslinking; keto-hydrazide reaction; polymerizable surfactant; ZnO nanoparticles; water resistance; water whitening; antibacterial activity
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MDPI and ACS Style

Machotová, J.; Kalendová, A.; Steinerová, D.; Mácová, P.; Šlang, S.; Šňupárek, J.; Vajdák, J. Water-Resistant Latex Coatings: Tuning of Properties by Polymerizable Surfactant, Covalent Crosslinking and Nanostructured ZnO Additive. Coatings 2021, 11, 347. https://doi.org/10.3390/coatings11030347

AMA Style

Machotová J, Kalendová A, Steinerová D, Mácová P, Šlang S, Šňupárek J, Vajdák J. Water-Resistant Latex Coatings: Tuning of Properties by Polymerizable Surfactant, Covalent Crosslinking and Nanostructured ZnO Additive. Coatings. 2021; 11(3):347. https://doi.org/10.3390/coatings11030347

Chicago/Turabian Style

Machotová, Jana, Andréa Kalendová, Denisa Steinerová, Petra Mácová, Stanislav Šlang, Jaromír Šňupárek, and Jan Vajdák. 2021. "Water-Resistant Latex Coatings: Tuning of Properties by Polymerizable Surfactant, Covalent Crosslinking and Nanostructured ZnO Additive" Coatings 11, no. 3: 347. https://doi.org/10.3390/coatings11030347

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