Počet záznamů: 1  

Water-resistant latex coatings: tuning of properties by polymerizable surfactant, covalent crosslinking and nanostructured ZnO additive

  1. 1.
    0541857 - ÚTAM 2022 RIV CH eng J - Článek v odborném periodiku
    Machotová, J. - Kalendová, A. - Steinerová, D. - Mácová, Petra - Šlang, S. - Šňupárek, J. - Vajďák, J.
    Water-resistant latex coatings: tuning of properties by polymerizable surfactant, covalent crosslinking and nanostructured ZnO additive.
    Coatings. Roč. 11, č. 3 (2021), č. článku 347. E-ISSN 2079-6412
    Institucionální podpora: RVO:68378297
    Klíčová slova: acrylic latex * crosslinking * keto-hydrazide reaction * polymerizable surfactant * ZnO nanoparticles * water resistance * water whitening * antibacterial activity
    Obor OECD: Polymer science
    Impakt faktor: 3.236, rok: 2021
    Způsob publikování: Open access
    https://doi.org/10.3390/coatings11030347

    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 was not 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.
    Trvalý link: http://hdl.handle.net/11104/0319364

     
     
Počet záznamů: 1  

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