Antibacterial performance of hybrid nanocomposite coatings containing clay and silver nanoparticles

Mejía, Hugo Fernando Giraldo; Seitz, Karina Herrera; Valdes, Matias Hernan; Uheida, Abdusalam; Procaccini, Raúl Ariel; Pellice, Sergio Antonio

doi:10.1016/j.colsurfa.2021.127354

Cited by 2 publications

(1 citation statement)

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“…A current trend topic in the world of organic coatings is represented by the addition of silver-based fillers [33][34][35]. This phenomenon is mainly due to the escalation of the SARS-CoV-2 pandemic, which has led scientific research to seek a solution to the spread and transmission of pathogenic microorganisms through surface contamination.…”

Section: Introductionmentioning

confidence: 99%

Durability of Acrylic Cataphoretic Coatings Additivated with Colloidal Silver

Calovi

Rossi

2022

Coatings

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In this work, colloidal silver has been added into an acrylic clear cataphoretic bath, evaluating the effect of two different filler amounts on the durability of the composite coatings. The three series of samples were characterized by electron microscopy to assess the possible change in morphology introduced by the silver-based additive. The protective properties of the coatings were evaluated by a salt spray chamber exposure and electrochemical impedance spectroscopy measurements, evidencing the negative effect provided by high amount of silver, which introduced discontinuities in the acrylic matrix. Finally, the durability of composite coatings was studied by exposing them to UV-B radiation, observing a strong phenomenon of silver degradation. Although the coating containing high concentrations of silver demonstrated poor durability, this study revealed that small amounts of silver can be used to provide particular aesthetic features, but also to improve the protective performance of cataphoretic coatings.

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Section: Introductionmentioning

confidence: 99%