Abstract
The most effective means to protect against bacterial invasion and to reduce the risk of healthcare-associated infections are antibacterial components synthesis. In this study, a novel process for the synthesis of organic–inorganic hybrid coatings containing silver nanoparticles is presented. Silver nanoparticles and polymer formation proceeds simultaneously through the in situ photoreduction of silver salt to silver nanoparticles and UV-crosslinking of bifunctional aliphatic silicone acrylate. The nanocomposite films with 0.5–1.43 wt % of silver nanoparticles concentration were obtained and investigated. The formation of silver nanoparticles in polymer matrix was confirmed via UV-visible spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy, scanning electron spectroscopy, and energy dispersive spectroscopy. Our investigations clearly show the formation of silver nanoparticles in silicone acrylate network. Direct photoreduction of silver salt by UV-radiation in the organic media produced silver nanoparticles exhibiting cubic crystal structure. The size of nanoparticles was determined to be near 20 ± 5 nm. The antibacterial activities of coatings were determined using the disc diffusion and direct contact methods. UV-curable silicone acrylate hybrid coatings exhibited antibacterial activity against harmful bacteria strains.
Highlights
Hybrid materials containing organic–inorganic constituents have gained increased interest due to their exceptional multifunctional properties
In order to confirm the presence of silver nanoparticles in the fabricated UV-cured silicone acrylate composite structure, UV-visible spectroscopy was used in the first instance
The aliphatic silicone acrylate composites containing silver nanoparticles can be synthesized via in-situ photopolymerization technique
Summary
Hybrid materials containing organic–inorganic constituents have gained increased interest due to their exceptional multifunctional properties. Different combinations allow the achievement of exceptional electrical, catalytic, antibacterial, radiation-resistant, optical, thermal, and mechanical properties. The potential applications of these materials can cover multiple fields, ranging from engineering to medical [1,2,3]. Hybrid organic–inorganic materials can be defined as nanocomposites obtained by intimate mixing of organic and inorganic components. The common route for the synthesis of these nanocomposites corresponds to the use of bridged and polyfunctional precursors, very convenient sol–gel chemistry, and hydrothermal synthesis [4]. More sophisticated techniques include the use of self-assembly, integrative synthesis routes, or templated growth by organic surfactants [5]
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