Novel Active Surface Prepared by Embedded Functionalized Clays in an Acrylate Coating
| Autor: | Rafael Auras, Mehran Ghasemlou, Yining Xia, Jamil Baghdachi, Maria Rubino |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Salmonella typhimurium
Thermogravimetric analysis Materials science Polymers Surface Properties Ultraviolet Rays Nanoparticle engineering.material Polypropylenes Bacterial Adhesion Diffusion chemistry.chemical_compound Surface-Active Agents Coating Microscopy Electron Transmission X-Ray Diffraction Polymer chemistry Materials Testing Spectroscopy Fourier Transform Infrared Nanotechnology General Materials Science chemistry.chemical_classification Polypropylene Acrylate Polymer Active surface Silanes Listeria monocytogenes Thermogravimetry Agar chemistry Chemical engineering Acrylates engineering Clay Nanoparticles Aluminum Silicates Ampicillin |
| Zdroj: | ACS applied materialsinterfaces. 7(44) |
| ISSN: | 1944-8252 |
| Popis: | The research on a self-decontaminating surface has received significant attention because of the growth of pathogenic microorganisms on surfaces. In this study, a novel and simple technique for producing an active surface with antimicrobial functionality is demonstrated. A tethering platform was developed by grafting the biocide ampicillin (Amp) to a nanoclay and dispersing the nanoclay in a UV-curable acrylate coating applied on polypropylene films as the substrate. A coupling agent, [3-(glycidyloxy)propyl]trimethoxysilane, was used as a linker between the nanoclay and Amp. The Amp-functionalized clay was further modified with an organic surfactant to improve the compatibility with the coating. Several characterization assays, such as Fourier infrared transform analysis, thermogravimetric analysis, and X-ray diffraction, were conducted to confirm the presence of Amp in the nanoclay. Transmission electron microscopy images revealed that the clay particles were well dispersed in the coating and had a partial exfoliated morphology. The active coating surface was effective in inhibiting the growth of Gram-positive Listeria monocytogenes and Gram-negative Salmonella Typhimurium via contact. These findings suggest the potential for the development of active surfaces with the implementation of nanotechnology to achieve diverse functionalities. |
| Databáze: | OpenAIRE |
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