Copper nanoparticles in glycerol-polyvinyl alcohol matrix: In situ preparation, stabilisation and antimicrobial activity
| Autor: | Marie Švecová, Vilém Bartůněk, Pavel Ulbrich, Jiří Svoboda, Juraj Malinčík, Michal Kohout, Silvie Rimpelová, Kryštof Dobrovolný |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Nanocomposite Materials science Mechanical Engineering Metals and Alloys chemistry.chemical_element Nanoparticle 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Copper Polyvinyl alcohol 0104 chemical sciences Catalysis Matrix (chemical analysis) chemistry.chemical_compound chemistry Mechanics of Materials Materials Chemistry Organic chemistry Azide 0210 nano-technology Nuclear chemistry |
| Zdroj: | Journal of Alloys and Compounds. 697:147-155 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2016.12.144 |
| Popis: | Herein, we present a simple and affordable green synthesis of a nanocomposite material consisting of copper nanoparticles stabilized in a polyvinyl alcohol-glycerol matrix. TEM, UV-Vis and XRPD (X-ray Powder Diffraction) techniques were used to characterize the nanoparticles; properties of the polymer matrix were studied by NMR, IR and Raman spectroscopy as well as DSC measurements. The nanocomposite can be produced in two forms: gel and moldable plastic. Both the forms can be easily shaped at elevated temperature. The materials show very good long-term stability in air, protecting the produced copper nanoparticles from oxidation. Furthermore, we proved the application potential of the new nanocomposite as catalyst in copper catalyzed Huisgen 1,3-dipolar cycloaddition of azide and alkyne (frequently used in click-chemistry ). In addition, antibacterial tests have proven inhibition of bacterial growth of both Gram-negative ( Escherichia coli ) and Gram-positive ( Enterococcus faecalis ) bacteria in the presence of the nanocomposite. |
| Databáze: | OpenAIRE |
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