Cellulose acetate-based composites with antimicrobial properties from embedded molybdenum trioxide particles
| Autor: | Josef Peter Guggenbichler, Cordt Zollfrank, Shahram Shafaei, Jörg Dörrstein |
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| Rok vydání: | 2016 |
| Předmět: |
inorganic chemicals
Staphylococcus aureus Materials science Surface Properties Composite number 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Applied Microbiology and Biotechnology law.invention Molybdenum trioxide chemistry.chemical_compound Biopolymers law Specific surface area Escherichia coli Calcination Composite material Cellulose Molybdenum Oxides 021001 nanoscience & nanotechnology Antimicrobial Cellulose acetate 0104 chemical sciences Anti-Bacterial Agents chemistry Pseudomonas aeruginosa engineering bacteria Antimicrobial surface Biopolymer 0210 nano-technology |
| Zdroj: | Letters in applied microbiology. 64(1) |
| ISSN: | 1472-765X |
| Popis: | The objective of this research was to develop novel cellulose acetate (biopolymer) composite materials with an excellent antimicrobial activity by embedding molybdenum trioxide particles with unique high specific surface area. High surface area molybdenum trioxide particles were prepared from freshly precipitated molybdenum trioxide dihydrate (MoO3·2H2O) and subsequent calcination at 340°C under H2/N2 gas. Microbiological evaluation against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa were performed applying a roll-on test and excellent antimicrobial activities were determined for composites with embedded anhydrous molybdenum trioxide with a high specific surface area. Cellulose acetate composites comprising MoO3 particles can eliminate three harmful bacteria as a result of the release of protons from the material and surface enlargement of the molybdenum trioxide particles. The findings support a proposed antimicrobial mechanism based on local acidity increase due to large specific surface areas. Significance and Impact of the Study In this study, development of a novel thermoplastic bio-based composite with excellent antimicrobial surface properties is investigated. To the best of our knowledge, this is the first report to evaluate the antimicrobial properties of molybdenum trioxide embedded into a cellulose acetate as biopolymer matrix. The developed composites might step up to innovative applications used in modern medical and public environments. |
| Databáze: | OpenAIRE |
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