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Your search keyword '"antimicrobial materials"' showing total 4 results
Start Over Descriptor "antimicrobial materials" Journal materials letters
4 results on '"antimicrobial materials"'

1. Facile preparation of composite antimicrobial Al2O3 particles.

Author

Zhang, Tian-Qi, Lu, He-Jie, Jia, Zhi-Qian, Chen, Yi-Li, Peng, Wen-Juan, Li, Suo-Ding, Zhang, Jia-Min, Wang, Hui-Min, and Wen, Jian-Ping

Subjects
*AMMONIUM chloride, *ALUMINUM oxide, *ESCHERICHIA coli, *POLYMERS, *GRAFT copolymers, *1-Methylcyclopropene
Abstract

• Epoxypropyl dimethydodecyl ammonium chloride (EPDDMAC) were grafted on γ-Al 2 O 3 particles. • α-Al 2 O 3 were coated with EVOH and modified with EPDDMAC. • Using the TIPS method, the alumina particles can be completely encapsulated with less polymer. • γ-Al 2 O 3 /EPDDMAC particles and α-Al 2 O 3 @EVOH/EPDDMAC particles showed great antimicrobial performance. Antimicrobial particles can inhibit or kill microorganisms, and have been widely used as antimicrobial filler in coatings and polymers. Herein, we present a facile method to prepare antimicrobial alumina particles by grafting epoxypropyl dimethydodecyl ammonium chloride (EPDDMAC) on γ-Al 2 O 3 or ethylene–vinyl alcohol copolymer (EVOH) coated α-Al 2 O 3.The results show that EPDDMAC can be grafted on γ-Al 2 O 3 or EVOH-coated α-Al 2 O 3 particles effectively, and the grafting rate rises with the increased EPDDMAC amount. The grafted composite particles exhibit excellent antibacterial properties against Escherichia coli and display great potential in antibacterial applications. [ABSTRACT FROM AUTHOR]

Published
2024
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2. Influence of different concentrations of Zn-carbonate phase on physical-chemical properties of antimicrobial agar composite films

Author

Radovanović, Neda, Malagurski, Ivana, Lević, Steva, Nešić, Aleksandra, Cabrera-Barjas, Gustavo, Kalušević, Ana, Nedović, Viktor, Pavlović, Vladimir, Dimitrijević-Branković, Suzana, Radovanović, Neda, Malagurski, Ivana, Lević, Steva, Nešić, Aleksandra, Cabrera-Barjas, Gustavo, Kalušević, Ana, Nedović, Viktor, Pavlović, Vladimir, and Dimitrijević-Branković, Suzana

Abstract

Agar-based composites with different Zn-carbonate mineral phase content were prepared by in situ mineralization and the solvent casting method. The mineral phase within the composite films was identified as hydrozincite, Zn-5(CO3)(2)(OH)(6). The presence of the mineral phase improved, both mechanical and water vapor permeability properties of the obtained composite films, in a concentration-dependent manner. The release of zinc ions from composite films is in accepted levels (up to 2.5%), and sufficient to provide complete inhibition growth of S. Aureus. The results of this study suggest that agar/Zn-carbonate composites could be potentially used as affordable, eco-friendly and functional materials with tunable properties for food packaging, agriculture or biomedical application. In situ procedure offers possibilities for tailoring the physical-chemical properties of composite films, by varying the Zn-mineral phase load.

Published
2019

3. Influence of different concentrations of Zn-carbonate phase on physical-chemical properties of antimicrobial agar composite films

Author

Viktor Nedović, Aleksandra Nesic, Ana Kalušević, Gustavo Cabrera-Barjas, Neda Radovanović, Steva Lević, Suzana Dimitrijević-Branković, Ivana Malagurski, and Vladimir B. Pavlović

Subjects
Materials science, food.ingredient, Composite number, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Mineralization (biology), Biomaterials, food, Antimicrobial materials, Polysaccharides, Polymeric composites, Phase (matter), Agar, General Materials Science, Mechanical Engineering, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Casting, 0104 chemical sciences, Food packaging, Solvent, Chemical engineering, Mechanics of Materials, Hydrozincite, 0210 nano-technology
Abstract

Agar-based composites with different Zn-carbonate mineral phase content were prepared by in situ mineralization and the solvent casting method. The mineral phase within the composite films was identified as hydrozincite, Zn5(CO3)2(OH)6. The presence of the mineral phase improved, both mechanical and water vapor permeability properties of the obtained composite films, in a concentration-dependent manner. The release of zinc ions from composite films is in accepted levels (up to 2.5%), and sufficient to provide complete inhibition growth of S. Aureus. The results of this study suggest that agar/Zn-carbonate composites could be potentially used as affordable, eco-friendly and functional materials with tunable properties for food packaging, agriculture or biomedical application. In situ procedure offers possibilities for tailoring the physical-chemical properties of composite films, by varying the Zn-mineral phase load.

Published
2019

4. Preparation of AgCl/ZnO nano-composite for effective antimicrobial protection of stone-made building elements.

Author

Mu, Baogang, Ying, Xuejie, Petropoulos, Evangelos, and He, Shiying

Subjects
*BUILDING protection, *BUILDING stones, *MICROBIOLOGICALLY influenced corrosion, *PROTECTIVE coatings, *CONSTRUCTION materials, *ZINC oxide
Abstract

• AgCl/ZnO nano-composite was synthesized and used as protective coating for stones. • AgCl/ZnO exhibited efficient antibacterial and antifungal activity. • The long-term exposure test indicated that the antimicrobial activity of AgCl/ZnO is stable in the natural environment. Microbial corrosion of stone-made materials is an emerging concern for modern building elements; similarly, for preservation of cultural heritage. Herein we developed a simplistic method for the preparation of AgCl/ZnO nano-composite, which was then trialed as a potential protective coating for stone building materials. The results showed that AgCl/ZnO-coated stones are highly efficient in inhibiting bacterial and fungal strains' growth. The achieved AgCl/ZnO antimicrobial activity remains stable even after prolonged exposure to the natural environment (60-days). Overall, the results indicate that use of AgCl/ZnO nano-composites is a promising strategy able to minimize, or even nullify, bacterial growth and protect building elements threatened by biodeterioration. [ABSTRACT FROM AUTHOR]

Published
2021
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