Magnesium oxide/silver nanoparticles reinforced poly(butylene succinate-co-terephthalate) biofilms for food packaging applications
| Autor: | Jie Zhang, Ruijie Guo, Wei Li, Chenglin Cao, Lan Xie, Hong Yan, Baobi Li, Yibo Wang |
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| Rok vydání: | 2021 |
| Předmět: |
Microbiology (medical)
Materials science Nanocomposite Polymers and Plastics Magnesium Thermal decomposition Nanoparticle chemistry.chemical_element Silver nanoparticle Polybutylene succinate Biomaterials Oxygen transmission rate chemistry Chemical engineering Ultimate tensile strength Safety Risk Reliability and Quality Food Science |
| Zdroj: | Food Packaging and Shelf Life. 30:100748 |
| ISSN: | 2214-2894 |
| Popis: | Magnesium oxide (MgO)/ silver (Ag) nanoparticles (NPs) were synthesized and incorporated into poly(butylene succinate-co-terephthalate) (PBST) matrix to prepare PBST/MgO/Ag nanocomposite films by solvent casting. The effects of nanofillers on physical, antibacterial, and cherry tomato preservation properties of the PBST matrix were studied. The introduction of nanofillers effectively enhanced the thermal, mechanical, and barrier properties of the PBST matrix. Optimal properties were achieved by 3% (w/w) MgO/Ag NPs content. Their initial decomposition temperature, elongation at break, tensile strength, water vapor permeability, and oxygen transmission rate were 343.3 °C, 544.94 %, 31.57 MPa, 1.61 × 10−11 g•m/m2•s•Pa, and 4.01 × 10−11 Barrer, respectively. Owing to the enhanced antibacterial activities of the nanofillers, PBST/MgO/Ag possessed superior antibacterial activities against Gram-positive bacteria (Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli and Salmonella para-typhi B). Cherry tomato preservation experiments proved the excellent preservation capability of PBST/MgO/Ag films. These findings indicated that the nanocomposites possessed potential prospects in packaging. |
| Databáze: | OpenAIRE |
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