The effects of ZnO nanoparticle reinforcement on thermostability, mechanical, and optical properties of the biodegradable PBAT film
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Ting Wang
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Yongchao Li
Abstract
Among various nanomaterials used for food packaging, zinc oxide (ZnO) nanoparticles are one of the best choices due to their high antimicrobial property. However, for biodegradable materials like poly(butylene adipate-co-terephthalate) (PBAT), biodegradability can be limited by the antibacterial function. Thus, in the present study, reinforced PBAT films with different weight percentages (1, 3, and 5 wt%) of ZnO nanoparticles were prepared by the casting process to investigate the effects of ZnO on the thermostability, mechanical, and antimicrobial properties of the PBAT film. The results showed that the small amount of ZnO (1 wt%) reduced the decomposition temperature of the PBAT film by nearly 50 °C, and the thermal stability was significantly decreased with the increasing ZnO content. Melt flow index comparison showed that the ZnO nanoparticles accelerated the room temperature degradation rate of PBAT films. In addition, due to the degradation effect of ZnO nanoparticles, the mechanical properties such as the total percentage of elongation (at break), the tensile strength, and yield strength decreased with the addition of ZnO nanoparticles. The antibacterial test showed that PBAT + 1 wt% ZnO films could achieve high antibacterial activity (R = 6.8) against Escherichia coli. This study is important for controlling the degradation period of biodegradable materials.
Funding source: Department of Education of Liaoning Province
Award Identifier / Grant number: LJ2020029
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Author contributions: Conceptualization and experimental design: L.L., Y.S.; Draft Preparation: T.W., Y.S.; Sample preparation: Y.S., T.W., Y.L.; Mechanical, optical, thermal experiment and data analysis: T.W., Y.S.; Final revision: Y.S.
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Research funding: This research was funded by scientific research funds from Liaoning Education Department (serial number: LJ2020029).
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Conflict of interest statement: The authors declare no conflict of interest.
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Material properties
- The effects of ZnO nanoparticle reinforcement on thermostability, mechanical, and optical properties of the biodegradable PBAT film
- The effect of fibre surface treatment and coupling agents to improve the performance of natural fibres in PLA composites
- Effects of infill pattern and density on wear performance of FDM-printed acrylonitrile-butadiene-styrene parts
- Preparation and assembly
- Study on the thermal insulation performance of the core–shell skeleton graphene oxide/carbon composite aerogel
- Engineering and processing
- Design criteria for the pin-foot ratio for joining adhesion-incompatible polymers using pin-like structures in vibration welding process
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Articles in the same Issue
- Frontmatter
- Material properties
- The effects of ZnO nanoparticle reinforcement on thermostability, mechanical, and optical properties of the biodegradable PBAT film
- The effect of fibre surface treatment and coupling agents to improve the performance of natural fibres in PLA composites
- Effects of infill pattern and density on wear performance of FDM-printed acrylonitrile-butadiene-styrene parts
- Preparation and assembly
- Study on the thermal insulation performance of the core–shell skeleton graphene oxide/carbon composite aerogel
- Engineering and processing
- Design criteria for the pin-foot ratio for joining adhesion-incompatible polymers using pin-like structures in vibration welding process
- Numerical investigation of tubular expansion and swelling elastomers in oil wells
