Eco-Friendly Packaging Innovations: Integrating Natural Fibers and ZnO Nanofillers in Polylactic Acid (PLA) Based Green Composites - A Review

Dejene, Bekinew Kitaw; Gudayu, Adane Dagnaw

doi:10.1080/25740881.2024.2350686

Polymer-Plastics Technology and Materials

2024

DOI: 10.1080/25740881.2024.2350686

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Eco-Friendly Packaging Innovations: Integrating Natural Fibers and ZnO Nanofillers in Polylactic Acid (PLA) Based Green Composites - A Review

Bekinew Kitaw Dejene,

Adane Dagnaw Gudayu

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2024

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Cited by 4 publications

References 205 publications

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Development of biocompatible packaging material: starch/PVA-based bio-composite enhanced with hydroxypropyl methylcellulose

Kader,

Shahruzzaman,

Parvin

et al. 2024

Polymer-Plastics Technology and Materials

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Development of biocompatible packaging material: starch/PVA-based bio-composite enhanced with hydroxypropyl methylcellulose

Kader,

Shahruzzaman,

Parvin

et al. 2024

Polymer-Plastics Technology and Materials

View full text Add to dashboard Cite

Achieving performance and functionality in PLA-based packaging: Insights from hybrid composites with false banana (Enset) fiber and ZnO nanoparticles

Dejene,

Gudayu

2024

Journal of Thermoplastic Composite Materials

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The use of poly(lactic acid) (PLA)-based composites reinforced with natural fibers is becoming increasingly popular in sustainable packaging. However, these materials often lack adequate barriers and desirable functional properties. Concurrently, zinc oxide nanoparticles (ZnO NPs) have been incorporated into PLA-based composites to develop functional packaging films. Despite this progress, there is a gap in the literature regarding packaging materials that require both functional and performance properties, specifically those that combine natural fibers and ZnO NPs within the PLA matrix. This study aims to develop and optimize the effects of ZnO nanofillers and false banana, also called Enset fibers (EFs) as hybrid reinforcements in PLA matrices. A central composite design (CCD) approach was used to evaluate the effects of EFs at three levels (5 %, 15 %, and 25 % w/w) and ZnO NPs at three levels (0 %, 5 %, and 10 % w/w) on the performance (tensile and flexural strength) and functional properties (water and antibacterial activity) of the resulting nanocomposite materials. The findings indicate that the inclusion of ZnO NPs significantly enhanced both the performance and functional properties of the nanocomposites, whereas the inclusion of EFs improved the performance properties but reduced the functional properties of the nanocomposites. Ultimately, this study identified an optimal formulation for producing durable and functional composites for various packaging applications.

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Reviewing the manufacturing challenges and scientific debates: Insights into the antibacterial capabilities and potential applications of PLA/ZnO nanocomposites

Dejene

2024

Journal of Thermoplastic Composite Materials

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The growing demand for antibacterial materials, particularly for biomedical and packaging applications, has prompted significant interest in biodegradable alternatives to traditional plastics. Among these, poly(lactic acid) (PLA) is a biocompatible and biodegradable polymer that is increasingly being recognized as a promising matrix material for the development of functional nanocomposites. Notably, the incorporation of zinc oxide (ZnO) nanoparticles into PLA matrices enhances their antibacterial functionality, providing effective solutions against both Gram-positive and Gram-negative bacteria. However, challenges persist in manufacturing PLA/ZnO nanocomposites, including achieving uniform nanoparticle dispersion, ensuring interfacial compatibility, and addressing scalability issues for industrial applications. Moreover, ongoing scientific debates regarding the exact antibacterial mechanisms of ZnO, such as reactive oxygen species (ROS) generation, physical disruption of bacterial membranes, and zinc ion release, complicate the efforts to optimize these materials. This review summarizes the current state of research on PLA/ZnO nanocomposites, exploring both the manufacturing challenges and the scientific discussions regarding their antibacterial mechanisms. Consequently, by identifying unresolved questions and consolidating existing knowledge, this review provides valuable insights for researchers and engineers seeking to advance the development of effective antibacterial materials, ultimately contributing to solutions to global health and environmental challenges.

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Eco-Friendly Packaging Innovations: Integrating Natural Fibers and ZnO Nanofillers in Polylactic Acid (PLA) Based Green Composites - A Review

Cited by 4 publications

References 205 publications

Development of biocompatible packaging material: starch/PVA-based bio-composite enhanced with hydroxypropyl methylcellulose

Development of biocompatible packaging material: starch/PVA-based bio-composite enhanced with hydroxypropyl methylcellulose

Achieving performance and functionality in PLA-based packaging: Insights from hybrid composites with false banana (Enset) fiber and ZnO nanoparticles

Reviewing the manufacturing challenges and scientific debates: Insights into the antibacterial capabilities and potential applications of PLA/ZnO nanocomposites

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