Multifunctional bionanocomposite films of poly (lactic acid), cellulose nanocrystals and silver nanoparticles
Abstract
Nanocomposite films were prepared by the addition of cellulose nanocrystals (CNCs) eventually surfactant modified (s-CNC) and silver (Ag) nanoparticles in the polylactic acid (PLA) matrix using melt extrusion followed by a film formation process. Multifunctional composite materials were investigated in terms of morphological, mechanical, thermal and antibacterial response. The nanocomposite films maintained the transparency properties of the PLA matrix. Thermal analysis showed increased values of crystallinity in the nanocomposites, more evident in the s-CNC based formulations that had the highest tensile Young modulus. The presence of surfactant favoured the dispersion of cellulose nanocrystals in the polymer matrix and the nucleation effect was remarkably enhanced. Moreover, an antibacterial activity against Staphylococcus aureus and Escherichia coli cells was detected for ternary systems, suggesting that these novel nanocomposites may offer good perspectives for food packaging applications which require an antibacterial effect constant over time.
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PLA has good physical properties and can be used to yield various plastic products, such as fast-food lunch boxes and fabrics for industrial and civilian use.
“Interest in its mass production stems from its good performance; for example, polylactic acid has good physical properties and can be used to yield various plastic products, such as fast-food lunch boxes, and fabrics for industrial and civilian use [44,48,49,50].”
From Synthesis and Biological Application of Polylactic Acid (2020) · cites this paper as [50]
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Synthesis and Biological Application of Polylactic Acid
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- Authors
- Fortunati, E., Armentano, I., Zhou, Q., Iannoni, A., Saino, E., Visai, L., Berglund, L. A., & Kenny, J. M.
- Affiliations
- University of Perugia (IT)
- Wallenberg Wood Science Center (SE)
- University of Pavia (IT)
- Consejo Superior de Investigaciones Científicas (ES)
- Corresponding author
- Fortunati, E.
- Venue
- Carbohydrate Polymers
- Publisher
- Elsevier BV
- Published
- 2012-01
- Volume
- 87
- Issue
- 2
- Pages
- 1596-1605
- ISSN
- 0144-8617 (ISSN-L)
- OpenAlex
- W2060318481
- Cited by
- 581
- References
- 39
- Citations by year
- 2026: 25 · 2025: 16 · 2024: 27 · 2023: 29 · 2022: 41 · 2021: 38 · 2020: 43 · 2019: 57 · 2018: 51 · 2017: 54 · 2016: 66 · 2015: 40 · 2014: 44 · 2013: 32 · 2012: 18
- FWCI
- 12.31
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Carbohydrate Polymers (publishedVersion)
- UnitusOpen (Tuscia University) (submittedVersion)
- Funders
- INSTM
- International Centre for Studies and Research in Biomedicine (I.C.B.) in Luxembourg
- Regione Lombardia (2010)
- FONDAZIONE ALMA MATER TICINENSIS (2010)
- Topics
- Physical Sciences › Materials Science › Biomaterials › Nanocomposite Films for Food Packaging
- Physical Sciences › Materials Science › Biomaterials › Advanced Cellulose Research Studies
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Keywords
- polylactic acid, cellulose nanocrystals, silver nanoparticles, bionanocomposite films, antibacterial activity, Staphylococcus aureus, Escherichia coli, nucleation effect, crystallinity, tensile modulus, food packaging, transparent films
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