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Open AccessEditor’s ChoiceArticle

Influence of Tea Tree Essential Oil and Poly(ethylene glycol) on Antibacterial and Physicochemical Properties of Polylactide-Based Films

1
Chair of Physical Chemistry and Physicochemistry of Polymers, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7 Street, 87-100 Toruń, Poland
2
Chair of Genetics, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska 1 Street, 87-100 Toruń, Poland
3
Department of Production Engineering, Faculty of Mechanical Engineering, Lublin University of Technology, 20-618 Lublin, Poland
*
Author to whom correspondence should be addressed.
Materials 2020, 13(21), 4953; https://doi.org/10.3390/ma13214953
Received: 5 October 2020 / Revised: 25 October 2020 / Accepted: 1 November 2020 / Published: 4 November 2020
(This article belongs to the Special Issue Modification and Processing of Biodegradable Polymers)
The aim of the study was to establish the influence of poly(ethylene glycol) (PEG) on the properties of potential biodegradable packaging materials with antibacterial properties, based on polylactide (PLA) and tea tree essential oil (TTO). The obtained polymeric films consisted of PLA, a natural biocide, and tea tree essential oil (5–20 wt. %) was prepared with or without an addition of 5 wt. % PEG. The PLA-based materials have been tested, taking into account their morphology, and their thermal, mechanical and antibacterial properties against Staphylococcus aureus and Escherichia coli. It was established that the introduction of a plasticizer into the PLA–TTO systems leads to an increase in tensile strength, resistance to deformation, as well an increased thermal stability, in comparison to films modified using only TTO. The incorporation of 5 wt. % PEG in the PLA solution containing 5 wt. % TTO allowed us to obtain a material exhibiting a satisfactory antibacterial effect on both groups of representative bacteria. The presented results indicated a beneficial effect of PEG on the antibacterial and functional properties of materials with the addition of TTO. View Full-Text
Keywords: polylactide; tea tree essential oil; poly(ethylene glycol); packaging material; antibacterial films polylactide; tea tree essential oil; poly(ethylene glycol); packaging material; antibacterial films
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MDPI and ACS Style

Tarach, I.; Olewnik-Kruszkowska, E.; Richert, A.; Gierszewska, M.; Rudawska, A. Influence of Tea Tree Essential Oil and Poly(ethylene glycol) on Antibacterial and Physicochemical Properties of Polylactide-Based Films. Materials 2020, 13, 4953. https://doi.org/10.3390/ma13214953

AMA Style

Tarach I, Olewnik-Kruszkowska E, Richert A, Gierszewska M, Rudawska A. Influence of Tea Tree Essential Oil and Poly(ethylene glycol) on Antibacterial and Physicochemical Properties of Polylactide-Based Films. Materials. 2020; 13(21):4953. https://doi.org/10.3390/ma13214953

Chicago/Turabian Style

Tarach, Iwona; Olewnik-Kruszkowska, Ewa; Richert, Agnieszka; Gierszewska, Magdalena; Rudawska, Anna. 2020. "Influence of Tea Tree Essential Oil and Poly(ethylene glycol) on Antibacterial and Physicochemical Properties of Polylactide-Based Films" Materials 13, no. 21: 4953. https://doi.org/10.3390/ma13214953

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