Chitosan-based films enriched by caffeic acid with poly(ethylene glycol) – A physicochemical and antibacterial properties evaluation

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.

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Characterization and antibacterial properties of genipin-crosslinked chitosan/poly(ethylene glycol)/ZnO/Ag nanocomposites

Carbohydrate Polymers ◽

10.1016/j.carbpol.2012.02.058 ◽

2012 ◽

Vol 89 (1) ◽

pp. 111-116 ◽

Cited By ~ 118

Author(s):

Yangshuo Liu ◽

Hyung-Il Kim

Keyword(s):

Ethylene Glycol ◽

Antibacterial Properties ◽

Poly Ethylene Glycol ◽

Crosslinked Chitosan ◽

Poly Ethylene

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Laccase-catalyzed poly(ethylene glycol)-templated ‘zip’ polymerization of caffeic acid for functionalization of wool fabrics

Journal of Cleaner Production ◽

10.1016/j.jclepro.2018.04.213 ◽

2018 ◽

Vol 191 ◽

pp. 48-56 ◽

Cited By ~ 9

Author(s):

Rubing Bai ◽

Yuanyuan Yu ◽

Qiang Wang ◽

Xuerong Fan ◽

Ping Wang ◽

...

Keyword(s):

Ethylene Glycol ◽

Caffeic Acid ◽

Poly Ethylene Glycol ◽

Wool Fabrics ◽

Poly Ethylene

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Effect of Poly Ethylene Glycol on CuO Nanoparticles and its Antibacterial Application

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.63.111 ◽

2016 ◽

Vol 63 ◽

pp. 111-118 ◽

Cited By ~ 1

Author(s):

T. Hemalatha ◽

S. Akilandeswari

Keyword(s):

Ethylene Glycol ◽

Quantum Confinement Effect ◽

Antibacterial Properties ◽

Cuo Nanoparticles ◽

Diffusion Method ◽

X Ray Diffraction ◽

Poly Ethylene Glycol ◽

X Ray ◽

Ft Ir ◽

Poly Ethylene

Pure CuO nanoparticles and chemically-precipitated Poly Ethylene Glycol (PEG) used as a capping agent CuO nanocrystal continuum (0.1, 0.2, 0.3, 0.4, 0.5 gm) was anatomized for structural and morphological research using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and Field - Emission Scanning Electron Microscopy (FE-SEM). Their X-ray Diffraction (XRD) analysis manifested monoclinic crystallinity in pure and PEG-capped CuO nanorods, with an average crystallite size of 21.63nm and 13-16nm respectively. The morphological analysis revealed their structural conformation. The FT-IR spectrum affirmed the presence of Cu-O bonds. The optical property of the aforesaid nanorods was studied by UV-Visible reflectance (UV-Vis DRS). The UV analysis showed that all the capped products show signs of good optical quality in the UV region and also the absorption edge was blue shifted with a band gap of 1.85 eV for 0.4gm PEG capped as results of quantum confinement effect. The antibacterial properties of the as-prepared nanostructures investigated for various human pathogens using disc diffusion method. The result showed the significant antibacterial activity bothgram positiveandgram negativebacteria.

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