Cellulose Acetate Membranes Modification by Aminosilane Grafting in Supercritical Carbon Dioxide towards Antibiofilm Properties.

Autor: Tyrka M; Department of Bioprocess, Micro and Nano Engineering, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland., Nowak M; Department of Bioprocess, Micro and Nano Engineering, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland., Misic D; Department of Functional Foods Development, Wroclaw University of Environmental and Life Sciences, Chelmonskiego Street 37, 51-630 Wroclaw, Poland., Półbrat T; Department of Functional Foods Development, Wroclaw University of Environmental and Life Sciences, Chelmonskiego Street 37, 51-630 Wroclaw, Poland., Koter S; Department of Physical Chemistry and Physicochemistry of Polymers, Nicolaus Copernicus University in Torun, Gagarina 11 Street, 87-100 Torun, Poland., Trusek A; Department of Bioprocess, Micro and Nano Engineering, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland., Zizovic I; Department of Bioprocess, Micro and Nano Engineering, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
Jazyk: angličtina
Zdroj: Membranes [Membranes (Basel)] 2021 Dec 27; Vol. 12 (1). Date of Electronic Publication: 2021 Dec 27.
DOI: 10.3390/membranes12010033
Abstrakt: The study explores the grafting of cellulose acetate microfiltration membranes with an aminosilane to attain antibiofilm properties. The grafting reaction was performed in the supercritical carbon dioxide used as a transport and reaction medium. The FTIR analyses and dissolution tests confirmed the covalent bonding between the aminosilane and polymer. The membranes' microstructure was investigated using a dual-beam SEM and ion microscopy, and no adverse effects of the processing were found. The modified membranes showed a more hydrophilic nature and larger water permeate flow rate than the neat cellulose acetate membranes. The tests in a cross-filtration unit showed that modified membranes were considerably less blocked after a week of exposure to Staphylococcus aureus and Escherichia coli than the original ones. Microbiological investigations revealed strong antibiofilm properties of the grafted membranes in experiments with Staphylococcus aureus , Listeria monocytogenes , Escherichia coli , and Salmonella Enteritidis.
Databáze: MEDLINE
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