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Int. J. Mol. Sci. 2014, 15(8), 14684-14696;

Antibacterial Performance of Alginic Acid Coating on Polyethylene Film

Department of Chemical Engineering, Isfahan University of Technology, Esfahan 84156-83111, Iran
Centre of Polymer Systems, Tomas Bata University in Zlín, Zlín 76001, Czech Republic
Department of Surface Engineering, Jožef Stefan Institute, Ljubljana 1000, Slovenia
Polymer Institute, Slovak Academy of Sciences, Bratislava 84236, Slovakia
Author to whom correspondence should be addressed.
Received: 9 June 2014 / Revised: 11 July 2014 / Accepted: 29 July 2014 / Published: 21 August 2014
(This article belongs to the Special Issue Antimicrobial Polymers)
PDF [1416 KB, uploaded 21 August 2014]


Alginic acid coated polyethylene films were examined in terms of surface properties and bacteriostatic performance against two most representative bacterial strains, that is, Escherichia coli and Staphylococcus aureus. Microwave plasma treatment followed by brush formation in vapor state from three distinguished precursors (allylalcohol, allylamine, hydroxyethyl methacrylate) was carried out to deposit alginic acid on the substrate. Surface analyses via various techniques established that alginic acid was immobilized onto the surface where grafting (brush) chemistry influenced the amount of alginic acid coated. Moreover, alginic acid was found to be capable of bacterial growth inhibition which itself was significantly affected by the brush type. The polyanionic character of alginic acid as a carbohydrate polymer was assumed to play the pivotal role in antibacterial activity. The cell wall composition of two bacterial strains along with the substrates physicochemical properties accounted for different levels of bacteriostatic performance. View Full-Text
Keywords: alginic acid; polyethylene; surface modification; antibacterial activity; polysaccharide alginic acid; polyethylene; surface modification; antibacterial activity; polysaccharide

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Karbassi, E.; Asadinezhad, A.; Lehocký, M.; Humpolíček, P.; Vesel, A.; Novák, I.; Sáha, P. Antibacterial Performance of Alginic Acid Coating on Polyethylene Film. Int. J. Mol. Sci. 2014, 15, 14684-14696.

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