Antibacterial Performance of Alginic Acid Coating on Polyethylene Film

International Journal of Molecular Sciences

Elika Karbassi³  Ahmad Asadinezhad³  Marian Lehocký⁴  Petr Humpolíპk⁴  Alenka Vesel¹  Igor Novák² 

[1] Department of Surface Engineering, Jožef Stefan Institute, Ljubljana 1000, Slovenia; E-Mail:;Polymer Institute, Slovak Academy of Sciences, Bratislava 84236, Slovakia; E-Mail:;Department of Chemical Engineering, Isfahan University of Technology, Esfahan 84156-83111, Iran; E-Mails:;Centre of Polymer Systems, Tomas Bata University in Zlín, Zlín 76001, Czech Republic; E-Mails:

关键词: alginic acid;    polyethylene;    surface modification;    antibacterial activity;    polysaccharide;   

DOI  :  10.3390/ijms150814684

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.