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Revista de Chimie (Rev. Chim.), Year 2013, Volume 64, Issue 6,





Ana Maria Grigoriu, Constantin Luca, Eugen Horoba, Simona Dunca
Antimicrobial Polymer Films Functionalized with Cyclodextrins

Abstract:

The present paper suggests the applying of some support activation methods (dry rubbing, cold plasma or alkaline treatment) for the improvement of the subsequent chemical treatment effects for the polyethylene terephthalate (PET) and polypropylene (PP) films for food package materials. Polyvinyl alcohol (PVA) coating grafted with monochlorotriazinyl-b-cyclodextrin (MCT) provide hosting cavities that can include a large variety of chemicals for specific antimicrobial coating. Some substances (ferulic acid, allantoin) have been included in the cavities of MCT grafted on coated layer. The inclusion compounds have been characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier Transform Infrared Attenuated Total Reflexion (FT-IR ATR) and Ultraviolet (UV) techniques. The antimicrobial properties of the samples were confirmed by microbiological tests. The antimicrobial activity against four different strains of microorganisms, Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and Candida albicans, was evaluated by measuring the growing inhibition zone. Our results have shown the included components are efficiently hosted in the cyclodextrin (CD) nanocavities and the antimicrobial properties of the films are significant after the proposed chemical treatment. Keywords: chemical treatment, cold plasma treatment, polymeric films, monochlorotriazinyl-b-cyclodextrin


Issue: 2013, Volume 64, Issue 6
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