Application of cold plasma to develop carboxymethyl cellulose-coated polypropylene films containing essential oil. (15th November 2017)

• Record Type: Journal Article
• Authors: Honarvar, Zohreh; Farhoodi, Mehdi; Khani, Mohammad Reza; Mohammadi, Abdorreza; Shokri, Babak; Ferdowsi, Ruhollah; Shojaee-Aliabadi, Saeedeh
• Is Part Of: Carbohydrate polymers. Volume 176(2017)
• Page Start: 1
• Page End: 10
• Publication Date: 2017-11-15
• Subjects: Antimicrobial -- Carboxymethyl cellulose -- Coated-polypropylene film -- Cold plasma -- Zataria multiflora; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2017.08.054
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: Athmospheric cold plasma enhanced attachment of CMC layer to PP film. The plasma-treated bilayer films had improved mechanical and WVP properties. The antimicrobial bilayer films effectively inhibited the pathogens tested. The addition of essential oil reduced WVP of the bilayer films. Abstract: This study was aimed to develop and characterize carboxymethyl cellulose-coated polypropylene (PP/CMC) films with Zataria multiflora essential oil (ZEO) as a new antimicrobial food packaging. For better attachment of CMC on polypropylene (PP) film surface, atmospheric plasma pretreatment was used. Results showed the formation of polar groups such as CO and OH in the PP surface following the plasma treatment. Plasma-treated PP had rougher surfaces and their contact angle reduced from 88.92° to 52.15° indicating increased surface hydrophilicity. Plasma-treated PP/CMC films showed lower water vapor permeability (WVP) and higher tensile strength compared to untreated bilayer films. Results revealed that antimicrobial PP/CMC films with higher content of ZEO had lower WVP, but was more sensitive to breakage. Antimicrobial characteristics in the direct contact and vapor phase represented great inhibition for all the tested bacteria. Our findings suggest that plasma-treated PP/CMC films have the potential for application in food antimicrobial packaging.