Application of cold plasma to develop carboxymethyl cellulose-coated polypropylene films containing essential oil

作者：Honarvar Zohreh; Farhoodi Mehdi; Khani Mohammad Reza; Mohammadi Abdorreza; Shokri Babak; Ferdowsi Ruhollah; Shojaee Aliabadi Saeedeh^*

来源：Carbohydrate Polymers, 2017, 176: 1-10.

DOI：10.1016/j.carbpol.2017.08.054

• Antimicrobial
• Carboxymethyl cellulose
• Coated-polypropylene film
• Cold plasma
• Zataria multiflora

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 C=O and OH in the PP surface following the plasma treatment. Plasma-treated PP had rougher surfaces and their contact angle reduced from 88.92 degrees to 52.15 degrees 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.

• 出版日期2017-11-15