6533b7d2fe1ef96bd125eab7
RESEARCH PRODUCT
Carvacrol affects interfacial, structural and transfer properties of chitosan coatings applied onto polyethylene
Mario ŠčEtarKata GalićAndrée VoilleyMia KurekFrédéric DebeaufortJean-pierre CouvercelleClaire-hélène Brachaissubject
Materials sciencePolymers and PlasticsSurface Propertiesmacromolecular substancesengineering.materialPermeabilityChitosanContact anglechemistry.chemical_compoundAnti-Infective AgentsCoatingMaterials Chemistrybio-based polymer; coating; chitosan; wettability; surface energy; permeabilityComposite materialChitosanOrganic Chemistrytechnology industry and agricultureAdhesionCarbon DioxidePolyethyleneSurface energyOxygencarbohydrates (lipids)chemistryPolyethyleneMonoterpenesWettabilityengineeringCymenesWettingLayer (electronics)description
Different chitosan coating solutions were tested with the aim of investigating their adhesion and wettability onto polyethylene film to improve packaging performance and provide antimicrobial properties. Surface wetting kinetics was monitored by contact angle measurements. Addition of ethanol and carvacrol improved wettability and adhesion of the thin chitosan layer. Structure, water vapour, O2, CO2 and air permeabilities of self supported chitosan films and coated polyethylene were determined. The formation of a thin chitosan layer on polyethylene improved gas barrier properties decreasing the Permeability Coefficient for oxygen and carbon dioxide ( [Formula: see text] , [Formula: see text] ) from 100 to 10,000 times. Presence of carvacrol in the chitosan coating layer increased [Formula: see text] , [Formula: see text] and Pair by a factor of ten. Moreover, it influenced film microstructure. However chitosan was shown to be good gas barrier film in the dry state.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-03-08 |