Effect of relative humidity on carvacrol release and permeation properties of chitosan based films and coating
Article dans une revue avec comité de lecture
Date
2014Journal
Food ChemistryAbstract
The influence of water vapour conditions on mass transport and barrier properties of chitosan based films and coatings were studied in relation to surface and structural properties. Water contact angles, material swelling, polymer degradation temperature, barrier properties (PO2, PCO2, WVP) and aroma diffusion coefficients were determined. The solvent nature and the presence of carvacrol influenced the surface and structural properties and then the barrier performance of activated chitosan films. Increasing RH from 0% to 100% led to a significant increase in material swelling. The plasticization effect of water was more pronounced at high humid environment, while at low RH the matrix plasticization was induced by carvacrol. The deposit of a thin chitosan layer on polyethylene decreased PO2 and PCO2 both in dry and humid conditions. The carvacrol release from the chitosan matrix was strongly influenced by RH. A temperature increase from 4 to 37 C also had an impact on carvacrol diffusivity but to a lesser extent than RH.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureBEUGUEL, Quentin; GUINAULT, Alain; LÉGER, Liliane; RESTAGNO, Frédéric; SOLLOGOUB, Cyrille; MIQUELARD-GARNIER, Guillaume (Washington, D.C : American Chemical Society, 2019)Measuring the viscoelastic behavior of polymers in the vicinity of a surface or under confinement is an experimental challenge. Simple rheological tests of nanolayered films of polyethylene/polyamide 6 compatibilized in ...
-
Article dans une revue avec comité de lectureESPINO-PÉREZ, Etzael; BRAS, Julien; DUCRUET, Violette J.; GUINAULT, Alain; DUFRESNE, Alain; DOMENEK, Sandra (Elsevier, 2013)In the aim of producing fully organic bionanocomposite based on poly(lactide) (PLA), cellulose nanowhiskers (CNW) were grafted by n-octadecyl-isocyanate (CNW-ICN) applying an in situ surface grafting method. The compatibilizing ...
-
Article dans une revue avec comité de lectureRIQUET, Anne-Marie; DELATTRE, Jennifer; VITRAC, Olivier; GUINAULT, Alain (Elsevier, 2013)Surface modification of polypropylene (PP) sheets was carried out by radiation induced graft polymer- ization of hydrophilic functional molecules such as N,N-dimethylacrylamide (DMA) and [2-methacry- loyloxy)ethyl] ...
-
Article dans une revue avec comité de lectureSOLLOGOUB, Cyrille; GUINAULT, Alain (Springer Link, 2009)The control of blend morphologies during process is of prime importance in order to predict the final properties of polymer blends. A coextrusion technique combined with static mixers was developed in order to smartly blend ...
-
Article dans une revue avec comité de lectureRUELLAN, Alexandre; GUINAULT, Alain; SOLLOGOUB, Cyrille; CHOLLET, Guillaume; AIT-MADA, Aziza; DUCRUET, Violette; DOMENEK, Sandra (BME-PT Hungary, 2015)The use of industrial by-products of the vegetable oil industry as ductility increasing additives of polylactide (PLA) was investigated. Vegetable oil deodorization condensates were melt-blended by twin-screw extrusion up ...