Modification of water vapour transfer rate of low density polyethylene films for food packaging

Development of a mathematical model for simulating gas and water vapor exchanges in modified atmosphere packaging with macroscopic perforations

“…Gas and water vapor exchanges through polymeric films follow Fick's first law of diffusion (Dirim et al, 2004;Emond et al, 1991;Talasila & Cameron, 1997). Thus, the change in the volume of gas i inside a package is expressed as…”

“…MAP with either microscopic or macroscopic perforations in the packaging film was introduced to provide additional benefits, such as a decrease in the risk of anaerobic conditions, including excessive CO 2 , and reduced package condensation, particularly with temperature fluctuation, whilst maintaining a high CO 2 level with a low O 2 level for some products (Emond, Castaigne, Toupin, & Desilets, 1991;Fonseca, Oliveira, Lino, Brecht, & Chau, 2000;Hirata, Makino, Ishikawa, Katsuura, & Hasegawa, 1996;Lee & Renault, 1998;Paul & Clarke, 2002;Renault, Souty, & Chambroy, 1994;Silva, Chau, Brecht, & Sargent, 1999). Water vapor transfer rate can be increased using a perforated film, which may result in commodity spoilage reduction (Dirim, Ozden, Bayindirli, & Esin, 2004).…”

Characterization of antioxidant low density polyethylene/polyaniline blends prepared via extrusion

“…The oxygen barrier and mechanical properties of PE were improved upon blending with starch [10], or by incorporating polyethylene terephthalate microfibrils in the PE matrix [11]. The inclusion of zeolites in the PE matrix improved its water vapour transfer rate [12]. Furthermore, PE has been coated with garlic oil, rosemary oil [13] and zinc oxide nanoparticles [14] to yield packaging films with antimicrobial properties.…”

Prediction of Release Characteristics of Film‐Coated Urea from Structure Characterization Data of the Film

“…(9)- (11). The pore size distribution of the film coated on the urea particle was measured by a mercury porosimeter.…”

“…Shaviv et al [10] analyzed the release process of film-coated urea and suggested that the film permeability coefficients of water vapor and urea are the key parameters determining the release rates. Dirim et al [11] prepared polyethylene films with dense and simulated holes, measured the permeability coefficients of the film, and showed that the pore structures determined the diffusion flux and permeability coefficients. Dirim et al [11] prepared polyethylene films with dense and simulated holes, measured the permeability coefficients of the film, and showed that the pore structures determined the diffusion flux and permeability coefficients.…”