Forschung Projektdatenbank Preservation of Food Quality Sorptionsisotherms of Plastic Films

Sorptionsisotherms of Plastic Films

Measurement of Vapour Sorption Isotherms of Active Packaging Films by Means of DVS

Workgroup: Preservation of Food Quality

Spokesman of IVLV-Project Team: N.N.
Research Institution: Fraunhofer IVV, Freising
Scientific Guidance: Dr. Dr. G. Ziegleder

Financing: IVLV
Project Duration: 2004

The efficiency of active packaging films is strongly dependent on the vapour sorption behaviour of the plastic material and of the active substance (scavenger). In oxygen scavenging films the diffusion and solubility of oxygen is influenced by the moisture; in addition, the scavenger material is triggered or activated by moisture. Therefore, the sorption behaviour of plastic material is of great importance for active films. In contrary to food, there is no collection of vapour sorption isotherms for plastic films.By means of dynamic vapour sorption DVS the sorption isotherms of plastic films, coats of lacquers, compounds and active materials shall be measured. Where possible, the data shall be compared with the efficiency of active packaging films. Aim is to receive more information of the working mechanisms of active packaging films.