How High Pressure Influences the Surface of Polymeric Packaging Monolayer (original) (raw)

Abstract

The effects of high pressure treatment of packed food both on their properties like visual integrity, gas and water vapor barrier and seal strength and on other properties are well investigated as the reviews from Fleckenstein et al. [1] and Juliano et al. [2] show. In contrast there are no publications about the influence of high pressure treatment on the surface of polymeric films. Hence in this study the influence of High Pressure Processing (600 MPa) on the surface of several monolayer (PE-HD, PE-LD, PP-BO, PA6-BO, PET-BO) and one multilayer (PS/PE) was determined by Atomic Force Microscopy (AFM), interfacial tension measurement and profile method. At this the arithmetic roughness average obtained by AFM and profile method and the surface energy respectively adhesion obtained by AFM and interfacial tension measurement were used as key figures. Results indicate an influence of high pressure processing on the surface roughness of unfixed biaxial oriented polymer films but shows no...

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