The aim of this project is to gain a fundamental understanding of the interdependence of transport mechanisms and the pore network of paper. Therefore, representative gases and organic compounds capable of gaseous transport are selected and measured to determine the pore network of paper and its transport-relevant properties. The used analytical techniques include migration cells and gas chromatographic based methods.
Poly- and perfluorinated alkyl substances (PFASs) have been intensively investigated in recent years because of their occurrence and importance in food packaging materials. PFASs are thermodynamically stable and highly resistant towards many forms of degradation. Their stability and water/lipid repellent properties makes them attractive for various applications, including in food contact materials (FCMs) of paper and board. However, these substances are also very persistent, bioaccumulative and toxic, and recently some PFASs have begun being regulated or phased out.