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Polymer nanocomposites exhibit complex rheological behaviour due to physical and also possibly chemical interactions between individual phases. up to now, rheology of polymer nanocomposites has been usually described by evaluation of viscosity curve (shear thinning phenomenon), storage modulus curve (formation of secondary plateau) or plotting information about damping behaviour (e.g. van Gurp-Palmen-plot, cole-cole plot). on the contrary to evaluation of damping behaviour, new approach – based on evaluation of rigidity behaviour – was tested, where the values of cot δ were calculated and called as „storage factor“, analogically to loss factor. Afterwards, values of storage factor were integrated over specific frequency range and called as “cumulative storage factor”. in this contribution, LDPe-zno-clay nanocomposites with different polyethylene matrices and dispersion grades (physical networks) have been prepared and characterized by both conventional as well as novel analysis approach. next to cumulative storage factor, further cumulative rheological parameters like cumulative complex viscosity, cumulative complex modulus or cumulative storage modulus have been introduced. keywords: shear flow, oscillatory shear, polymer, clay, nanocomposites kulcsszavak: nyírási folyás, változó amplitúdójú nyírás, polimer, agyag, nanokompozitok Prof. Dr. Milan kracalik is assistant professor at the institute of Polymer science, johannes kepler university Linz. His field of expertise covers in particular polymer rheology, polymer composites and nanocomposites, polymer recycling, study of structure-properties relationship in polymer materials and management associated with technological processes and products. He studied technology & management at the Brno university of technology, czech republic (msc.: 2000), at tomas Bata university in zlin and institute of macromolecular chemistry, Academy of sciences of the czech republic (Ph.D.: 2006) associated with praxis in marketing department of Podravka-Lagris inc., czech republic. Between 2006 and 2012 he was post-doc researcher & project leader at the Department of Polymer engineering and science of the university of Leoben, Austria. Between 2012 and 2014 he was research manager at the Department research and Development of the isovoLtAic AG, Austria. He has also lectured on technology & management at several european universities such as Albert Ludwigs university Freiburg, Budapest university of technology and economics, chemical research centre / Hungarian Academy of sciences, university of zagreb and Department of technical sciences / croatian Academy of sciences and Art.

New approach for investigation of reinforcement in polymer nanocomposites using oscillatory shear flow data