Room: Yangtze 1
Date: Tuesday, 19 May 2026
Time: 17:30 - 18:30 CEST
Session code 6AO.9
Biomaterials with specific properties
BIOTMEG - Biomass Refinement through Intentional ThermoMechanical Degradation during Extrusion Grinding
Short Introductive summary
The presented work highlights the potential of thermomechanical treatment, involving controlled degradation of plant-based materials (PBMs), to broaden their application range in the development of wood-polymer composites and to merge related benefits into a single innovative process – BIOTMEG™ – Biomass Refinement through Intentional ThermoMechanical Degradation during Extrusion Grinding. As examples of waste-based PBMs, apple pomace (BAP) from apple juice production and brewers’ spent grain (BSG) from beer manufacturing have been used. Both BAP and BSG have been subjected to thermomechanical treatment in a co-rotating twin screw extruder at varying temperatures. The extrusion parameters and volatile organic compounds emissions have been assessed. Prior to incorporation into the polypropylene (PP) matrix, treated biomass has been comprehensively characterized for changes in appearance, chemical structure and composition, polarity, thermal stability, and antioxidant activity. The impact of thermomechanically induced variations in biomass on melt-processing characteristics and the structure and performance of PP-based WPCs has been comprehensively assessed.
Presenter
Aleksander HEJNA
Poznan University of Technology, Institute of Material Technology, POLAND
Presenter's biography
Aleksander Hejna, PhD in Chemical Technology, Assistant Professor at Poznan University of Technology, research interests combine the aspects of waste management and sustainability with the development of novel, polymer-based materials
Biographies and Short introductive summaries are supplied directly by presenters and are published here unedited
Co-authors:
M. Barczewski, Poznan University of Technology, POLAND
A. Bartnicki, Lukasiewicz Research Network - Institute for Engineering of Polymer Materials and Dyes, Torun, POLAND
J. Anisko-Michalak, Poznan University of Technology, POLAND
J. Andrzejewski, Poznan University of Technology, POLAND
R. Malinowski, Lukasiewicz Research Network - Institute for Engineering of Polymer Materials and Dyes, Torun, POLAND
Z. Ortega, Universidad de Las Palmas de Gran Canaria, Las Palmas, SPAIN
J. Szulc, Bydgoszcz University of Science and Technology, POLAND
S. Paszkiewicz, West Pomeranian University of Technology, Szczecin, POLAND
I. Irska, West Pomeranian University of Technology, Szczecin, POLAND
Session reference: 6AO.9.3