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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 58: Polymer Networks and Elastomers
CPP 58.2: Talk
Friday, March 31, 2023, 10:00–10:15, ZEU 255
Effect of π-π stacking interactions on mechanical properties of lignin-based thermosetting resins — •Iuliana Ribca1, Benedikt Sochor2, Marie Betker1, 2, Stephan V. Roth1, 2, Martin Lawoko1, Michael A. R. Meier3, 4, and Mats Johansson1 — 1Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm, Sweden — 2Deutsches-Elektronen Synchrotron (DESY), Hamburg, Germany — 3Institute of Organic Chemistry (IOC), Materialwissenschaftliches Zentrum MZE, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany — 4Institute of Biological and Chemical Systems-Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany
The transition towards a more sustainable global carbon economy can be achieved by replacing petroleum-based materials with bio-based alternatives. Lignin is the most abundant aromatic resource in nature and a largely unused by-product of the pulp and paper industry. It is considered a good replacement for fossil-based aromatics. One promising strategy for lignin valorization is to produce thermosetting resins. Further applications of these resins require the understanding of their physicochemical properties. An important role on these properties are playing π-π stacking interactions. Different configurations of π-π stacking interactions are favored between the lignin chains, due to the presence of aromatic rings. In this study, it was investigated the effect of π-π stacking interactions on mechanical properties of lignin-based thermosets by small and wide-angle X-ray scattering methods.