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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 2: Modeling and Simulation of Soft Matter I

CPP 2.5: Talk

Monday, March 18, 2024, 10:45–11:00, H 0107

Model-Based Approach to Reinforcement in Filled and Strain-Crystallizing Elastomer Networks — •Lena Tarrach and Reinhard Hentschke — Bergische Universität Wuppertal, Wuppertal, Deutschland

The objective of this work is the investigation of the interplay and the differences between reinforcement by filler and by strain-induced crystallization (SIC) in elastomer networks such as Natural Rubber. For this purpose, the model for SIC proposed by Plagge & Hentschke [1] is combined with the model for filled rubber developed by Viktorova et al. [2]. The model is extended to investigate the rupture behavior. First, the stress-stretch behavior and crystallinity-stretch curves of non-breaking model networks with variable filler content are analyzed and compared to experimental observations. Secondly, the rupture behavior is examined dependent on the filler content.

[1] Plagge, J. & Hentschke, R. Microphase Separation in Strain-Crystallizing Rubber. Macromolecules 54, 5629-5635. https://doi.org/10.1021/acs.macromol.1c00757 (2021).

[2] Viktorova, M. et al. Mesoscopic Model for the Simulation of Dynamic Mechanical Properties of Filled Elastomers: Model Construction and Parameterization. ACS Applied Polymer Materials 2, 5521-5532. https://doi.org/10. 1021/acsapm.0c00868 (2020).

Keywords: strain-induced crystallization; filler; reinforcement; elastomer; modeling