Issue 38, 2024

How do stretch rate, temperature, and solvent exchange affect elastic network rupture?

Abstract

In this study, we investigate three different polymeric networks in terms of their tensile strength as a function of stretching rate, or temperature, or medium viscosity. Both an acrylate-based elastomer and a crosslinked poly(methyl acrylate) are stronger, more stretchable, and tougher at high rates. They are also much stronger at lower temperatures. Such phenomena systematically suggest that the kinetics of bond dissociation in backbones of those load-bearing strands dictate the rate and temperature dependencies. We apply Eyring's activation idea for chain scission to rationalize the influence of rate and temperature on rupture for both elastomers and hydrogels where hydrogels become much more stretchable and stronger when water is replaced by glycerol.

Graphical abstract: How do stretch rate, temperature, and solvent exchange affect elastic network rupture?

Supplementary files

Article information

Article type
Paper
Submitted
30 Jun 2024
Accepted
07 Sep 2024
First published
18 Sep 2024
This article is Open Access
Creative Commons BY-NC license

Soft Matter, 2024,20, 7657-7667

How do stretch rate, temperature, and solvent exchange affect elastic network rupture?

A. Y. Siavoshani, Z. Fan, M. Yang, S. Liu, M. Wang, J. Liu, W. Xu, J. Wang, S. Lin and S. Wang, Soft Matter, 2024, 20, 7657 DOI: 10.1039/D4SM00794H

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