ArticleChemical science2021
Mechanochemistry unveils stress transfer during sacrificial bond fracture of tough multiple network elastomers.
Article in Chemical science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 55 citations in OpenAlex.
- Mechanochemical Activation of a Bridged-Exciplex Optical Force Probe.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Polyolefin blends with co-continuous architectures enabled by dynamic covalent crosslinking.Science advances · 2026Article
- From molecular damage and viscoelasticity to interfacial fracture in soft polymer networks: Insights from mechanochemistry.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Mechanochemistry: Fundamental Principles and Applications.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Review
- Autonomic Self-Healing of Polymers: Mechanisms, Applications, and Challenges.Molecules (Basel, Switzerland) · 2025Review
- Role of molecular damage in crack initiation mechanisms of tough elastomers.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Programming Mechanical Properties through Encoded Network Topologies.Journal of polymer science (2020) · 2024Article
- Facile Mechanophore Integration in Heterogeneous Biologically Derived Materials via "Dip-Conjugation".Journal of the American Chemical Society · 2024Article
- Polymer time crystal: Mechanical activation of reversible bonds by low-amplitude high frequency excitations.Science advances · 2024Article
- Fluorescence-readout as a powerful macromolecular characterisation tool.Chemical science · 2023Review
- Tailoring Triple Filler Systems for Improved Magneto-Mechanical Performance in Silicone Rubber Composites.Polymers · 2023Article
- A molecular interpretation of the toughness of multiple network elastomers at high temperature.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Bridging pico-to-nanonewtons with a ratiometric force probe for monitoring nanoscale polymer physics before damage.Nature communications · 2022Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The molecular level transfer of stress from a stiff percolating filler to a stretchable matrix is a crucial and generic mechanism of toughening in soft materials. Yet the molecular details of how this transfer occurs have so far been experimentally unreachable. Model multiple network elastomers containing spiropyran (SP) force sensors incorporated into the stiff filler network or into the stretchable matrix network are used here to detect and investigate the mechanism of stress transfer between distinct populations of polymer strands. We find that as the filler network progressively breaks by random bond scission, there is a critical stress where cooperative bond scission occurs and the macroscopic stretch increases discontinuously by necking. Surprisingly, SP molecules reveal that even in the necked region both filler and matrix chains share the load, with roughly 90% of the SPs force-activated in the filler chains before necking still being loaded in the necked region where significant activation of the SP incorporated into the matrix chains occurs. This result, where both networks remain loaded upon necking, is qualitatively consistent with the model proposed by Brown, where holes or microcracks are formed in the stiff regions and are bridged by stretched matrix chains. Detection of merocyanine (
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