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Toughness of Double Network Hydrogels: The Role of Reduced Stress Propagation [dataset] Open Access
Double network hydrogels show remarkable mechanical performance, combining high strength and fracture toughness with sufficient stiffness to bear load, despite containing only a low density of cross-linked polymer molecules in water. We introduce a simple mesoscale model of a double network material, detailed enough to resolve the salient microphysics of local plastic bond breakage, yet simple enough to address macroscopic cracking. Load sharing between the networks results in a delocalization of stress such that the double network inherits both the stiffness of its stiff-and-brittle sacrificial network and the ductility of its soft-and-ductile matrix network. The underlying mechanism is a reduction in the Eshelby stress propagator between sacrificial bonds, inhibiting the tendency for the plastic failure of one sacrificial bond to propagate stress to neighboring sacrificial bonds and cause a follow-on cascade of breakages. The mechanism of brittle macroscopic cracking is thereby suppressed, giving instead ductile deformation via diffusely distributed microcracking.
Descriptions
- Resource type
- Dataset
- Contributors
- Creator:
Walker, Samuel
1
Data collector: Walker, Samuel 1
Contact person: Fielding, Suzanne M. 1
1 Durham University
- Funder
-
European Research Council
- Research methods
- Other description
- Keyword
- Statistical mechanics
Materials science
Soft condensed matter
Double Networks
- Subject
-
Statistical mechanics
Materials science
Soft condensed matter
- Location
- Language
- Cited in
- Identifier
- ark:/32150/r28p58pd01g
doi:10.15128/r28p58pd01g
- Rights
- Creative Commons Attribution 4.0 International (CC BY)
- Publisher
-
Durham University
- Date Created
File Details
- Depositor
- S.B. Walker
- Date Uploaded
- 27 November 2025, 13:11:13
- Date Modified
- 28 November 2025, 08:11:06
- Audit Status
- Audits have not yet been run on this file.
- Characterization
-
File format: zip (ZIP Format)
Mime type: application/zip
File size: 3959847
Last modified: 2025:11:27 13:11:20+00:00
Filename: Double Network Data.zip
Original checksum: e0d59221098d7035ab36d00db8dc991e
| User Activity | Date |
|---|---|
| User S.B. Walker has updated Toughness of Double Network Hydrogels: The Role of Reduced Stress Propagation [dataset].zip | 3 days ago |
| User S.B. Walker has deposited Double Network Data.zip | 3 days ago |