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Solvent control of crack dynamics in a reversible hydrogel
Open accessAbstract
The resistance to fracture of reversible biopolymer hydrogels is an important control factor of the textural characteristics of food gels1 (such as gummy candies and aspic preparations). It is also critical for their use in tissue engineering, for which mechanical protection of encapsulated components is needed2,3. Its dependence on loading rate4 and, recently, on the density and strength of crosslinks3 has been investigated. But, so far, no attention has been paid to solvent or to environment effects. Here we report a systematic study of crack dynamics in gels of gelatin in water/glycerol mixtures. We show in this model system that increasing solvent viscosity slows down cracks; moreover soaking with solvent markedly increases gel fragility; finally tuning the viscosity by adding a miscible liquid affects crack propagation through diffusive invasion of the crack tip vicinity. The results highlight the fact that fracture occurs by viscoplastic chain pull-out. This mechanism, as well as the related phenomenology, should be common to all reversibly crosslinked (physical) gels.
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Citations
Cites
Independent Control of Rigidity and Toughness of Polymeric Hydrogels
Kong, H. J., Wong, E., & Mooney, D. J. (2003) · Macromolecules · doi:10.1021/ma034137w · Cited by 224
Cited by
Physical hydrogels composed of polyampholytes demonstrate high toughness and viscoelasticity
Sun, T. L., Kurokawa, T., Kuroda, S., Ihsan, A. B., Akasaki, T., Sato, K., Haque, M. A., Nakajima, T., & Gong, J. P. (2013) · Nature Materials · doi:10.1038/nmat3713 · Cited by 2,089
Multi-scale multi-mechanism design of tough hydrogels: building dissipation into stretchy networks
Zhao, X. (2014) · Soft Matter · doi:10.1039/c3sm52272e · Cited by 1,252
Fracture and adhesion of soft materials: a review
Creton, C., & Ciccotti, M. (2016) · Reports on Progress in Physics · doi:10.1088/0034-4885/79/4/046601 · Cited by 915
Bai, R., Yang, J., & Suo, Z. (2019) · European Journal of Mechanics - A/Solids · doi:10.1016/j.euromechsol.2018.12.001 · Cited by 346
Fatigue fracture of tough hydrogels
Bai, R., Yang, Q., Tang, J., Morelle, X. P., Vlassak, J., & Suo, Z. (2017) · Extreme Mechanics Letters · doi:10.1016/j.eml.2017.07.002 · Cited by 312
Metadata
- Authors
- Baumberger, T., Caroli, C., & Martina, D.
- Venue
- Nature Materials
- Published
- 2006-06-04
- Volume
- 5
- Issue
- 7
- Pages
- 552-555
- ISSN
- 1476-1122 (ISSN-L)
- 1476-4660
- OpenAlex
- W1986141874
- Cited by
- 215
- References
- 1
- FWCI
- 2.98
- Type
- journal article
- Language
- en
- Open access
- green
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- Baumberger, T., Caroli, C., & Martina, D. (2006). Solvent control of crack dynamics in a reversible hydrogel. Nature Materials. https://doi.org/10.1038/nmat1666
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
