Poly(vinyl alcohol) Hydrogel Can Autonomously Self-Heal
Abstract
It is discovered that poly(vinyl alcohol) (PVA) hydrogel prepared using the freezing/thawing method can self-repair at room temperature without the need for any stimulus or healing agent. The autonomous self-healing process can be fast for mechanically strong PVA hydrogel yielding a high fracture stress. Investigation on the effect of the hydrogel preparation conditions points out that hydrogen bonding between PVA chains across the interface of the cut surfaces is at the origin of the phenomenon. The key for an effective self-healing is to have an appropriate balance between high concentration of free hydroxyl groups on PVA chains on the cut surfaces prior to contact and sufficient PVA chain mobility in the hydrogel.
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Self-healing process of PVA hydrogels can occur without additional stimuli or healing agents.
“This self-healing process can occur without additional stimuli or healing agents”
From Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors. (2023) · cites this paper as [178]
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Cai, G., Wang, J., Qian, K., Chen, J., Li, S., & Lee, P. S. (2017) · Advanced Science · doi:10.1002/advs.201600190 · Cited by 921 · see citing works
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Michal, B. T., Jaye, C. A., Spencer, E. J., & Rowan, S. J. (2013) · ACS Macro Letters · doi:10.1021/mz400318m · Cited by 420 · see citing works
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Fan, H., & Gong, J. P. (2020) · Macromolecules · doi:10.1021/acs.macromol.0c00238 · Cited by 292 · see citing works
Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors.
Luo, Y., Li, J., Ding, Q., Wang, H., Liu, C., & Wu, J. (2023) · Nano-Micro Letters · doi:10.1007/s40820-023-01109-2 · Cited by 236 · see citing works
“Zhang et al. [178] used the freezing/thawing method to prepare a PVA hydrogels with self-healing ability against mechanical damage at room-temperature.”
MethodSupramolecular Hydrogel of Chitosan in the Presence of Graphene Oxide Nanosheets as 2D Cross-Linkers
Han, D., & Yan, L. (2014) · ACS Sustainable Chemistry & Engineering · doi:10.1021/sc400352a · Cited by 130 · see citing works
- Authors
- Zhang, H., Xia, H., & Zhao, Y.
- Affiliations
- Université de Sherbrooke (CA)
- Sichuan University (CN)
- Corresponding author
- Xia, Hesheng
- Zhao, Yue
- Venue
- ACS Macro Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-10-09
- Volume
- 1
- Issue
- 11
- Pages
- 1233-1236
- ISSN
- 2161-1653 (ISSN-L)
- OpenAlex
- W2034705521
- Cited by
- 509
- References
- 0
- Citations by year
- 2026: 22 · 2025: 35 · 2024: 34 · 2023: 58 · 2022: 44 · 2021: 52 · 2020: 57 · 2019: 60 · 2018: 35 · 2017: 45 · 2016: 17 · 2015: 20 · 2014: 17 · 2013: 12
- FWCI
- 7.19
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- ACS Macro Letters (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
- Physical Sciences › Materials Science › Biomaterials › Supramolecular Self-Assembly in Materials
- Keywords
- polyvinyl alcohol hydrogel, autonomous self-healing, hydrogen bonding, fracture stress, hydrogel mechanical strength, chain mobility, hydroxyl groups, self-healing polymers
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