Inorganic Salts Induce Thermally Reversible and Anti‐Freezing Cellulose Hydrogels
Abstract
Inspired by the anti‐freezing mechanisms found in nature, ionic compounds (ZnCl 2 /CaCl 2 ) are integrated into cellulose hydrogel networks to enhance the freezing resistance. In this work, cotton cellulose is dissolved by a specially designed ZnCl 2 /CaCl 2 system, which endows the cellulose hydrogels specific properties such as excellent freeze‐tolerance, good ion conductivity, and superior thermal reversibility. Interestingly, the rate of cellulose coagulation could be promoted by the addition of extra water or glycerol. This new type of cellulose‐based hydrogel may be suitable for the construction of flexible devices used at temperature as low as −70 °C.
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Addition of hygroscopic salts such as sodium chloride and CaCl2 enhances the freezing resistance and water storage capacity of hydrogels.
“Another common method to enhance the freezing resistance and water storage capacity of hydrogels is the addition of hygroscopic salts, such as sodium chloride and CaCl2”
From Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors. (2023) · cites this paper as [155]
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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
- Authors
- Zhang, X., Ma, X., Hou, T., Guo, K., Yin, J., Wang, Z., Shu, L., He, M., & Yao, J.
- Affiliations
- Nanjing Forestry University (CN)
- Corresponding author
- He, Ming
- Yao, Jianfeng
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2019-04-18
- Volume
- 58
- Issue
- 22
- Pages
- 7366-7370
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2931006481
- Cited by
- 530
- References
- 0
- Citations by year
- 2026: 47 · 2025: 83 · 2024: 100 · 2023: 99 · 2022: 74 · 2021: 67 · 2020: 43 · 2019: 17
- FWCI
- 14.25
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Angewandte Chemie International Edition (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Basic Research Program of Jiangsu Province (BK20180766)
- Topics
- Physical Sciences › Materials Science › Biomaterials › Advanced Cellulose Research Studies
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
- Life Sciences › Agricultural and Biological Sciences › Food Science › Polysaccharides Composition and Applications
- Keywords
- cellulose hydrogels, anti-freezing, freezing tolerance, thermal reversibility, inorganic salts, zinc chloride, calcium chloride, cotton cellulose, ionic liquid dissolution, ionic conductivity, glycerol, flexible devices
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