Transparent hydrogel with enhanced water retention capacity by introducing highly hydratable salt
Open accessAbstract
Polyacrylamide hydrogels containing salt as electrolyte have been used as highly stretchable transparent electrodes in flexible electronics, but those hydrogels are easy to dry out due to water evaporation. Targeted, we try to enhance water retention capacity of polyacrylamide hydrogel by introducing highly hydratable salts into the hydrogel. These hydrogels show enhanced water retention capacity in different level. Specially, polyacrylamide hydrogel containing high content of lithium chloride can retain over 70% of its initial water even in environment with relative humidity of only 10% RH. The excellent water retention capacities of these hydrogels will make more applications of hydrogels become possible.
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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 [158]
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References 27 · Cited by 383
- Authors
- Bai, Y., Chen, B., Xiang, F., Zhou, J., Wang, H., & Suo, Z.
- Affiliations
- Xi'an Jiaotong University (CN)
- State Key Laboratory of Mechanical Structure Strength and Vibration (CN)
- Harvard University (US)
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2014-10-13
- Volume
- 105
- Issue
- 15
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2079538399
- Cited by
- 383
- References
- 27
- Citations by year
- 2026: 16 · 2025: 32 · 2024: 50 · 2023: 58 · 2022: 43 · 2021: 52 · 2020: 44 · 2019: 35 · 2018: 23 · 2017: 15 · 2016: 11 · 2015: 4
- FWCI
- 5.31
- Type
- journal article
- Language
- en
- Open access
- green
- nrs.harvard.edu
- Licence
- cc-by
- Locations
- Applied Physics Letters (publishedVersion)
- Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
- Funders
- National Natural Science Foundation of China (11072185, 11321062, 11372239, 61025002)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Nanomaterials and Printing Technologies
- Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
- Keywords
- polyacrylamide hydrogel, transparent hydrogels, water holding capacity, lithium chloride, electrolytes, stretchable transparent electrodes, flexible electronics, hydrogel dehydration
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