Self-healing, Stretchable, Temperature-Sensitive and Strain-Sensitive Hydrogel-based Flexible Sensors

Chun-Xia Zhao; Min Guo; Jie Mao; Yun-Tao Li; Yuan-Peng Wu; Hua Guo; Dong Xiang; Hui Li

doi:10.1007/s10118-022-2854-6

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Self-healing, Stretchable, Temperature-Sensitive and Strain-Sensitive Hydrogel-based Flexible Sensors

RESEARCH ARTICLE | Updated：2023-01-18

- Self-healing, Stretchable, Temperature-Sensitive and Strain-Sensitive Hydrogel-based Flexible Sensors
- Chinese Journal of Polymer Science Vol. 41, Issue 3, Pages: 334-344(2023)
- Affiliations：
  
  a.School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, China
  b.State Key Lab of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
  c.The Center of Functional Materials for Working Fluids of Oil and Gas Field, Sichuan Engineering Technology Research Center of Basalt Fiber Composites Development and Application, Southwest Petroleum University, Chengdu 610500, China
- Author bio：
  
  polychem@swpu.edu.cn (C.X.Z.)
  yuntaoli@swpu.edu.cn (Y.T.L.)
- Funds：
- DOI：10.1007/s10118-022-2854-6
  CLC：
- Received：23 June 2022，
  
  Revised：2022-8-7，
  
  Accepted：15 August 2022，
  
  Online First：10 October 2022，
  
  Published：01 March 2023
- Accepted：
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Zhao, C. X.; Guo, M.; Mao, J.; Li, Y. T.; Wu, Y. P.; Guo, H.; Xiang, D.; Li, H. Self-healing, stretchable, temperature-sensitive and strain-sensitive hydrogel-based flexible sensors. Chinese J. Polym. Sci. 2023, 41, 334–344

Chun-Xia Zhao, Min Guo, Jie Mao, et al. Self-healing, Stretchable, Temperature-Sensitive and Strain-Sensitive Hydrogel-based Flexible Sensors[J]. Chinese Journal of Polymer Science, 2023, 41(3): 334-344.
Zhao, C. X.; Guo, M.; Mao, J.; Li, Y. T.; Wu, Y. P.; Guo, H.; Xiang, D.; Li, H. Self-healing, stretchable, temperature-sensitive and strain-sensitive hydrogel-based flexible sensors. Chinese J. Polym. Sci. 2023, 41, 334–344 DOI： 10.1007/s10118-022-2854-6.

Chun-Xia Zhao, Min Guo, Jie Mao, et al. Self-healing, Stretchable, Temperature-Sensitive and Strain-Sensitive Hydrogel-based Flexible Sensors[J]. Chinese Journal of Polymer Science, 2023, 41(3): 334-344. DOI： 10.1007/s10118-022-2854-6.

摘要

Temperature-strain dual sensitive hydrogels

with excellent stretchability

recoverability and self-healing properties were prepared and characterized. The addition of characteristic monomers

N-isopropyl acrylamide (NIPAM)

endows the hydrogels with good temperature responsiveness

which are more suitable for wearable multifunctional sensing devices than single-function hydrogels.

Abstract

Flexible hydrogels have shown promise as strain sensors in medical monitoring

human motion detection and intelligent robotics. For a hydrogel strain sensor

certain challenges need to be urgently addressed for practical applications

such as the damage caused by external effects

leading to equipment failure

and the inability to perceive ambient temperature

resulting in single functionality. Herein

a stretchable

self-healing and dual temperature-strain sensitive hydrogel

with a physically-crosslinked network

is designed by constructing multiple dynamic reversible bonds. Graphene oxide (GO) and iron ions (Fe

) act as dynamic bridges in the cross-linked network and are mediated by the covalent and hydrogen bonding

rendering excellent stretchability to the hydrogel. The reversible features of coordination interactions and hydrogen interactions endow excellent recoverability and self-healing properties. Moreover

the incorporated

-isopropyl acrylamide (NIPAM) provides excellent temperature responsiveness to the hydrogel

facilitating the detection of external temperature changes. Meanwhile

the hydrogels exhibited strain-sensitivity

with a wide working range of 1%−300%

fast response and electrical stability

which can be used as flexible sensors to monitor body motions

e.g.

speaking and the bending of finger

wrist

elbow and knee. Overall

the hydrogel possesses dual sensory capabilities

combining external temperature and strain

for potential applications in wearable multifunctional sensing devices.

关键词

Keywords

references

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