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Water‐Processable, Stretchable, Self‐Healable, Thermally Stable, and Transparent Ionic Conductors for Actuators and Sensors

Title of paper
Water‐Processable, Stretchable, Self‐Healable, Thermally Stable, and Transparent Ionic Conductors for Actuators and Sensors
Author
[박태호 교수 연구실]
Publication in journal
Advanced Materials, 2020, 32, 1906679
Publication date
20200218

 

 

[Abstract]

For emerging biocompatible, wearable, and stretchable epidermal electronic devices, it is essential to realize novel stretchable conductors with the attributes of transparency, low-cost and nontoxic components, green-solvent processability, self-healing, and thermal stability. Although conducting materials–rubber composites, ionic hydrogels, organogels have been developed, no stretchable material system that meets all the outlined requirements has been reported. Here, a series of P(SPMA-r-MMA) polymers with different ratios of ionic side chains is designed and synthesized, and it is demonstrated that the resulting stretchable ionic conductors with glycerol are transparent, water processable, self-healable, and thermally stable due to the chemically linked ionic side chain, satisfying all of the aforementioned requirements. Among the series of polymer gels, the P(SPMA0.75-r-MMA0.25) gel shows optimum conductivity (6.7 × 104 S cm1), stretchability (2636% of break at elongation), and self-healing (98.3% in 3 h) properties. Accordingly, the transparent and self-healable P(SPMA0.75-r-MMA0.25) gels are used to realize thermally robust actuators up to 100 °C and deformable and self-healable thermal sensors.

DOI: 10.1002/adma.201906679

Link: https://onlinelibrary.wiley.com/doi/epdf/10.1002/adma.201906679