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3D printed mechanical robust cellulose derived liquid-free ionic conductive elastomer for multifunctional electronic

Chuanwei Lu1, Xinyu Wang2, Qianqian Jia2

  • 1Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), No 16, Suojin Wucun, Nanjing 210042, China.

Carbohydrate Polymers
|November 20, 2023
PubMed
Summary

Researchers developed 3D printed cellulose-derived ionic conductive elastomers (ICEs) for robust wearable sensors. These bio-based ionic gels offer high conductivity and mechanical strength for advanced electronic devices.

Keywords:
3D printingCelluloseIonic conductive elastomerLiquid-freeWearable electronic devices

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Biomaterials Engineering

Background:

  • Ionic gel-based wearable electronics require mechanical robustness and high conductivity.
  • Developing customizable, bio-based ionic gels for multifunctional sensors remains a challenge.

Purpose of the Study:

  • To prepare 3D printed, cellulose-derived ionic conductive elastomers (ICEs).
  • To achieve high mechanical toughness, conductivity, and environmental stability in bio-based ionic gels.
  • To demonstrate the application of these ICEs in multifunctional wearable sensors.

Main Methods:

  • One-step photo-polymerization of polymerizable deep eutectic solvents.
  • Utilizing carboxylate cellulose nanocrystals (C-CNCs) as a bio-template for in-situ aniline polymerization.
  • Fabrication of 3D printed cellulose-derived ionic conductive elastomers.

Main Results:

  • Achieved high conductivity (58.7 mS/m) by preventing polyaniline aggregation using C-CNCs.
  • Engineered ICEs with high mechanical strength (4.4 MPa) and toughness (13.33 MJ*m^-3) via hydrogen and coordination bonds.
  • Demonstrated excellent environmental stability and elasticity.

Conclusions:

  • The developed ICEs exhibit superior mechanical and conductive properties for wearable applications.
  • This work presents a promising strategy for next-generation strong, tough, bio-based ionic gels.
  • The ICEs enable reliable real-time detection of human motion, respiration, and body temperature.