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| Study on Performance Improvement of Conductive Gels by Polypyrrole/Cellulose Nanofiber Composites |
| Received:September 30, 2025 Revised:November 22, 2025 |
| DOI：10.11981/j.issn.1000-6842.2026.03.158 |
| Key Words:cellulose nanofiber;acrylamide;polypyrrole;gel;sensor |
| Fund Project:国家自然科学基金32301528中国博士后科学基金2023M731165国家重点研发计划2022YFC2105503国家自然科学基金（32301528）；中国博士后科学基金（2023M731165）；国家重点研发计划（2022YFC2105503）。 |
| Author Name | Affiliation | Postcode | | Zhao Lingjun* | 1School of Light Industry Science and Engineering， Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457
2National Key Lab of Bio-based Fiber Materials， Tianjin， 300457 | 300457 | | Liu Yuting | 1School of Light Industry Science and Engineering， Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457
2National Key Lab of Bio-based Fiber Materials， Tianjin， 300457 | 300457 | | Han Xiaoqin | 3Wuzhou Special Paper Group Co.， Ltd.， Quzhou， Zhejiang Province， 324000 | 324000 | | Ding Dayong* | 1School of Light Industry Science and Engineering， Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457
2National Key Lab of Bio-based Fiber Materials， Tianjin， 300457 | 300457 | | Zhang Fengshan* | 4Shandong Yellow River Delta Biotechnology Industry Research Institute Co.， Ltd. Dongying， Shandong Province， 257345 | 257345 |
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| Abstract: |
| In this study， composite conductive gel DES-PPy/CNF-PAM with excellent mechanical， conductive， antifreezing， adhesive and strain-sensing properties was fabricated using choline chloride/ethylene glycol deep eutectic solvent （DES）， acrylamide （AM）， polypyrrole/cellulose nanofiber composite （PPy/CNF） and tannic acid as raw materials. The effect of the mass fraction of PPy/CNF on the performances of the composite conductive gel was systematically investigated. The results showed that the composite conductive gel achieved optimal comprehensive performances at a PPy/CNF mass fraction of 1.5%. Its fracture strain reached 910%， and the room-temperature conductivity was 1.234 S/m， which were 3.8-fold and 4.8-fold those of the gel without PPy/CNF， respectively. Meanwhile， this composite conductive gel exhibited outstanding adhesion to diverse substrates and reliable strain-sensing capability. It could still maintain favorable flexibility and stable conductive capacity even at an ultra-low temperature of -40 ℃. |
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