Key Laboratory of Special Functional Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
Key Laboratory of Special Functional Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
Carbohydr Polym. 2022 Nov 1;295:119890. doi: 10.1016/j.carbpol.2022.119890. Epub 2022 Jul 21.
Recently, wearable hydrogel sensors based on polypyrrole have shown considerable promise in the realms of human-machine interfaces. However, because of the water insolubility of pyrrole and polypyrrole, the preparation of polypyrrole conductive hydrogels with comprehensive properties by a simplified method remains a great challenge. Herein, the water-soluble polypyrrole was synthesized and the conformal CP conductive hydrogels were fabricated by the strategy of one-pot method of introducing chitosan and water-soluble polypyrrole into acrylamide matrix containing cucurbit[7]uril. The hydrogel exhibited good mechanical strength (215.48 kPa at the fracture strain of 2149.17 %), superior adhesion strength (~51.54 kPa), excellent conductivity (0.534 S m) and biocompatibility (The cell viability of NIH3T3 is 98.25 %). As a strain sensor, CP hydrogel exhibited excellent stability during 1000 times cycles, which is suitable for epidermal sensors to monitor body motions and physiological signals. Therefore, the chitosan-driven conductive hydrogel would present prosperous prospects in the fields of human-machine interfaces.
最近，基于聚吡咯的可穿戴水凝胶传感器在人机界面领域显示出了相当大的应用前景。然而，由于吡咯和聚吡咯不溶于水，因此通过简化的方法制备具有综合性能的聚吡咯导电水凝胶仍然是一个巨大的挑战。本文通过将壳聚糖和水溶性聚吡咯引入含有杯[7]芳烃的丙烯酰胺基质中的一锅法策略，合成了水溶性聚吡咯，并制备了共形 CP 导电水凝胶。该水凝胶表现出良好的机械强度（断裂应变为 2149.17%时为 215.48kPa）、较高的粘附强度（约 51.54kPa）、优异的导电性（0.534S m）和生物相容性（NIH3T3 的细胞活力为 98.25%）。作为应变传感器，CP 水凝胶在 1000 次循环中表现出优异的稳定性，适用于表皮传感器来监测身体运动和生理信号。因此，壳聚糖驱动的导电水凝胶在人机界面领域具有广阔的应用前景。
