Cheng Ya, Ren Xiuyan, Gao Guanghui, Duan Lijie
Polymeric and Soft Materials Laboratory, School of Chemistry and Life Science and Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, PR China.
Polymeric and Soft Materials Laboratory, School of Chemistry and Life Science and Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, PR China.
Carbohydr Polym. 2019 Nov 1;223:115051. doi: 10.1016/j.carbpol.2019.115051. Epub 2019 Jul 17.
The gel-based sensor was extensively investigated due to the flexible and extensible properties. Here, a flexible, excellent mechanical (fracture energy of 5238 kJ/m) and anti-freezing ionic conductive carboxymethyl cellulose-based organohydrogel sensor was prepared via Fe cross-linked sodium carboxymethyl cellulose (CMC) as the first network and covalently cross-linked polyacrylamide as the second network in the co-solvents of water and ethylene glycol. Owing to the clipping transportation of Fe in the water channels, the gel sensor had good sensitivity (GF = 1.4, 0˜30% strain) and fast strain-responsiveness (0.98 s) to monitor the subtle motions of human body. The CMC-based organohydrogel with high strain-sensitivity exhibited more potential applications of next-generation bioelectronic materials and devices.
由于具有柔韧性和可扩展性，基于凝胶的传感器受到了广泛研究。在此，通过以铁交联羧甲基纤维素钠（CMC）作为第一网络、以共价交联聚丙烯酰胺作为第二网络，在水和乙二醇的共溶剂中制备了一种柔性、机械性能优异（断裂能为5238 kJ/m）且抗冻的离子导电羧甲基纤维素基有机水凝胶传感器。由于铁在水通道中的截留传输，该凝胶传感器具有良好的灵敏度（GF = 1.4，0至30%应变）和快速的应变响应性（0.98 s），可用于监测人体的细微动作。具有高应变灵敏度的基于CMC的有机水凝胶在下一代生物电子材料和器件方面展现出更多潜在应用。
