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水凝胶应变传感器研究在Journal of Materials Chemistry C在线发表!
来源:周宏伟教授个人网站 发布日期:2018-08-08

课题组水凝胶应变传感器最新研究结果在Journal of Materials Chemistry C 在线发表,这是课题组继ACS Applied Materials & Interfaces之后在水凝胶领域的又一篇1区论文。

该工作得到了国家自然科学青年基金、陕西省自然科学基础研究计划项目、陕西省高校科协青年人才托举计划项目、陕西省普通高校青年杰出人才支持计划的资助。

谢谢大家的支持!

文章信息:

Zhiwen Wang, Hongwei Zhou,* Jialiang Lai, Bo Yan, Hanbin Liu, Xilang Jin,* Aijie Ma, Gai Zhang, Weifeng Zhao, Weixing Chen*,Extremely Stretchable and Electrically Conductive Hydrogels with Dually Synergistic Network for Wearable Strain Sensors, Journal of Materials Chemistry C, 2018, Accepted. (SCI一区,IF=5.976)

链接:

http://pubs.rsc.org/en/content/articlelanding/2018/tc/c8tc02505c/unauth#!divAbstract

摘要:

Flexible strain sensors are highly repuired in soft robotics, human-machine interfaces and health monitoring devices. However, it is still a big challenge to construct strain sensors with excellent mechanical properties and broad sensing range. In this study, a kind of extremely stretchable and electrically conductive hydrogels with dually synergistic networks are fabricated for wearable resistive-type strain sensors. Dually synergistic networks are composed of soft poly(acrylic acid) (PAA) network and rigid conductive polyaniline (PANI) network. PAA network is crosslinked by amphiphilic block copolymers, PANI network is chemically doped and ionically crosslinked by phytic acid and these two networks are further interlocked by physical entanglements, hydrogen bonds and ionic interactions. The resulting hydrogels have high tensile strength, controllable conductivity and large tensile deformation (1160%). Moreover, the hydrogels are utilized for fabricating strain sensors with good sensitivity and wide sensing range (0~1130%). The high performances of hydrogels make such strain sensors suitable for wearable devices monitoring both subtle and large strains induced by human motions, including moving of two hands, bending of joints, conducting of gestures and swallowing.




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