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課題組關于導電凝膠材料的研究論文在ACS Applied Materials & Interfaces在線發表

題目:

Highly Stretchable, Fatigue Resistant, Electrically Conductive and Temperature Tolerant Ionogels for High-performance Flexible Sensors

作者:

Jialiang Lai,Hongwei Zhou,Zhaoyang Jin,Shuangli Li,Hanbin Liu,Xilang Jin,Chunyan Luo,Aijie Ma,Weixing Chen

文章信息:

ACS Appl. Mater. Interfaces, Just Accepted Manuscript, https://doi.org/10.1021/acsami.9b10146

論文鏈接:

https://pubs.acs.org/doi/10.1021/acsami.9b10146

摘要:

Ionogels are ideal candidate materials for flexible sensors, but their stretchability and fatigue resistance are limited. Herein, highly stretchable, fatigue resistant, electrically conductive and temperature tolerant ionogels are investigated and further applied in fabricating high-performance flexible sensors. The ionogels consist of a poly(acrylic acid) (PAA) network and a commonly used room temperature ionic liquid (RTIL) named 1-ethyl-3-methylimidazolium dicyanamide ([EMIm][DCA]). Dually acrylated Pluronic F127 (F127DA) was utilized to crosslink PAA network and [EMIm][DCA] was physically confined in PAA network. Owing to their special crosslinking structure, the PAA ionogels are highly stretchable (>850 %), tough and fatigue resistant, and they are also conductive, transparent and temperature tolerant because of the existence of [EMIm][DCA]. On the basis of their integrated performances, the PAA ionogels were further utilized to fabricate strain sensors and pressure sensors. The ionogel-based strain sensors have high sensitivity, low response time (200 ms), wide strain sensing range (0-750%), excellent durability (>1400 cycles) and good temperature tolerance and can be applied to detect various human motions. The pressure sensors also have high response speed (256 ms) and excellent sensitivity (GF=0.73 kPa-1), which offers an opportunity to detect force generated by finger touching and water droplets.

恭喜賴佳亮同學,再接再厲!

感謝國家自然科學青年基金(No. 51603164)、陜西省高校青年杰出人才計劃,陜西省自然科學基礎研究計劃項目(2019JM-124, 2016JQ5036)、陜西省高校科協青年人才托舉計劃項目(No. 20170706)對本工作的資助。

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