期刊
CELLULOSE
卷 27, 期 11, 页码 6287-6297出版社
SPRINGER
DOI: 10.1007/s10570-020-03171-0
关键词
Humidity sensor; Cellulose; Carbon nanotube; Relative resistance response; Mechanical performance
资金
- National Key Research and development Program of China [2018YFB0704200]
- National Natural Science Foundation of China [51803140, 51973141, 51533004, 21776186]
- Science and Technology Department of Sichuan Province [2018JY0584]
- State Key Laboratory of Polymer Materials Engineering [sklpme2019-2-06]
- Fundamental Research Funds for the Central Universities [yj201795]
It is a long-standing issue to develop conductive polymer composites as humidity sensor with rapid response, high reproducibility and good long-term stability. Herein, a simple, efficient, and environmentally benign strategy was proposed to fabricate highly porous, robust and conductive cellulose composite aerogels. Owing to the intrinsic high specific surface area and well-defined electrically conductive network, the as-prepared cellulose composite aerogels were highly sensitive to water vapor with a relative resistance response value of as high as similar to 1000% at a CNT loading of 0.19 vol%. The dense hydrogen bonding network endowed high reproducibility and good long-term stability to cellulose composite aerogels. Moreover, a significant improvement in the mechanical properties of cellulose composite aerogels was achieved, outperforming neat cellulose aerogel with the increments of similar to 149.2% and similar to 242.1% in compressive strength and modulus, respectively. The green, robust, highly sensitive cellulose composite aerogels are in great potential need as humidity sensors in biology and automated industrial processes. [GRAPHICS] .
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