期刊
MATERIALS & DESIGN
卷 141, 期 -, 页码 276-285出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2017.12.046
关键词
Chitosan; Carbon black; Sensor; Mechanical property; Structure; Sensitivity
资金
- National High Technology Research and Development Program of China [2015AA020915]
- National Natural Science Foundation of China [51473069, 51502113]
- Guangdong Natural Science Funds for Distinguished Young Scholar [S2013050014606]
- Guangdong Special support program [2014TQ01C127]
- Science and Technology Planning Project of Guangdong Province [2014A020217006]
- Pearl River S&T Nova Program of Guangzhou [201610010026]
Chitosan (CS)/carbon black (CB) composite sponges with high electrical conductivity and strain sensing sensitivity are prepared by combining solution-mixing and freeze-drying techniques. CB nanoparticles with diameter of similar to 40 nm play the role of a conductive component in the CS/CB composites. CB can form a continuous filler network in CS, which leads to the increase in viscosity and shear modulus. When writing and drying the CS/CB conductive ink, conductive tracks are obtained. With the increase in CB content, the density, electrical conductivity, compressive properties, and thermal stability of CS sponges are improved. The X-ray diffraction and Fourier transforms infrared spectroscopy results show CB are successfully compounded into CS matrix. The addition of CB leads to a slight decrease in the porosity of CS sponges. Sensing performances of CS/CB composite sponges are investigated by detecting various human activities including pronouncing, breathing, and joint bending. CS/CB composite sponges show good sensitivity and stability after several hundred loops. CS/CB composite sponges combine the advantages of low-cost, easy fabricating process, flexible, and high performance, which make them show great potentials in highly sensitive strain sensor. (c) 2017 Elsevier Ltd. All rights reserved.
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