期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 151, 期 -, 页码 730-739出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2020.02.225
关键词
Kraft lignin; Ultrathin carbon fiber; Wearable sensor
资金
- National Natural Science Foundation of China [51903128]
- Shandong Provincial Natural Science Foundation, China [ZR2018BEM028]
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University [KF1807]
- China Postdoctoral Science Foundation [2018M632620]
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University [K2019-11]
In an attempt to diversify lignin applications, in this study, electrospun mats composed of ultrathin carbon fibers from Eucalyptus globulus Lignin (EKL) and sugarcane bagasse Kraft lignin (BKL) capable of detecting certain human body motions were fabricated and their chemical structures fully investigated accordingly. Results suggested that the main chemical structure of EKL was slightly linear with sinapyl alcohol and coniferyl alcohol as the basic units and pinoresinol, arylglycerol-beta-aryl ether, phenylcoumaran, with diphenylethane as the main linkages. The slightly linear EKL and cross-linked BKL tended to form amorphous carbon and graphite crystallites under the same heat treatment process respectively, thereby resulting in a large difference in the resistance of fabricated sensors. The amplitude of signals due to changes in the relative resistance (Delta R/R-0) for EKL ultrathin carbon fiber (CF)-based sensor was approximately 9 x 10(4) during the linger bending process, while large (Delta R/ R-0 similar to 380) and small (Delta R/R-0< 10) relative resistance variations due to BKL-CF-based sensors were detected during the arm bending and finger pressing motions respectively. (C) 2020 Elsevier B.V. All rights reserved.
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