Preparation of poly(o-toluidine)/TiO2 nanocomposite films and application for humidity sensing
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- 作者：Tieli Zhou ; Xiuhong Xie ; Jianyan Cai ; Liying Yin ; Weidong Ruan
- 关键词：Poly(o ; toluidine) ; Film ; Humidity sensing
- 刊名：Polymer Bulletin
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：73
- 期：3
- 页码：621-630
- 全文大小：621 KB
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Xiuhong Xie (1)
Jianyan Cai (1)
Liying Yin (1)
Weidong Ruan (2)
1. College of Food Engineering and Landscape Architecture, Changchun University, Changchun, 130012, People’s Republic of China
2. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, People’s Republic of China - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Polymer Sciences
Characterization and Evaluation Materials
Soft Matter and Complex Fluids
Physical Chemistry - 出版者：Springer Berlin / Heidelberg
- ISSN：1436-2449
文摘
Conducting poly(o-toluidine) (POT)/titanium dioxide (TiO2) nanocomposite films have been synthesized by in situ chemical oxidation polymerization of o-toluidine in the presence of TiO2 nanoparticles. The nanocomposite films were characterized by Fourier transform infrared (FT–IR) spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The characterization results confirmed the polymerization of o-toluidine and the strong interaction between POT and TiO2 nanoparticles. The humidity-sensing property of the films was tested by measuring the direct current electric resistance at two relative humidity (RH) values, 11 and 97 %, respectively. The POT/TiO2 nanocomposite films exhibited quick response and recovery times, which were about 38 and 6 s, respectively. Both the response and recovery time are faster than those of pure POT films. The results indicate that the POT/TiO2 nanocomposite films have better sensing property than pure POT films. The increasing humidity sensitivity of the POT/TiO2 nanocomposite films attributes to the synergic adsorption of the water molecules from both POT and TiO2, and the high surface areas of nanocomposite films.