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Electrical resistance response of poly(ethylene oxide)-based conductive composites to organic vapors: Effect of filler content, vapor species, and temperature

Authors

  • Ji Wen Hu,

    1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650,People's Republic of China
    2. Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Zhongshan University, Guangzhou 510275, People's Republic of China
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  • Gen Shui Cheng,

    1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650,People's Republic of China
    2. Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Zhongshan University, Guangzhou 510275, People's Republic of China
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  • Ming Qiu Zhang,

    Corresponding author
    1. Materials Science Institute, Zhongshan University, Guangzhou 510275, People's Republic of China
    • Materials Science Institute, Zhongshan University, Guangzhou 510275, People's Republic of China
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  • Ming Wei Li,

    1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650,People's Republic of China
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  • Ding Shu Xiao,

    1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650,People's Republic of China
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  • Shi Guo Chen,

    1. Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Zhongshan University, Guangzhou 510275, People's Republic of China
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  • Min Zhi Rong,

    1. Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Zhongshan University, Guangzhou 510275, People's Republic of China
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  • Qiang Zheng

    1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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Abstract

In this work conductive composites consisting of carbon black (CB) and poly(ethylene oxide) were prepared by solution mixing. The composites' resistance drastically changes in organic vapors so that the composites can be used as candidates for gas-sensing materials. Owing to the different conduction mechanisms and solvent/composites interactions, the electrical response behaviors of the composites exhibit specific dependences on CB content and environmental temperature, which were only reported previously in a few instances. In addition, the rate of response was also correlated with solvent polarity, solubility, etc. The findings would help to understand the micromechanism of response of the composites and to improve the sensing performance as well. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 1517–1523, 2005

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