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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
Author(s) -
Hu Ji Wen,
Cheng Gen Shui,
Zhang Ming Qiu,
Li Ming Wei,
Xiao Ding Shu,
Chen Shi Guo,
Rong Min Zhi,
Zheng Qiang
Publication year - 2005
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.21973
Subject(s) - materials science , composite material , carbon black , oxide , solubility , ethylene oxide , solvent , mixing (physics) , electrical conductor , electrical resistance and conductance , filler (materials) , electrical resistivity and conductivity , ethylene , polymer , chemistry , organic chemistry , copolymer , natural rubber , physics , catalysis , quantum mechanics , electrical engineering , metallurgy , engineering
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