A flexible strain sensor from polypyrrole-coated fabrics
A flexible strain sensor from polypyrrole-coated fabrics
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DOI：
10.1016/j.synthmet.2005.06.008
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发表时间：
2005-10-15
期刊：
影响因子：
4.4
通讯作者：
Yuen, CWM
中科院分区：
文献类型：
--
作者：
Li, Y;Cheng, XY;Yuen, CWM
导电聚合物涂层织物作为智能材料在过去的几年里一直在研究。本文报道了一种由聚吡咯涂层织物制成的柔性应变传感器，该传感器具有灵敏度高、稳定性好等特点。提高传感器灵敏度和稳定性的策略包括：（a）用化学气相沉积（CVD）法在织物表面形成聚吡咯（PPy）薄膜，（B）吡咯的低温聚合，（c）在PPy膜中引入大的十二烷基苯磺酸根阴离子，（d）PPy涂层导电织物的退火。电导率-应变测试表明，所开发的传感器具有类似于80的高应变灵敏度的变形高达50%，而其良好的稳定性是由电导率和灵敏度的小变化超过9个月的存储时间的支持。研究了温度和湿度对应变传感器电导率的影响。(C)2005 Elsevier B. V.保留所有权利。
Conductive-polymer coated fabrics have been investigated as intelligent materials in the past years. In this paper, a flexible strain sensor from polypyrrole-coated fabrics which is featured with high sensitivity, good stability is reported. The strategies used for enhancing the sensitivity and stability of the sensor include: (a) the formation of thin coatings of polypyrrole (PPy) on the surface of fabrics using the chemical vapor deposition (CVD) method, (b) low temperature polymerization of pyrrole, (c) introduction of large docecyl benzene sulfonate anion in PPy film and (d) annealing of the PPy-coated conductive fabrics. The conductivity-strain tests reveal that the developed sensor exhibits a high strain sensitivity of similar to 80 for a deformation as large as 50%, while its good stability is supported by the small changes in conductivity and sensitivity over a storage time of 9 months. The effect of the temperature and humidity on the conductivity of the strain sensor is investigated. (C) 2005 Elsevier B.V. All rights reserved.