Fabrication and electrical and humidity-sensing properties of a flexible and stretchable textile humidity sensor
Fabrication and electrical and humidity-sensing properties of a flexible and stretchable textile humidity sensor
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DOI：
10.1016/j.jtice.2018.03.050
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发表时间：
2018-06
影响因子：
5.7
通讯作者：
P. Su;Chun-Fu Chang
中科院分区：
文献类型：
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作者：
P. Su;Chun-Fu Chang
通过编织白色棉织物形成具有一对由导电纱线制成的平行电极的基底，然后在编织的纺织基底上喷涂甲基丙烯酸甲酯（MMA）和[3-（甲基丙烯氨基）丙基]三甲基氯化铵（MAPTAC）（聚-MMA/MAPTAC）的共聚物以形成湿度传感膜，制备了一种新型柔性可拉伸纺织阻抗型湿度传感器。研究了Poly-MMA-MAPTAC浓度对纺织阻抗型湿度传感器灵敏度、柔韧性和拉伸性的影响。 10vol.% 聚 MMA/MAPTAC 涂层纺织阻抗型湿度传感器具有非常高的拉伸性、高灵活性、宽工作范围、高灵敏度、可接受的线性度、低滞后、快速响应/恢复时间以及在 20-90% RH 相对湿度 (RH) 范围内的长期稳定性。使用复阻抗谱解释了纺织品阻抗型湿度传感器的湿度传感机制。快速傅里叶变换（FFT）用于区分弯曲下的纺织品阻抗型湿度传感器和人体呼吸监测。
A novel flexible and stretchable textile impedance-type humidity sensor was fabricated by weaving white cotton fabric to form a substrate with a pair of parallel electrodes that were made of conductive yarns, and then spray-coating the as-woven textile substrate with a copolymer of methyl methacrylate (MMA) and [3-(methacrylamino)propyl] trimethyl ammonium chloride (MAPTAC) (poly-MMA/MAPTAC) to form a humidity-sensing film. The effects of the concentration of poly-MMA-MAPTAC on the sensitivity, flexibility and stretchability of the textile impedance-type humidity sensor were studied. The 10 vol.% poly-MMA/MAPTAC-coated textile impedance-type humidity sensor had very high stretchability, high flexibility, wide working range, high sensitivity, acceptable linearity, low hysteresis, fast response/recovery time and long-term stability over a relative humidity (RH) range of 20–90% RH. The humidity-sensing mechanism of the textile impedance-type humidity sensor was explained using complex impedance spectra. The fast Fourier transform (FFT) was used to discriminate between a textile impedance-type humidity sensor under bending and human breath monitoring.