基于电纺NiI_(2)/TPU纳米纤维膜的湿敏变色传感器的制备及性能  

Preparation and properties of colorimetric humidity sensor based on electrospun NiI_(2)/TPU nanofibrous membrane

作　　者：朱俊荣 王潮霞 ZHU Junrong;WANG Chaoxia(Key Laboratory of Eco-Textile,Ministry of Education,College of Textile Science and Engineering,Jiangnan University,Wuxi 214122,Jiangsu,China)

机构地区：[1]江南大学纺织科学与工程学院,生态纺织教育部重点研究室,江苏无锡214122

出　　处：《精细化工》2021年第12期2471-2477,共7页Fine Chemicals

基　　金：国家自然科学基金(21975107)。

摘　　要：以热塑性聚氨酯(TPU)母粒、碘化镍为原料,通过静电纺丝法制备了基于碘化镍/热塑性聚氨酯(NiI_(2)/TPU)纳米纤维膜,将NiI_(2)/TPU纳米纤维膜贴合在聚酰亚胺(PI)基叉指电极上制得湿度传感器。对纳米纤维膜的表面形貌及微观结构进行了表征分析,并研究了该传感器基于颜色变化和电阻电容响应的湿度敏感特性。结果表明,由于碘化镍的颜色变化特性,随相对湿度(RH)从0增加到97%,NiI_(2)/TPU纳米纤维膜显示了从橘红色到黄绿色的颜色转变。此外,该湿度传感器表现出快速的响应/回复时间(0.9 s/9.9 s)、较宽的湿度监测区间(0~97%RH)、较小的洄滞度(0.4%RH)以及优异的稳定性能(>30 d)。A NiI_(2)/TPU nanofibrous membrane was prepared by electrospinning using thermoplastic polyurethane(TPU)and NiI_(2) as raw materials.Then,a humidity sensor was obtained by fitting Ni I_(2)/TPU nanofibrous membrane on polyimide(PI)based interdigital electrode.The surface morphology and microstructure of nanofibrous membrane were characterized and analyzed.And the humidity sensitive characteristics of the humidity sensor based on color change and resistance capacitance response were studied.The results showed that the color of NiI_(2)/TPU nanofibrous membrane changed from tangerine to chartreuse with the increase of relative humidity(RH)from 0 to 97%due to the color change characteristics of NiI_(2).In addition,the sensor had fast response and recovery time(0.9 s/9.9 s),wide humidity monitoring range(0~97%RH),lower hysteresis(0.4%RH)and excellent stability(at least 30 d).

关 键 词：碘化镍 热塑性聚氨酯 静电纺丝 湿敏变色 湿度传感器 功能材料 

分 类 号：TQ342[化学工程—化纤工业] TP212[自动化与计算机技术—检测技术与自动化装置]