A humidity sensor based on interpenetrating polymer network prepared from poly(dimethylaminoethyl methacrylate) and poly(glycidyl methacrylate)

被引：66
|
作者：
Li, Yang [1 ]
Chen, Yousi [1 ]
Zhang, Cong [1 ]
Xue, Tianxiang [1 ]
Yang, Mujie [1 ]
机构：
[1] Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2007年 / 125卷 / 01期
基金：
中国国家自然科学基金;
关键词：
humidity sensor; humidity sensitive properties; interpenetrating polymer network; poly(dimethylaminoethyl methacrylate); poly(glycidyl methacrylate);
D O I：
10.1016/j.snb.2007.01.048
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Humidity sensitive polymeric thin films with an interpenetrating network (IPN) structure were prepared by cross-linking reactions of poly(dimethylaminoethyl methacrylate) and poly(glycidyl methacrylate) with 1,4-dibromobutane (DBB) and diethyltriamine (DETA) as cross-linking agents, respectively. The humidity sensors so prepared showed a high sensitivity over a wide range of relative humidity (RH) (20-97 % RH) and a small hysteresis (similar to 2 % RH). The response time for adsorption and desorption process between 22 and 84 % RH was 4 and 20 s, respectively, indicating a fast response. The effects of the concentration of polymers, molar ratio of cross-linking agents and polymers and aging time of the precursor solution for dip-coating on their humidity sensitive properties were investigated. (c) 2007 Elsevier B.V. All rights reserved.
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页码：131 / 137
页数：7
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