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.

引用

页码：131 / 137

页数：7

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