A fast response resistive thin film humidity sensor based on poly(4-vinylpyridine) and poly(glycidyl methacrylate)

作者：Chen Y S; Li Y; Yang M J^*

来源：Journal of Applied Polymer Science, 2007, 105(6): 3470-3475.

DOI：10.1002/app.26401

• sensors
• thin films
• polyelectrolytes
• interpenetrating networks
• radical polymerization

Humidity sensitive films with the structure of an interpenetrating network were prepared through simultaneous quaternization and crosslinking of poly(4-vinylpyridine) and poly(glycidyl methacrylate) with 1,4-dibromobutane and diethyltriamine, respectively, on the interdigital electrodes. The effect of the composition of humidity sensitive film and the concentration of dip-coating solution on the humidity sensitive properties of the sensors have been investigated. The humidity sensors so prepared exhibit little hysteresis (<1% RH [relative humidity]) and the response time for adsorption and desorption between 80% RH and 54% RH is about 21 s and 3 s, respectively, suggesting a very fast response.

• 出版日期2007-9-15
• 单位浙江大学