Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7146960 | Sensors and Actuators B: Chemical | 2014 | 7 Pages |
Abstract
A porous polymer was synthesized through self-polymerization of monomer 3-hydroxybenzoic acid by the Friedel-Crafts alkylation reaction. To enhance hydrophilic properties of the resultant polymer (P3HBA), it was treated with lithium hydroxide to obtain lithium-modified polymer (Li@P3HBA). The structures of P3HBA and Li@P3HBA were characterized and their humidity sensitive properties were researched. Compared with P3HBA sensor, Li@P3HBA sensor exhibited improved humidity sensing properties. Li@P3HBA sensor showed the impedance change of three orders of magnitude at the whole humidity range, with a good linearity, litter hysteresis, rapid response and good long-term stability. Our results demonstrated that lithium-modified polymer with stable porous hydrophilic framework had the potential to fabricate humidity sensor for practical application.
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Authors
Kai Jiang, Da Kuang, Teng Fei, Tong Zhang,