Preparation of stable crosslinked polyelectrolyte and the application for humidity sensing

被引：36

作者：

Dong, Wenyue ^{[1
]}

Ma, Zhihua ^{[1
]}

Duan, Qian ^{[1
]}

机构：

[1] Changchun Univ Sci & Technol, Sch Mat Sci & Engn, Changchun 130022, Jilin, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2018年 / 272卷

关键词：

Humidity sensor; Crosslinked polyelectrolyte; Porous polymer; Polymer blending; QUANTUM DOTS; THIN-FILM; SENSOR; POLYMER; COMPOSITE; POLYANILINE; NANOCOMPOSITE; GEL;

D O I：

10.1016/j.snb.2018.05.140

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In order to obtain stable humidity sensitive polyelectrolyte, crosslinked polyelectrolyte with cage-shaped polyhedral oligomeric silsesquioxane (POSS) and hydrophilic tetraphenylphosphonium bromide (TPPBr) units has been synthesized via Friedel-Crafts alkylation. The obtained polyelectrolyte POSS-TPPBr owns both porous structure and hydrophilic property. The structure of POSS-TPPBr has been characterized with fourier transform infrared spectroscopy (FT-IR), nitrogen (N-2) isotherms and scanning electron microscopy (SEM). Humidity sensor based on POSS-TPPBr was prepared, which demonstrated a good response towards humidity, with impedance changing three orders of magnitude over the whole relative humidity (RH) range and little humidity hysteresis. Further, the composited film of POSS-TPPBr blended with polystyrene (PS) was developed to enhance the film-forming capability of the crosslinked polymer. As we expected, the humidity hysteresis and recovery speed of POSS-TPPBr/PS sensor have been improved compared with POSS-TPPBr sensor.

引用

页码：14 / 20

页数：7

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