Humidity sensitive properties of quaternary ammonium salts containing polyelectrolytes crosslinked with 2-oxazoline crosslinker

被引：17

作者：

Lee, CW ^{[1
]}

Park, HS ^{[1
]}

Gong, MS ^{[1
]}

机构：

[1] Dankook Univ, Dept Chem, Cheonan 330714, Chungnam, South Korea

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2005年 / 109卷 / 02期

关键词：

humidity sensor; 2-oxazoline crosslinker; polyelectrolyte; reactive copolymer;

D O I：

10.1016/j.snb.2004.12.057

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

New 2-oxazoline group-containing copolymer crosslinkers for humidity-sensitive polyelectrolytes were prepared by copolymerization of [2-(methacryloyloxy)ethyl]trimethyl ammonium chloride (METAL), 2-isopropenyl-2-oxazoline (IPO) and n-butyl methacrylate (BMA). They were mutually crosslinkable with carboxylic acid-containing copolymers METAC/acrylic acid (AA)BMA = 10/2/8. When the polyelectrolytes were applied to the humidity-sensitive membranes, the resistance varied from 10(7) to 10(3) Omega between 20% RH and 95% RH, which was required for a humidity sensor operating at ambient humidity. Temperature dependence, hysteresis, response time, water durability and long-term stability at high humidity were also measured and estimated. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：256 / 263

页数：8

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