Effect of soft segments of waterborne polyurethane on organic vapor sensitivity of carbon black filled waterborne polyurethane composites

被引：11
作者：
Zhao, Bin
Fu, Ruo Wen
Zhang, Ming Qiu [1 ]
Yang, Hong
Rong, Min Zhi
Zheng, Qiang
机构：
[1] Zhongshan Univ, Inst Mat Sci, Guangzhou 510275, Peoples R China
[2] Zhongshan Univ, Minist Educ, Key Lab Polymer Composite & Funct Mat, Guangzhou 510275, Peoples R China
[3] Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China
来源：
POLYMER JOURNAL | 2006年 / 38卷 / 08期
基金：
中国国家自然科学基金;
关键词：
waterborne polyurethane; conductive polymer composites; vapor sensitivity; structure-property relationship;
D O I：
10.1295/polymj.PJ2005202
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In the present work, three types of waterborne polyurethane (WPU) were synthesized, in which poly(ethylene oxalate glycol), poly(propylene oxide) and poly(tetramethylene ether glycol) acted as the soft segments, respectively. The WPUs were then compounded with carbon black (CB) to fabricate gas sensing composites. By studying the composites' resistance variation in different solvent-vapors, it was found that the structures of the WPUs remarkably affected the composites' response behaviors. Both polarity and flexibility of the soft segments of WPU determine to a great extent the solvent-polymer interaction and preferential localization of solvent and fillers, resulting in different magnitudes of resistance increase and rates of response.
引用
收藏
页码：799 / 806
页数：8
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