Gas sensitivity of carbon black/waterborne polyurethane composites

被引：98
作者：
Chen, SG
Hu, JW
Zhang, MQ [1 ]
Li, MW
Rong, MZ
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] Chinese Acad Sci, Guangzhou Inst Chem, Guangzhou 510650, Peoples R China
来源：
CARBON | 2004年 / 42卷 / 03期
基金：
中国国家自然科学基金;
关键词：
carbon black; mixing; diffusion; electrical properties;
D O I：
10.1016/j.carbon.2004.01.002
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The synthesis of conductive composites consisting of waterborne polyurethane (WPU) and carbon black (CB) is reported. Besides the low percolation threshold (0.7-0.95 wt%), the composites are quite sensitive to organic solvent vapors regardless of their polarities as characterized by the drastic changes in conductivity. In the case of polar solvents, negative and positive vapor coefficient phenomena of the composites were successively observed with a rise in CB content. It was found that different mechanisms are responsible for the broad applicability of the composites as candidates for gas sensing materials owing to the different interactions among the matrix polymer, the filler particles and the solvent molecules. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：645 / 651
页数：7
相关论文
共 26 条
  • [1] Cross-reactive chemical sensor arrays
    Albert, KJ
    Lewis, NS
    Schauer, CL
    Sotzing, GA
    Stitzel, SE
    Vaid, TP
    Walt, DR
    [J]. CHEMICAL REVIEWS, 2000, 100 (07) : 2595 - 2626
  • [2] Breuer O, 1997, J APPL POLYM SCI, V64, P1097, DOI 10.1002/(SICI)1097-4628(19970509)64:6<1097::AID-APP9>3.0.CO
  • [3] 2-G
  • [4] Electric properties of conducting composite from poly(ethylene oxide) and poly(ethylene oxide)-grafted carbon black in solvent vapor
    Chen, JH
    Tsubokawa, N
    [J]. POLYMER JOURNAL, 2000, 32 (09) : 729 - 736
  • [5] Vapor response properties of conducting composites prepared from crystalline oligomer-grafted carbon black
    Chen, JH
    Tsubokawa, N
    Maekawa, Y
    Yoshida, M
    [J]. CARBON, 2002, 40 (09) : 1602 - 1605
  • [6] Novel vapor sensor from polymer-grafted carbon black:: effects of heat-treatment and γ-ray radiation-treatment on the response of sensor material in cyclohexane vapor
    Chen, JH
    Iwata, H
    Tsubokawa, N
    Maekawa, Y
    Yoshida, M
    [J]. POLYMER, 2002, 43 (08) : 2201 - 2206
  • [7] A novel gas sensor from polymer-grarfted carbon black: Effects of polymer, crystalline organic compound, and carbon black on electric response to tetrahydrofuran vapor
    Chen, JH
    Tsubokawa, N
    [J]. JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, 2001, 38 (04): : 383 - 398
  • [8] Trends in odor intensity for human and electronic noses: Relative roles of odorant vapor pressure vs molecularly specific odorant binding
    Doleman, BJ
    Severin, EJ
    Lewis, NS
    [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1998, 95 (10) : 5442 - 5447
  • [9] Quantitative study of the resolving power of arrays of carbon black-polymer composites in various vapor-sensing tasks
    Doleman, BJ
    Lonergan, MC
    Severin, EJ
    Vaid, TP
    Lewis, NS
    [J]. ANALYTICAL CHEMISTRY, 1998, 70 (19) : 4177 - 4190
  • [10] Carbon black filled poly(2-ethylhexyl methacrylate) as a candidate for gas sensing material
    Dong, XM
    Fu, RW
    Zhang, MQ
    Zhang, B
    Rong, MZ
    [J]. JOURNAL OF MATERIALS SCIENCE LETTERS, 2003, 22 (15) : 1057 - 1059
123