Analysis of gas sensing behaviors of carbon black/waterborne polyurethane composites in low concentration organic vapors

2007 ◽  
Vol 42 (12) ◽  
pp. 4575-4580 ◽  
Author(s):  
Bin Zhao ◽  
Ruo Wen Fu ◽  
Ming Qiu Zhang ◽  
Bin Zhang ◽  
Wei Zeng ◽  
...  
Keyword(s):  
Carbon Black ◽  
Gas Sensing ◽  
Waterborne Polyurethane ◽  
Organic Vapors ◽  
Low Concentration ◽  
Polyurethane Composites

Conductive Polymer Composites Serving as Gas Sensors

2007 ◽  
Vol 334-335 ◽  
pp. 561-564 ◽  
Author(s):  
Ming Qiu Zhang ◽  
Min Zhi Rong ◽  
Shi Guo Chen
Keyword(s):  
Carbon Black ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Conductive Polymer ◽  
Waterborne Polyurethane ◽  
Polar Solvents ◽  
Conductive Composites ◽  
Conductive Polymer Composites ◽  
The Matrix ◽  
Solvent Molecules

The present work synthesized conductive composites consisting of waterborne polyurethane (WPU) and carbon black (CB). Besides the low percolation threshold (0.70.95wt%), 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.

Gas sensor arrays based on polymer-carbon black to detect organic vapors at low concentration

2006 ◽  
Vol 113 (2) ◽  
pp. 887-891 ◽  
Author(s):  
Haifen Xie ◽  
Qiudong Yang ◽  
Xiaoxiang Sun ◽  
Juanjuan Yang ◽  
Yiping Huang
Keyword(s):  
Carbon Black ◽  
Gas Sensor ◽  
Sensor Arrays ◽  
Organic Vapors ◽  
Low Concentration ◽  
Gas Sensor Arrays

Gas sensitivity of carbon black/waterborne polyurethane composites

Carbon ◽  
2004 ◽  
Vol 42 (3) ◽  
pp. 645-651 ◽  
Author(s):  
Shi Guo Chen ◽  
Ji Wen Hu ◽  
Ming Qiu Zhang ◽  
Ming Wei Li ◽  
Min Zhi Rong
Keyword(s):  
Carbon Black ◽  
Waterborne Polyurethane ◽  
Gas Sensitivity ◽  
Polyurethane Composites

scholarly journals Effect of Soft Segments of Waterborne Polyurethane on Organic Vapor Sensitivity of Carbon Black Filled Waterborne Polyurethane Composites

2006 ◽  
Vol 38 (8) ◽  
pp. 799-806 ◽  
Author(s):  
Bin Zhao ◽  
Ruo Wen Fu ◽  
Ming Qiu Zhang ◽  
Hong Yang ◽  
Min Zhi Rong ◽  
...  
Keyword(s):  
Carbon Black ◽  
Waterborne Polyurethane ◽  
Organic Vapor ◽  
Soft Segments ◽  
Polyurethane Composites

Nano-porous UIO-66-NH2/TiO2 Bragg reflector for low concentration HCl gas sensing

2021 ◽  
pp. 1-1
Author(s):  
Kou Zhan ◽  
Zhaolong Wang ◽  
Yabin Zhu ◽  
Jun Yan ◽  
Yunlin Chen
Keyword(s):  
Gas Sensing ◽  
Bragg Reflector ◽  
Low Concentration ◽  
Hcl Gas

scholarly journals BTEX detection with composites of ethylenevinyl acetate and nanostructured carbon

2017 ◽  
Vol 8 ◽  
pp. 982-988 ◽  
Author(s):  
Santa Stepina ◽  
Astrida Berzina ◽  
Gita Sakale ◽  
Maris Knite
Keyword(s):  
Atomic Force Microscopy ◽  
Carbon Black ◽  
Benzene Ring ◽  
Gas Sensing ◽  
Nanostructured Carbon ◽  
Force Microscopy ◽  
Atomic Force ◽  
Vapour Concentration ◽  
Benzene Toluene ◽  
Acetate Copolymer

By using a solvent-based method composites of ethylenevinyl acetate copolymer and carbon black (EVA–CB) were synthesized for sensing BTEX (benzene, toluene, ethylbenzene and xylene) vapours. The composites were characterized using atomic force microscopy (AFM) in an electroconductive mode. Gas sensing results show that EVA-CB can reproducibly detect BTEX and that the response increases linearly with vapour concentration. Compared to gas-sensing measurements of gasoline vapours, the responses with toluene and ethylbenzene are different and can be explained by varying side chains of the benzene ring.

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