Influence of functional group on the electrical transport properties of polyvinyl alcohol grafted multiwall carbon nanotube composite thick film

2018 ◽  
Vol 123 (14) ◽  
pp. 145105 ◽  
Author(s):  
Amit Kumar Das ◽  
Reuben Dharmana ◽  
Ayan Mukherjee ◽  
Koumei Baba ◽  
Ruriko Hatada ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Polyvinyl Alcohol ◽  
Transport Properties ◽  
Thick Film ◽  
Electrical Transport ◽  
Functional Group ◽  
Multiwall Carbon Nanotube ◽  
Electrical Transport Properties ◽  
Carbon Nanotube Composite ◽  
Multiwall Carbon

The Humidity Sensitive Behavior of Poly(Ethyleneimine)/Multiwall Carbon Nanotube Composite Films

2012 ◽  
Vol 531-532 ◽  
pp. 588-591
Author(s):  
Tao Zhu ◽  
Guang Zhong Xie ◽  
Ya Dong Jiang ◽  
Jian Liao ◽  
Hui Ling Tai
Keyword(s):  
Carbon Nanotube ◽  
Relative Humidity ◽  
Composite Films ◽  
Multiwall Carbon Nanotube ◽  
Sensing Material ◽  
Nanotube Composites ◽  
Interdigitated Microelectrode ◽  
Carbon Nanotube Composite ◽  
Multiwall Carbon ◽  
Sensitive Behavior

In this paper, a novel humidity sensor based on polymer-carbon nanotube composites was prepared and characterized. Two different methods were adopted to fabricate the humidity-sensing film for these sensors. The surface of the films was observed by a scanning electron microscope (SEM). The sensing material made up of poly(ethyleneimine) and multiwall carbon nanotube was sprayed on the interdigitated microelectrode pairs(IDTs). The resistance between the two electrodes was measured at different relative humidity levels at 19°C. The data shows that the resistance increases with the rise of the relative humidity over the range of 5-90% RH and that, the resistance increases almost linearly in the range of 5-71% RH. The response of the sensors to NO2 and NH3 were also examined, and the results reveal that the sensor is not sensitive to both of them.

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