Materials Research in Thailand - International Center for Materials ...
Materials Research in Thailand - International Center for Materials ...
Materials Research in Thailand - International Center for Materials ...
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Development of Conductive Polymer <strong>for</strong> Gas Sensor<br />
• Polymer which exhibits electrical conductivity higher than 10 -10<br />
S/cm<br />
(Agbor,, 1989).<br />
• Detect CO, SO 2 , NO X , NH 3 , H 2 S Polyanil<strong>in</strong>e<br />
Dop<strong>in</strong>g Process<br />
Insulat<strong>in</strong>g Polymer<br />
Chargers are<br />
removed or<br />
added<br />
Conduct<strong>in</strong>g Polymer<br />
H H<br />
N N N N<br />
n<br />
Protonic acid<br />
Dop<strong>in</strong>g<br />
H H H H<br />
N<br />
..<br />
N N N<br />
. + .. . +<br />
Cl -<br />
Cl -<br />
H H H<br />
N N N<br />
.. .. ..<br />
Oxidative Dop<strong>in</strong>g<br />
s = 10 -10 S/cm<br />
s >100 S/cm<br />
s = 10 -10 S/cm<br />
The Petroleum and Petrochemical College
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