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Influence of polyaniline deposited on Mg towards sensitivity to LPG and CO2

Norhassimah, Hassim (2009) Influence of polyaniline deposited on Mg towards sensitivity to LPG and CO2. Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang.

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Abstract

Gas sensors are primarily used in the gas and oil industry and have a very commercial value due to its higher sensitivity properties in detecting minor leakage. As the sensors heterojunction are composed of combination metal oxide and organic polymer, the use of sensor would expect upgrade in term of their sensitivity, selectivity and stability. Two methods used for heterojunction fabrication are chemical bath deposition and electrodeposition. The sensors sample are tested based on I-V characteristic would inevitably inflict low current values. In this experimental work, MgO was employed due to its high conductivity and lower operating cost while polyaniline was used due to its high mechanical strength. Two different gases were used, which are LPG and CO2 respectively. Preliminary results showed that the sensor sample was successfully giving the conductivity effect. Further studies also revealed that the response time of sensor was mainly influenced by the different concentration of gases used. The higher gas response for LPG is 45% while for CO2 is 55%. Low concentration of the gases can be improved in future study by carrying out the larger scale of sensing chamber.

Item Type: Undergraduates Project Papers
Additional Information: Project paper (Bachelor of Chemical Engineering (Gas Technology)) -- Universiti Malaysia Pahang - 2009
Uncontrolled Keywords: Gas detectors Liquefied petroleum gas
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Rosfadilla Mohamad Zainun
Date Deposited: 28 Sep 2010 08:02
Last Modified: 03 Mar 2015 07:47
URI: http://umpir.ump.edu.my/id/eprint/892
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