Thermal Diffusivity and Electrical Conductivity Studies of Polyaniline Based Materials and Selected Ceramics

Liew, Josephine Ying Chyi (2003) Thermal Diffusivity and Electrical Conductivity Studies of Polyaniline Based Materials and Selected Ceramics. Masters thesis, Universiti Putra Malaysia.

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Abstract

In this work, the photoflash and four-point probe techniques were respectively applied for thermal diffusivity and electrical conductivity measurement on polyaniline, polyaniline blends, polyaniline composite and ceramic at room temperature. In the photoflash technique, the signal was initially generated by a high intensity camera flash as an excitation source. A fast response K -type thermocouple was used as a detector to monitor the temperature at the rear surface of the sample. The photoflash signal was captured as a function of time and the half rise time; t₀.₅ of each sample was then analyzed to determine the thermal diffusivity. The photoflash setup was first calibrated with the sample of known thermal diffusivity. The results indicate that the thermal diffusivity of the calibration sample correlated well with the results from literature.

Item Type:Thesis (Masters)
Subject:Thermal diffusivity
Subject:Thermodynamics
Chairman Supervisor:Professor W. Mahmood Mat Yunus, PhD
Call Number:FSAS 2003 5
Faculty or Institute:Faculty of Environmental Studies
ID Code:9536
Deposited By: Muizzudin Kaspol
Deposited On:14 Feb 2011 07:57
Last Modified:18 May 2012 08:44

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