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|Title:||Structural and thermal characterization of metal halides doped polypyrrole|
Saxena, N S
Sharma, T P
|Keywords:||Effective thermal conductivity;Effective thermal diffusivity;Metal halide|
|Abstract:||Polypyrrole and its metal halide composites have been synthesized by chemical oxidation polymerization technique with ammonium peroxisulphate (oxidant) in aqueous hydrochloric acid medium. structural characterization of polypyrrole samples S1 (100% Co), S2 (25%Ni -75%Co), S3 (50%Ni -50%Co), S4 (75%Ni - 25%Co) and S5 (100%Ni) has been made by XRD and FTIR spectroscopy. Thermal transport properties such as effective thermal conductivity (λe) and effective thermal diffusivity (χe) of these samples have been measured simultaneously at room temperature and normal pressure using transient plane source (TPS) technique. The values of effective thermal conductivity and effective thermal diffusivity are found higher in all the above-mentioned samples except sample S3 (50%Ni-50%Co). This result can be explained on the basis of bonding of cobalt and nickel with polypyrrole matrix during their polymerization.|
|Appears in Collections:||IJPAP Vol.46(06) [June 2008]|
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