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<strong>Effect of temperature on dielectric properties of polyvinylpyrrolidone/ polyacrylamide blend films at microwave frequency</strong>

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Title Statement <strong>Effect of temperature on dielectric properties of polyvinylpyrrolidone/ polyacrylamide blend films at microwave frequency</strong>
 
Added Entry - Uncontrolled Name RAWAT, ANAND ; Department of Physics M S J GOVT. PG COLLEGE Bharatpur-321001
SINGH, PARAM JEET; Department of Physics M S J GOVT. PG COLLEGE Bharatpur-321001
UGC, BHOPAL
 
Uncontrolled Index Term Microwave; Dielectric studies
Dielectric constant; Conductivity; Dielectric loss; Loss tangent; Relaxation time; Extinction coefficient Polymer blend; Activation energy; Refractive index
 
Summary, etc. <span style="&quot;font-size: 11.0pt;" lang="&quot;EN-GB&quot;">In this paper, dielectric constant (ε<sub>r</sub>), dielectric loss (ε<sub>i</sub>), loss tangent (tanδ), relaxation time (τ), ac conductivity (σ<sub>ac</sub>), extinction coefficient (<em>K</em>) and refractive index (η) of polyvinylpyrrolidone (PVP), polyacrylamide (PAM) and their blend films have been studied in the temperature range 293-393 K at 9.01 GHz microwave frequency. The temperature and frequency dependent σ<sub>ac</sub> of film samples is calculated using the dielectric parameters. The variation of ε<sub>i</sub>, tanδ, <em>K</em>, σ<sub>ac</sub>, η and τ showed a decreasing trend with increasing temperature. It is also observed that the temperature dependency of ε<sub>r</sub> is insignificant at this frequency but its value for the film samples increases with the increasing concentration of PVP in the blend. The DSC measurements show miscible behaviour of PVP/PAM blends.</span>
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2016-03-22 10:35:25
 
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http://op.niscair.res.in/index.php/IJPAP/article/view/4828
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 54, ##issue.no## 3 (2016): Indian Journal of Pure & Applied Physics
 
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