• Jagdish Shukla

      Articles written in Pramana – Journal of Physics

    • Relaxation intensity in some polyacrylates

      Manisha Gupta Sangita Madhuri Mathur Jagdish Shukla

      More Details Abstract Fulltext PDF

      Empirical formula suggested by Kita and Koizumi for evaluation of relaxation intensity in a limited range of frequency around the relaxation frequency for the Cole-Cole type distribution has been tested for poly butyl acrylate (PBA), Poly butyl methacrylate (PBMA) and poly isobutyl methacrylate (PiBMA).

      The relaxation intensity Δε is expressed in terms ofε″M, the dielectric loss maxima andW, the frequency separation for half, two thirds or three quarters ofε″M, in the form Δε=ε″M/[(C1/W)+C2+C3W], where the numerical constantsC1,C2,C3 are given for the respective type of relaxation.

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