• Mradula Chauhan

      Articles written in Pramana – Journal of Physics

    • Relaxation behaviour of phenol and cresols in highly viscous media

      Mradula Chauhan Mridula Gupta S K Saxena J P Shukla

      More Details Abstract Fulltext PDF

      Dielectric relaxation times (t) have been determined for phenol,o-cresol,m-cresol andp-cresol in solutions ofn-heptane+paraffin oil of varying viscosities. Since, all the four systems contain an -OH group, capable of group rotation, the dielectric absorption was further resolved using Higasi, Koga and Nakamura method in terms oft(1) andt(2). In each case the dielectric relaxation time has been found to be maximum in the neighbourhood of 75%n-heptane+25% p.o. in the mixture. On further increasing the viscosity of the medium, theT values shorten. The results obtained suggest the associative nature of the compounds investigated.

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