Nonlinear Dielectric Effect of PBLG in Nonpolar Medium

  • R. Ooms
  • L. Hellemans


Measurements of the nonlinear dielectric effect in solutions of helical PBLG in benzene and in trans-dichloroethylene are reported. Molecular weights vary from 30000 to 150000. The observations extend over the frequency range of 50 kHz to 50 MHz. The dependence of the effects on the field strength up to nearly complete saturation yields values of the effective dipole moment and the anisotropy of polarizability. The moment reveals various types of aggregation, the ansiotropy is linear with molecular weight. The variation of the field-induced changes of permittivity and loss tangent with frequency are discussed in terms of orientational relaxation of the permanent moment.


Field Strength Loss Tangent Dielectric Parameter Complete Saturation Increase Field Strength 
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Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • R. Ooms
    • 1
  • L. Hellemans
    • 1
  1. 1.Department of ChemistryUniversity of LeuvenHeverleeBelgium

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