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Permittivity of Polyhydroxyalkanoate Biopolymer Solutions

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Abstract

The temperature and frequency dependences of the complex permittivity of polyhydroxyalkanoate biopolymer solutions in chloroform are investigated. Complex dependences of dielectric increments and high-frequency conductivity of copolymer solutions of homogeneous β-hydroxybutyric and β-hydroxyvaleric acid polymers with concentrations of 7–62 mol. % is established. It is demonstrated that the dielectric increment of the solution decreases with increasing weight-average relative molecular mass. No dispersion of real permittivity components has been detected in the examined frequency range 102–105 Hz. The low-frequency increase in the loss tangent according to a hyperbolic law is connected with the solution conductivity. The effective dipole moments of macromolecules are determined and their nonmonotonic dependence on the poly (β-hydroxyvalerate) concentration is established.

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Authors and Affiliations

  1. L. V. Kirenskii Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences, Russia

    B. A. Belyaev, T. G. Volova, N. A. Drokin & V. N. Shepov

Authors
  1. B. A. Belyaev
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  2. T. G. Volova
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  3. N. A. Drokin
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  4. V. N. Shepov
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Belyaev, B.A., Volova, T.G., Drokin, N.A. et al. Permittivity of Polyhydroxyalkanoate Biopolymer Solutions. Russian Physics Journal 45, 394–399 (2002). https://doi.org/10.1023/A:1020587209310

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  • DOI: https://doi.org/10.1023/A:1020587209310

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