Dependences of ionic conductivity and dielectric constant of amorphous nonpolar polymers on free volume
- Resource Type
- Conference
- Authors
- Min-Sheng Wang; Jin Weifang; Liu Ziyu
- Source
- [1991] Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials Properties and Applications of Dielectric Materials, 1991., Proceedings of the 3rd International Conference on. :77-80 vol.1 1991
- Subject
- Engineered Materials, Dielectrics and Plasmas
Conductivity
Dielectric constant
Amorphous materials
Polymers
Dielectric materials
Temperature
Equations
Conducting materials
Thermal expansion
Dielectrics and electrical insulation
- Language
For amorphous nonpolar polymers, a quantitative relation between dielectric constant and free volume was extended from the authors' (1990) previous model for liquids. An expression of ionic conductivity in terms of free volume was developed based on the Nernst-Einstein equation. Furthermore, the correlation between ionic conductivity and dielectric constant was derived. Experimental results on polystyrene agree well with the theoretical models over a wide range of temperature (-180 degrees C to +140 degrees C).ETX