Dielectric Properties of Polymers Proceedings of a Symposium held on March 29–30, 1971, in connection with the 161st National Meeting of the American Chemical Society in Los Angeles, California, March 28 – April 2, 1971

The study of the electrical properties of polymers constitutes a substantial fraction of the total research interest in macro­ molecular behavior. Because of the increasing attention now being paid to theoretical and experimental aspects of the phenomena encountered, a symposium focusing particularly on dielectric behavior was held at the l6lst National Meeting of the American Chemical Society in Los Angeles, California, March, 1971. The authoritative papers in this volume were all presented at this symposium, which was sponsored by the Polymer Division of the American Chemical Society. An obvious advantage of such a collection is that it keep~ together closely related material which would otherwise tend to be dispersed amongst different journals; a further factor of which most authors represented here have taken advantage is that it gives an opportunity to present research in less attenuated form than is now normally possible in journals. I wish to thank all the authors for their uniformly excellent contributions and for their cooperation in the publication of this volume. Thanks are also due to Dr. S. Matsuoka for chairing one of the sessions at the symposium. September, 1971 Frank E. Karasz v LIST OF CONTRIBUTORS B. Baysal, Department of Chemistry, Dartmouth College, Hanover, New Hampshire Richard H. Boyd, Department of Chemical Engineering and Division of Materials Science and Engineering, University of Utah, Salt Lake City, Utah M. G. Broadhurst, Institute for Materials Research, National Bureau of Standards, Washington, D. C.

Spatial Correlations in Copolymers from Dielectric Measurements.- Multiple Dielectric Relaxation Processes in Amorphous Polymers as a Function of Frequency, Temperature and Applied Pressure.- A Linearized Chain Model for Dielectric Loss in Polymers.- Computations Based on a Chain Model for Dielectric Loss.- Internal Relaxation in Short Chains Bearing Terminal Polar Groups.- Dielectric Properties of Methyl Stearate-A Model Crystalline Polymer.- The Measurement of Dielectric Constant and Loss of Polymeric Solids and Melts Over a Wide Frequency Range.- Dielectric Relaxation in Segmented Polyurethanes.- Dielectric and Mechanical Relaxations in Ethylene- Acrylic Acid and Ethylene-Methacrylic Acid Copolymers.- A Comparative Study of Dielectric Behavior of Polyethylene and Chlorinated Polyethylene,.- Molecular Relations in Substituted Polystyrenes.- The Electret Properties of a Series of Corona-Charged Substituted Polyolefins.- Effect of Morphology on the Dielectric Properties of Polystyrene-Polyethylene Oxide Block Copolymers.- Dielectric Dispersion in Dilute Solutions of Several Para-Substituted Polystyrenes.- The Influence of Impurities on the Dielectric Losses of Poly (2,6-Dimethyl-l,4-Phenylene Ether).