Molecular motion in the glassy state. The effect of temperature and pressure on the dielectric ? relaxation of polyvinyl chloride

Abstract

The dielectric β relaxation of polyvinyl chloride has been studied in the ranges of temperature, pressure and frequency, 296 to 353 K, 1 × 10⁵ to 3 × 10⁸ N m^–2 and 1 to 10⁵ Hz. Detailed results are discussed in terms of current concepts of the α, β and (αβ) relaxations which occur in amorphous polymers and in small molecule glass forming systems.