title: Low-frequency dielectric relaxation in rubber.
abstract: A rubber sample is investigated by dielectric spectroscopy in the frequency range from 10(-2)<or=nu<or=10(7) Hz. Measurements are performed under both isothermal (at ambient pressure) and isobaric conditions. The spectral shape of the loss peaks is symmetric and temperature and pressure independent. Hence the temperature-pressure-frequency superposition principle is fulfilled in a cross-linked rubber sample. The Vogel-Fulcher-Tammann temperature law and its pressure counterpart well describe the respective temperature and pressure dependences of relaxation times. In addition we determined the activation volume from isothermal relaxation data.
authors.affiliation: Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland.
authors.forename: P
authors.initials: P
authors.lastname: Janik
authors.forename: M
authors.initials: M
authors.lastname: Paluch
authors.forename: J
authors.initials: J
authors.lastname: Ziolo
authors.forename: W
authors.initials: W
authors.lastname: Sulkowski
authors.forename: L
authors.initials: L
authors.lastname: Nikiel