Abstract
Thermally Stimulated Depolarization Current measurements have been carried out in a temperature range between −180°C and 20°C on different Poly(Vynil Chloride) samples characterized by different molecular weights and tacticities. Dielectric relaxation times involved in the β-relaxation were obtained by the fractional polarization procedure. The distribution of the Arrhenius-like kinetic parameters deduced from the relaxation times, has been interpreted in terms of compensation laws. Two different compensation laws, which are likely associated to two kinds of thermally activated molecular motions, were obtained. This compensation behaviour does not result to be significantly affected by both tacticity and molecular weight. The two compensation laws obtained in the β-region have been compared with the compensation behaviour in the α-relaxation range of PVC previously studied. Results obtained are discussed in the frame of the correlation between β and α relaxations of Poly(Vinyl Chloride) frequently assumed in the literature.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
