Effect of volume changes on segmental relaxation in siloxane polymers
Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, ISSN: 1063-651X, Vol: 68, Issue: 3, Page: 5-null
2003
- 43Citations
- 8Captures
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Metrics Details
- Citations43
- Citation Indexes43
- CrossRef43
- Captures8
- Readers8
Article Description
From dielectric relaxation and equation-of-state measurements on polymethylphenylsiloxane and polymethyltolylsiloxane, the relative contributions of volume and thermal energy to the temperature dependence of the segmental relaxation times are quantified. In both polymers, volume exerts a substantial effect, being almost as significant as thermal energy. A possible consequence of this prominent role of volume in governing the segmental dynamics is the finding that the relaxation times, measured for a series of temperature at various (fixed) pressures, can be expressed as a single function of the volume normalized by the volume at the glass transition temperature. A similar result is found for the (isothermal) relaxation times measured at various pressures. © 2003 The American Physical Society.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85035294156&origin=inward; http://dx.doi.org/10.1103/physreve.68.031802; http://www.ncbi.nlm.nih.gov/pubmed/14524793; https://link.aps.org/doi/10.1103/PhysRevE.68.031802; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevE.68.031802/fulltext; http://link.aps.org/article/10.1103/PhysRevE.68.031802
American Physical Society (APS)
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