Effect of hydrostatic pressure on local polymer dynamics in poly(propylene oxide)

Liliane Bokobza, Philippe Sergot, Lucien Monnerie, F. C.De Schryver, Benny D. Freeman

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Abstract

The effect of hydrostatic pressure on the local molecular motion in bulk polymers has been studied by measuring the pressure dependence of the fluorescence lifetime of the intramolecular excimerforming probe molecule meso-2,4-di-N-carbazolylpentane dissolved in poly(propylene oxide) of molecular weights 425, 2000, and 4000. The experiments were performed at 313 K and covered a pressure range of 1–3000 bar. The experimental data are compared with the predictions of several free volume based models of polymer dynamics and with previous dipole relaxation measurements of poly(propylene oxide) dynamics.

Original languageEnglish
Pages (from-to)2566-2573
Number of pages8
JournalMacromolecules
Volume23
Issue number9
DOIs
Publication statusPublished - 1990
Externally publishedYes

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