Real-time dielectric studies of polymerizing systems
- 1 January 1999
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 11 (10A) , A57-A74
- https://doi.org/10.1088/0953-8984/11/10a/004
Abstract
The use of real-time dielectric relaxation spectroscopy (DRS) for monitoring changes in molecular mobility during reaction for thermosetting systems is described together with phenomenological and molecular theories of the time-dependent relaxation functions that are involved. Reduced molecular mobility normally leads to the diffusion control of a reaction and ultimately to glass formation at the polymerization temperature . We present new DRS results for a boroxine/epoxide system that show glass formation below a `floor temperature' and very different behaviour above , when the dielectric properties become independent of time and an elastomer is formed.Keywords
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