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Jean Pascal Eloundou Ohandja Ayina Hippolyte Ntede Nga Jean Franois Gerard Jean Pierre Pascault Gisle Boiteux Grard Seytre 《Journal of Polymer Science.Polymer Physics》1998,36(16):2911-2921
Three reactive epoxy–amine systems based on diglycidyl ether of bisphenol A (DGEBA) with 4,4′-diaminodiphenylsulfone (DDS), 4,4′-methylenebis [3-chloro 2,6-diethylaniline] (MCDEA), and 4,4′-methylenebis [2,6-diethylaniline] (MDEA), were studied during isothermal curings at 140 and 160°C. The simultaneous kinetic and dielectric studies allow to express conductivity, σ, in terms of conversion, x, and of glass transition temperature, Tg. The conductivity, σ0, of the initial monomer mixture and, σ∞ of the fully cured network are measured. It is found that:
- The glass transition temperature, Tg, versus conversion, x, curves follows the equation of Di Benedetto modified by Pascault and Williams
- There exists a linear relation between log σ/log σ0 and Tg.
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