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Gas and water transport properties of epoxy–amine networks: Influence of crosslink density
Author(s) -
Damian Catherine,
Escoubes Marielle,
Espuche Eliane
Publication year - 2001
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1305
Subject(s) - solubility , epoxy , thermal diffusivity , diffusion , amine gas treating , materials science , polymer chemistry , thermodynamics , polar , chemistry , organic chemistry , composite material , physics , astronomy
The gas and water transport properties were studied on seven epoxy–amine networks that differ by their di/mono epoxy composition and their cure cycle. The characteristic parameters of transport M ∞ and D were determined in each case, and they show that the solubility and diffusion coefficients are influenced by their composition. The solubility increases with the extend of cure and with the decrease of dangling chains, and in both cases the evolution of the diffusivity is inverse. The variations of the solubility and diffusivity have been discussed as a function of two parameters: polar groups and unrelaxed holes of the glassy networks. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 2058–2066, 2001