Gas and water transport properties of epoxy-amine networks: Influence of crosslink density

Autor:	M. Escoubes, Catherine Damian, Eliane Espuche
Rok vydání:	2001
Předmět:	Water transport Polymers and Plastics Chemistry Diffusion Thermodynamics General Chemistry Epoxy Thermal diffusivity Surfaces Coatings and Films Epoxy amine visual_art Polymer chemistry Materials Chemistry visual_art.visual_art_medium Polar Gaseous diffusion Solubility
Zdroj:	Journal of Applied Polymer Science. 80:2058-2066
ISSN:	1097-4628 0021-8995
DOI:	10.1002/app.1305
Popis:	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
Databáze:	OpenAIRE
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