Water uptake of epoxy–clay nanocomposites: Model development

Models for the water uptake behavior of epoxy–clay nanocomposites are presented. Diffusion models for epoxy including Fick’s law, the Langmuir model of diffusion, diffusion with time-varying diffusivity, and diffusion models for composites are reviewed. Models for the diffusivities of exfoliated and intercalated nanocomposites are developed.