Abstract
Abstract Several diglycidyl ether of bisphenol A epoxy systems cured by isophorone diamine with a monoamine, trimethylcyclohexylamine, used as chain extender were studied by density, dilatometry and viscoelasticity measurements. The crosslink density controls the free volume fraction at T g , the coefficient of cubical expansion in the rubbery state and the extrapolated volume of the liquid at 0K. The glassy state characteristics, essentially the packing density, are practically independent of the crosslink density, which could only influence the volume component linked to beta motions.
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