Properties of epoxy-amine networks containing nanostructured ether-crosslinked domains

► The epoxy-amine networks with nanostructured ether-crosslinked domains (NECDs) was obtained. ► The morphology of the networks dispersed with 10-30-nm-sized NECDs was investigated by AFM. ► The molecular-level cavity in the matrix was inferred by a molecular-size simulation. ► The fracture toughness of the networks were reinforced up to 1.35 times that of neat epoxy. ► The networks were more thermostable than the neat epoxy because of higher cross-linking.