ABSTRACT
Curing and phase formation in an epoxy-amine system–diglycidyl ether of bisphenol A/cycloaliphatic diamine—were investigated by spin-probe and spin-label ESR in the presence of 0.0–17.0 vol % of oligomeric polypropyleneglycobis(toluylene-diurethanethyleneacrylate). This technique was found to be more sensitive to phase separation than light scattering. Formation of the secondary phase (just after gel formation) and kinetic inhomogeneity in starting epoxy-amine system are detected.
