Determination of Epoxide and Hydroxyl Groups in Epoxide Resins by IR Spectrometry

The IR spectra of 40% acetone solutions of epoxy resins with different molecular mass were studied. A correlation was found between the intensities of some absorption bands for the determination of epoxide (920 cm-1) and hydroxyl (3450 cm-1) groups and for the estimations of the average molecular mass of the resin (1108 cm-1).