Sequencing an Aromatic Copolycarbonate by Partial Ammonolysis and FAB-MS Analysis of the Products

Fast atom bombardament mass spectrometry (FAB-MS) has been used to identify the low molecular weight compounds produces in the partial ammonolysis of an essentially alternating copolycarbonate containing resorcine and Bisphenol A (BPA) units. The FAB-MS spectra allow to identify sequences with an exactly alternating structure. Furthermore, some spurious sequences containing blocks of 2-4 consecutive BPA units are detected.