ANALYSIS OF SILOXANE PYROLYSIS PRODUCTS BY CRYO-GC FT-IR AND GC/MS/

On line measurements of infrared and mass spectra of siloxane pyrolysi s products separated by gas chromatography are described. The FT-IR ab sorbance spectra have been recorded from the eluates trapped as small spots on a moving window held at 77 K. Three of the main compounds sep arated were selected for FT-IR identification performed by comparing t he spectra with GC/MS data and by spectral searching using a library o f compounds measured under the same conditions.