USE OF WATER AS AN INTERNAL STANDARD IN THE DIRECT MONITORING OF EMULSION POLYMERIZATION BY FIBEROPTIC RAMAN-SPECTROSCOPY

Direct analysis of the organic phase of an emulsion polymerization is described. Quantification uses the bending mode peak of water, which m akes up the bulk of the reaction medium, as an internal standard. Alth ough demonstrated with methyl methacrylate, the process is generally a pplicable to emulsion polymerizations. It does not require the introdu ction of an extraneous internal standard component into the reaction m ixture.