Synthesis, Polymerization, and Copolymerization of Polyorganosiloxanes Containing Methacrylate Groups. II. Investigation of Polymerization and Copolymerization by Means of IR Spectra

摘要

By comparing the ratios of the optical densities of absorption bands in the IR spectra of methacrylate polysiloxanes, the percentages of double bonds involved in polymerization and copolymerization reactions were determined. It is shown that with increase of the distance between linkages containing methacrylate groups, the number of reacted double bonds increases in a polymerization. Copolymerization with styrene in all the investigated cases led to practically complete reaction of the double bonds. The use of the indicated ratio of optical densities gives the possibility of determining the number of linkages in a polysiloxane chain containing methacrylate substituents. (Author)