Abstract：In the present paper, with polyoxyethylene(10) octylphenol ether and hydrogenous silicon oil used as raw materials, and stannous octoate used as catalyst, polyoxyethylene(10) octylphenolether-hydrogenous silicon oil polymer was synthesized in toluene solvent. Residual hydrogenous silicon oil in the polymer was determined by IR. There is a characteristic peak at 2 167 cm-1 for Si—H bond in hydrogenous silicon oil. Using span-60 as internal standard, depending Lambert-Beer law and some calculation process, the linear relation between the absorbance ratio(y) and the mass ratio(x) of sample was obtained. The linear regression equation is y=2.07 2x+0.296 3 with a correlation coefficient(r2) of 0.998 9. The experimental results of the precisions and recoveries are satisfactory. An IR method to determine the content of hydrogenous silicon oil in polyether was established. The method is very necessary for confirming the reaction extent and controlling product quality and adjusting polyether silicon oil characters. The best process parameter was chosen in experiments. The polyether has good charactesistic for extracting alcohols and benzene homologues with bright future of application.
