THE THERMAL-BEHAVIOR OF HIGH-MOLECULAR POLYOXYETHYLENE-UREA BINARY-MIXTURES

The thermal behaviour (from 20 to 500-degrees-C) of high-molecular pol yoxyethylene-urea mixtures which formed a molecular complex was invest igated by means of a derivatograph. Under the conditions of the invest igation, there were no indications of an interaction between the therm al decomposition products and the initial components, or of new interm ediates with a thermostabilizing effect. A linear coorelation was obta ined between the mass loss at 250-degrees-C and the urea content of th e mixture, which may be used to determine the urea content of similar mixtures.