HEAT OF POLYMERIZATION OF PHENYL GLYCIDYL ETHER AND OF AN EPOXY RESIN

摘要

A differential thermal analysis apparatus was constructed for the measurement of heats of polymerization.nWith this apparatus the mean value for three determinations of the heat of polymerization of epoxy resins, ca 22 to 26 kcal per mole could be measured to within a standard error of 0. 37 kcal per mole.nThe heats of polymerization of phenyl glycidyl ether and of an epoxy resin were measured with ten and nine different curing agents, respectively.nThe phenyl glycidyl ether was polymerized in the presence of an equivalent amount of ethylene glycol, the primary alcohol groups of which act as cocatalysts for the polymerization. Although the presence of the glycol is not likely to influence the value of the measured heats, further experiments are being performed to confirm this expectation.