Radiation-induced processes in poly(alkylene terephthalates) and diethyl terephthalate: Evidence for formation of cyclohexadienyl-type radicalsстатья
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Аннотация:The low-temperature radiolysis of poly(butylene terephthalate), poly(ethylene terephthalate), and diethyl terephthalate was studied by electron spin resonance spectroscopy. The radiation-induced formation of radicals of the cyclohexadienyl type was observed for all the samples studied. It was shown that the radicals of the cyclohexadienyl type represented a considerable fraction of neutral radicals produced in the radiolysis of phthalates under consideration. The identification of the signals of various alkyl-type radicals is discussed. The kinetics of radical decay at room temperature was investigated. (C) 1997 Elsevier Science Ltd.