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Evalution of Integrated Intensities of ESR Spectra observed for Irradiated Polymer-Polyethylene Terephthalate (PET)

B. Sanjeeva Rao, J. Saptagiri Prasad, G. Rama Rao, N. Sreenivasa Rao, A. Raju and V. Sridhar

Electron spin resonance (ESR) spectra of irradiated poly (ethylene terephalate) (PET) have been recorded to study radiation induced changes. The ESR spectra have shown complicated structure caused by formation of various types of free radical species formed on radiation of polymer. Free radical concentration under different conditions has been evaluated by theoretical methods. Plots have been drawn for free radical concentration against temperature. The graph indicates complex decay of free radical kinetics.