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A Comparison in Radiative Degradation of Acrylamide Polymers

B. Sanjeeva Rao, J. Muralidhar, R. Jeevan Kumar, J. Shanti, P. Naveen Babu and V. Sridhar

Radiative degradation of polyacrylamide (PAAm) and polymethacrylamide (PMAm) has been compared by spectroscopic techniques. ESR spectrum of gamma irradiated PAAm is a triplet, while irradiated PMAm has shown more than three hyperfine lines. The hyperfine (hf) splittings for PAAm are in the order of 25 G; while hf splittings of PMAm are less than 25 G. The reasons for the variation in number of hf lines and hf splittings is explained. Fourier transform infrared spectra of unirradiated and irradiated PAAm were recorded to ascertain changes induced by gamma irradiation.