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Analysis of Polycrystal Acrylamide by Electron Spin Resonance and Thermo-Analytical Methods
(WILEY-BLACKWELL, 2011) Usta, Ayhan; Filiz, Ali; Birey, Mehmet; Ozmen, Ayhan
Electron spin resonance (ESR), thermogravimetry analysis (TGA), and differential thermal analysis (DTA) were performed on acrylamide (C(3)H(5)NO) polycrystal samples. The samples were irradiated at 298 K for 24, 48, 72, and 96 h using (60)Co - gamma source. ESR measurements were carried out between 120 and 450 K. The ESR signals were recorded from the samples exposed to (60)Co - gamma rays for 72 and 96 h. Between 120 and 450 K the spectra changed in a manner roughly. It was detected by means of e.s.r. spectra that unpaired electron took place due to scission of pi bond in the carbon-carbon double bonds in the substance. The produced radiation damage center on the sample was attributed to center dot CH(2)-CH-R Additionally, thermal behavior of the acrylamide samples were investigated by using TGA and DTA methods. It was observed that both irradiated and not irradiated samples decomposed at three steps. (C) 2011 Wiley Periodicals, Inc. Concepts Magn Reson Part A 38A: 102-106, 2011.