Analysis of Polycrystal Acrylamide by Electron Spin Resonance and Thermo-Analytical Methods

作者：Usta Ayhan^*; Filiz Ali; Birey Mehmet; Ozmen Ayhan

来源：Concepts in Magnetic Resonance: Part A , 2011, 38A(3): 102-106.

DOI：10.1002/cmr.a.20213

• ESR spectroscopy
• TGA/DTA
• radical
• acrylamide

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.

• 出版日期2011-5