ESR spectrum

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• Published Subscription 17 Dec 2019

  Dosimetric Aspects of Poly(ethylene- g - maleic anhydride)

  By B. Sanjeeva Rao, B. Chandramouli, B. Sabitha

  Abstract: Electron spin resonance (ESR) spectroscopy is considered to be finger print technique to identify chemical structures of irradiated polymers. To prove this, ESR spectra of unirradiated and irradiated maleic anhydride grafted poly ethylene (MANPE)are recorded under different conditions. The ESR spectra show multiplehyperfine lines with latent structure corresponding to macro radicals . Radiation dose dependency on chemical structure of MANPE has been investigated by recording ESR spectra at various radiation …

  Published in Journal of Polymer & Composites · Vol. 7, Issue 3, 2019 · pp. 20–23 Read article →

• Published Subscription 8 Feb 2018

  Radiation Effects in Acrylonitrile (AN) Ethyl Methacrylate Copolymer by Spectroscopic and Thermal Methods

  By B. Sanjeeva Rao, D. Suresh, S. Kalahasthi, V. Sridhar

  Abstract: Gamma irradiation effects in acrylonitrile (AN) ethyl methacrylate (EMA) (AE) copolymer have been investigated by electron spin resonance (ESR), Fourier transform infrared (FTIR) and differential scanning calorimetric (DSC) techniques. Temperature and radiation dose dependent effects have been investigated by recording ESR spectra under different conditions. Computer simulation techniques are used to analyze ESR spectra to identify of free radical produced on irradiation of copolymer. As such, ESR spectrum of irradiated …

  Published in Journal of Polymer & Composites · Vol. 5, Issue 3, 2017 · pp. 22–29 Read article →