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2 articles for “hyperfine interactions”

• Published Subscription 24 Sep 2017

  A Study of Hyperfine Interactions of Peroxy Radicals in Irradiated PE Copolymer at Low Temperatures

  By A. Raju, S. Ramesh, B. Sanjeeva Rao, K MADHUKAR

  Abstract: Hyperfine interactions occurring around the magnetic environment of peroxy radical are investigated by electron spin resonance (ESR) technique. For this purpose, ESR spectra are recorded in the temperature range of 77 to 300 K. ESR spectra at 77 K possess some hyperfine structure together with peroxy doublet; while at high temperatures only peroxy doublet is observed. Hyperfine parameters like g-values, peak to peak separation, spread are calculated and their temperature …

  Published in Journal of Modern Chemistry & Chemical Technology · Vol. 8, Issue 2, 2017 · pp. 13–19 Read article →

• Published Subscription 2 Jul 2018

  COMPOSITION, RADIATION DOSE AND TEMPERATURE DEPENDENT DEGRADATION STUDIES OF POLYAMIDE 6 HOMOPOLYMER AND COPOLYMERS

  By B. Sanjeeva Rao, A RAJU, RAVINDER A, K MADHUKAR

  Abstract: Composition radiation dose temperature dependency on free radicals generated in PA6, PA6/ PA12 copolymer, has been investigated by electron spin resonance (ESR) and FTIR techniques. ESR spectra of -irradiated PA6 has shown complex shaped and number of hyperfine lines is observed to be in between 6-10. This complex spectrum is assigned to macro-radicals of the type ~CH2CHCH2~, which in principle has to give a ten line ESR spectrum. However, due …

  Published in Journal of Catalyst & Catalysis · Vol. 5, Issue 1, 2018 · pp. 25–37 Read article →