ESR Evidence of Growing Unsaturation in -Irradiated Poly (Vinyl Alcohol)

Authors

  • S. Kalahasti Arts & Science College, Hanamkonda, Warangal (A.P.), India
  • B. Sanjeeva Rao Govt. Degree College, Mulugu, Warangal (A.P.), India
  • A. Raju Chaitanya Postgraduate College, Hanamkonda, Warangal (A.P.), India
  • Ch. Srinivas S.R. College, Hanamkonda, Warangal (A.P.), India

Abstract

Abstract

Free radicals present in gamma irradiated PVAL subjected to different degrees oxidation are identified using ESR spectroscopy. The observed ESR spectra are  analysed by computer simulations. Gamma irradiated PVAL immediately after irradiation possess ~CH2–CH–CH2~ type free radicals (I). Upon oxidation the free radicals transform to ~CH2–CH=CH–CH2~ (II) highly oxidized PVAL consist ~CH2–C=O (III) type free radicals. The results suggest that radical (I) is precursor to radicals (II) and (III). Oxidation induced unsaturation in Gamma irradiated PVAL.

 

Keywords: poly (vinyl alcohol), gamma irradiate degree of oxidation, ESR spectra free radicals

Author Biographies

  • S. Kalahasti, Arts & Science College, Hanamkonda, Warangal (A.P.), India
    Department of Physics
  • B. Sanjeeva Rao, Govt. Degree College, Mulugu, Warangal (A.P.), India
    Department of Physics
  • A. Raju, Chaitanya Postgraduate College, Hanamkonda, Warangal (A.P.), India
    Department of Physics
  • Ch. Srinivas, S.R. College, Hanamkonda, Warangal (A.P.), India
    Department of Physics

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Published

2019-04-08

Issue

Vol. 1 No. 3 (2013)

Section

Articles

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