Modification of Acrylonitrile-Methylacrylate Copolymer by Gamma Irradiation

Authors

  • B. Sanjeeva Rao Government Degree College, Mulugu, Warangal District, Telangana, India
  • S Kalahasthi Kakatiya University, Warangal, India
  • EV Rao Kakatiya University, Warangal, India
  • B Sabitha Vaagdevi Degree and PG College, Hanumkonda, Warangal, India

Abstract

Abstract

Radiative degradation of acrylonitrile-methylacrylate (AM) copolymer has been investigated by electron spin resonance (ESR) and infrared (IR) spectroscopy. The ESR spectrum observed for AM copolymer irradiated to a dose of 12 Mrad is a triplet with an intensity ratio of 1:3:1. The ESR spectrum is simulated by total-curve-fitting method and component spectra are generated. Magnetic parameters of component spectra are evaluated. Component triplet spectrum with magnetic parameters ni=3, mi=1 is attributed to free radicals of the type CH2-CH(COOCH3) (I) and component singlet with parameters ni=mi=1 is attributed to ~CH2C(HCN)=C=CH(COOCH3) (II). Based on the spectral data a mechanism for radiative degradation is proposed.

 

Keywords: Gamma irradiation, electron spin resonance, ESR simulation, FTIR, degradation

Cite this Article

Sanjeeva Rao B, Kalahasthi S, Rao EV et al. Modification of acrylonitrile-methylacrylate copolymer by gamma irradiation. Journal of Polymer & Composites. 2015; 3(3): 16–19p.


Author Biographies

  • B. Sanjeeva Rao, Government Degree College, Mulugu, Warangal District, Telangana, India
    Department of Physics
  • S Kalahasthi, Kakatiya University, Warangal, India
    Department of Physics
  • EV Rao, Kakatiya University, Warangal, India
    Department of Physics
  • B Sabitha, Vaagdevi Degree and PG College, Hanumkonda, Warangal, India
    Department of Chemistry

Downloads

Published

2019-04-04

Issue

Vol. 3 No. 3 (2015)

Section

Articles

License

Declaration and Copyright Transfer Form

(to be completed by authors)

I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.

  • I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.
  • I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).
  • I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.
  •  I/We also agree to the authorship of the article in the following order:

Author’s name                                    

 

1. ________________

2. ________________

3. ________________

4. ________________

 

We  Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal.