Temperature-Dependent Changes in Gamma Irradiated Porcine Gelatin with Low Bloom (PGL) Value: an ESR Investigation

Authors

  • N. S. Rao Department of Physics, Kakatiya University, Warangal, 506 009, Telangana State, India; Present address: Department of Physics, SR & BGNR Govt. Arts and Science College(A), Khammam, 507002, Telangana State, India
  • D. Shireesh Department of Physics, Kakatiya University, Warangal, 506 009, Telangana State, India
  • S. Kalahasti Department of Physics, Kakatiya University, Warangal, 506 009, Telangana State, India
  • B. S. Rao Department of Physics, AVV Degree & PG College Warangal 506 005, Telangana State, India

DOI:

https://doi.org/10.3329/jsr.v14i2.55078

Abstract

Gamma irradiation of Gelatin brings important changes in its chemical structure, making it suitable for different applications. The irradiated Gelatin may be subjected to different thermal treatments during these applications. Therefore, temperature-dependent changes in irradiated gelatins are a point of interest. Electron spin resonance (ESR) is vital for detecting free radical processes in irradiated polymers. As such, ESR spectra of temperature-dependent porcine Gelatin with low bloom are recorded, and they are analyzed by computer simulation techniques. Component spectra under different conditions are evaluated by the magnetic parameters employed to simulate the ESR spectra. The results indicate that the spectral shape at 300 K (RT) is stable up to 350 K, and signal intensity begins to decay beyond 350 K. The signal vanished around 355 K, designated as radical decay temperature. Bloch analysis is applied to evaluate activation energy associated with free radical decay, calculated around 35 KJ/mole.

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Published

2022-05-06

How to Cite

Rao, N. S., Shireesh, D., Kalahasti, S. ., & Rao, B. S. . (2022). Temperature-Dependent Changes in Gamma Irradiated Porcine Gelatin with Low Bloom (PGL) Value: an ESR Investigation. Journal of Scientific Research, 14(2), 395–404. https://doi.org/10.3329/jsr.v14i2.55078

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Section

Section A: Physical and Mathematical Sciences