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ESR studies on collagen irradiated with protons

Authors
Journal
Polymer Degradation and Stability
0141-3910
Publisher
Elsevier
Publication Date
Volume
80
Issue
1
Identifiers
DOI: 10.1016/s0141-3910(02)00381-6
Keywords
  • Collagen
  • Irradiation
  • Electron Spin Resonance
  • Radicals
  • Thermo-Oxidative Degradation

Abstract

Abstract Electron spin resonance investigations on collagen irradiated with protons are reported. The resonance spectra were assigned to a convolution of lines due to ∼CH 2–CH 2 residues and peroxy radicals. Raising the temperature of the sample (in air), the concentration of ∼CH 2–CH 2 residues decreases while, the concentration of peroxy radicals increases due to the denaturation induced enhancement of the oxidation process. An increase in the apparent intensity of the recorded spectrum has been observed around 100 °C and ascribed to the release of adsorbed water molecules.

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