Electron Spin Resonance Spectroscopy in Medicine by Ashutosh Kumar Shukla

Author:Ashutosh Kumar Shukla
Language: eng
Format: epub, pdf
ISBN: 9789811322303
Publisher: Springer Singapore

For the photo-cured sample, the amount of paramagnetic species detected in EPR spectroscopy grows up during the irradiation time and decreases after stopping irradiation (Fig. 6.15). The concentration of FRs rapidly increases up to a maximum value depending on the concentration of initiators, concentration of monomers, and other factors [1]. When irradiation is terminated, the concentration of FRs decreases exponentially due to the consumption of FRs when converting monomers to polymers [1]. The polymerization that occurs after irradiation is slow because the polymeric chain has low mobility in the matrix after irradiation. Figure 6.16 represents the proposed model.

Fig. 6.15Intensity of the EPR spectra of the photo-cured sample

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