4. Conclusion

This brief overview of EPR's potential in the study of polymers highlights the value of this technique. EPR provides information not only on the nature of the radicals created in materials, but also on the surrounding environment. Today, given the multiplicity of problems, new EPR analysis methods are being developed (pulsed EPR, very high field EPR, low field EPR, automatic determination of dynamic parameters from spectra). Thanks to its specificity, sensitivity and ease of use, EPR is a powerful tool for analysis and research .