2. Applications of EPR to the study of polymers
EPR spectrum analysis can be used to assess a number of parameters (figure 3).
- ΔH: line width (distance between maximum and minimum of a line in the derivative of the absorption curve) ;
- a: hyperfine constant (distance between two consecutive lines) ;
- h1, h0, h-1: line intensity ;
- N: number of lines ;
- L: overall spectrum width.
2.1 Radical polymerization
Many polymerization reactions are initiated or accelerated by the presence in the reaction medium of substances capable of generating free radicals (proton abstraction ,...
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Applications of EPR to the study of polymers
Paramagnetic probes and labels (spin probe, spin label )
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