Electron Paramagnetic Resonance Spin Trapping (EPR–ST) Technique in Photopolymerization Processes
Fabienne Peyrot, Sonia Lajnef, Davy‐Louis Versace
Abstract
To face economic issues of the last ten years, free-radical photopolymerization (FRP) has known an impressive enlightenment. Multiple performing photoinitiating systems have been designed to perform photopolymerizations in the visible or near infrared (NIR) range. To fully understand the photochemical mechanisms involved upon light activation and characterize the nature of radicals implied in FRP, electron paramagnetic resonance coupled to the spin trapping (EPR–ST) method represents one of the most valuable techniques. In this context, the principle of EPR–ST and its uses in free-radical photopolymerization are entirely described.
Topics & Concepts
Electron paramagnetic resonancePhotopolymerPhotochemistrySpin trappingRadicalContext (archaeology)Materials scienceChemistryPolymerizationNuclear magnetic resonancePolymerPhysicsOrganic chemistryComposite materialBiologyPaleontologyPhotopolymerization techniques and applicationsAdvanced Polymer Synthesis and CharacterizationPhotochromic and Fluorescence Chemistry