engleski

Slow Molecular Motion of Spin Probe in the Glassy Polymer Matrix Detected by Double Modulation ESR,

The slow molecular motion of perdeuterated nitroxyl spin probe in amorphous polymer matrix of polybutadiene (PB), polyisobutylene (PIB), poly(methyl methacrylate) (PMMA) and paraffin have been studied by double modulation electron spin resonance (DMESR). The interrelationship between the spin-lattice relaxation rates obtained by DMESR and the local molecular dynamics of side chain groups was observed. An electron proton dipolar interaction as a possible mechanism which can affect detected relaxation rates was discussed.

EPR; spin probe; polymers

nije evidentirano