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F. Lembicz, R. Ukielski

RAPID COMMUNICATION: Relaxation processes in poly(butylen terephthalate)

studied by the spin probe spectroscopy (in English)

Polimery 2003, No 4, 296


DOI: dx.doi.org/10.14314/polimery.2003.296


Summary

The results of investigations of relaxation processes in an amorphous part of poly(butylene terephthalate) (PBT) are presented. Electron paramagnetic resonance (EPR) measurements in the version of a spin probe method (ESR) were performed in the temperature range of 4-380 K. The study has revealed that in the low temperature range the spin probe behavior reflects the relaxation process (g) identified previously by other methods. The microwave power dependence of the ESR signal intensity indicates the usefulness of the saturation transfer method in the investigations of PBT and other polymers.


Keywords: poly(butylene terephthalate), electron spin resonance (ESR), spin probes, relaxation processes


F. Lembicz, R. Ukielski

Relaxation processes in poly(butylen terephthalate) studied by the spin probe spectroscopy (in English)