Influence of morphology on ortho-positronium annihilation characteristics in polyamide 6

Samples of polyamide 6 (PA6) of different morphology were studied with use of WAXS, SAXS and PALS technique. The determined ortho-positronium characteristics reflect variations in morphology and particularly the presence of defects at the interface between the crystalline and amorphous region as well as the interaction between the crystalline and the amorphous phases existing in the polyamide samples.