ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

X-ray investigation of the temperature effect on the molecular structure of polypropylene

I. Diačik and K. Fusek

Vyskumny Ustav Chem. Vlaken, Svit

Abstract: X-ray diffraction was applied in the study of the effect of the temp. on the mol. structure of isotactic polypropylene (I) with a different mol. arrangement. The roentgenograms indicate that, at >75°, there is a change from a thermodynamically stable monoclinic arrangement. With thermal treatment of I with a thermodynamically stable monoclinic mol. arrangement up to 160°, there are no substantial changes in the mol. arrangement that can be detd. Above this temp., there is a gradual fusion of the polymer system, which is shown in the roentgenogram by the diffusion ring, characteristic of the disordered (amorphous) sphere.

Full paper in Portable Document Format: 205a381.pdf (in Slovak)

Chemical Papers 20 (5) 381–389 (1966)