Low polyolefin crystallinity fraction down to 0.3 % was determined during a kinetic experiment using the Xeuss 2.0 SAXS/WAXS system in combination with an integrated temperature control stage, the Linkam HFSX350.


Mechanical and physical properties of solid polymers are resulting from its crystallization kinetic which affects both the nanoscale structure and the level of crystallinity. The semi-crystalline state can be finely characterized at short length scale, identifying the crystallographic order, while the morphology of the crystalline phase can be described by investigation at long length scales.
A Wide Angle X-ray Scattering (WAXS) investigation of the crystalline fraction of an isotactic polypropylene (i-PP) corresponding to a typical processing route has been carried out as a function of temperature.