X-ray diffraction and calorimetric studies on polypropylene crystallization in non-isothermal conditions.

Crystallization plays important role determining structure and morphology of a polymer subjected to processing forming commodities from synthetic plastics. Due to the nature of technological processes, crystallization occurs during variable external conditions (pressure, temperature, etc.). Consequently, understanding of non-isothermal crystallization processes is crucial for designing the material required properties. The present paper reports some results of X-ray diffraction and calorimetric studies on kinetics of polypropylene crystallization occuring during linear cooling with various rates.