Abstract
This paper presents the investigation of the catalytic agent influence on the crystallinity degree of polymers (metallocene polyethylene). Differential scanning calorimetry was the method used to determine the crystallinity. It was underlined that the catalyst has a great influence on the crystallinity of metallocene polyethylene. The results are in good agreement with the preceeding ones [4]. Keywords: polymer, metallocene polyethylene, crystallinity, differential scanning calorimetry, baseline method, First Law method