Published : 2020-02-28

Selected properties of polypropylene composites with shungite


The results of investigations of the influence of shungite content (up to 50 weight %) in polypropylene matrix on the selected functional and processing properties of the composites are presented. Among others, mechanical strength (Fig. 2-5), impact strength (Fig. 6), and melt flow rate (Fig. 7) were evaluated. Thermal characteristics of the composites prepared was studied by differential scanning calorimetry (DSC, Fig. 8, 9) and thermogravimetry (Fig. 10, 11). Thermo-mechanical properties were determined by dynamic mechanical analysis (DMA, Fig. 12). Surface and volume resistivity has been studied as well (Fig. 14). Wettability was also determined (Fig. 13) and on this basis the values of surface free energy were calculated according to Owens-Wendt method. It was found that shungite filled polypropylene composites were hydrophobic materials less susceptible to longitudinal strain at tension, showing lower impact strength, better anti-electrostatic properties and worse electro-insulating ones.





Download files

PDF (Język Polski)

Żenkiewicz, M., Richert, J., Rytlewski, P., Moraczewski, K., & Stepczyńska, M. (2020). Selected properties of polypropylene composites with shungite. Polimery, 55(2), 119-126. Retrieved from