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H. Kaczmarek, B. Królikowski, E. Klimiec, D. Bajer

Characteristics of the structure of materials designed for the manufacture
of piezoelectric composites based on polypropylene

Polimery 2017, No 7-8, 539


DOI: dx.doi.org/10.14314/polimery.2017.539

Summary

Composites based on isotactic polypropylene (i-PP) modified by organophilized montmorillonite (MMT) have been obtained, as potential piezoelectric materials, by extrusion without addition of compatibilizer. The crystallinity of these products has been studied using X-ray diffraction. The morphology and mechanical properties have been determined by SEM and tensile tests, respectively. The formation of cellular structure was observed in the i-PP composites. Also, they exhibit an increase in the degree of crystallinity of the PP matrix when compared to virgin polymer. The parameters characterizing the mechanical properties of montmorillonite-filled i-PP are decreased, but the range of stresses for which Hooke's law applies is similar for i-PP composites containing 2.5 and 5 wt % MMT as well as for neat PP.
Keywords: polymer composites, isotactic polypropylene, modified montmorillonite, SEM, XRD, mechanical properties
e-mail: halina@umk.pl
H. Kaczmarek, B. Królikowski, E. Klimiec, D. Bajer (900.2 KB)
Characteristics of the structure of materials designed for the manufacture of piezoelectric composites based on polypropylene