Properties Research of Secondary Polymeric Materials on the Basis of Polypropylene and Polyethylene Terephthalate Got Under the Influence of Ultrasonic Oscillations on Polymeric Melt - Progress in Organic and Physical Chemistry: Structures and Mechanisms - page 154

the effective viscosity of the samples differ signi¿ cantly. Since PP treated without ul-
trasound, has very low values of this characteristics and ultrasonic treatment increases
the effective viscosity of the PP. When comparing the melt À ow index (MFI) of PP
obtained with the use of ultrasonic vibrations generator and PET found that MFI of
these samples are comparable, that might improve their compatibility with the joint
processing.
On the next stage of research it was necessary to receive and investigate the prop-
erties of composed mixes that were made by blending of original components and
increasing of PP's content in PET. The received samples were researched on physi-
co-mechanical properties like original components. In the Figures 8 and 9 there are
dependences of breakdown voltage (Figure 8) and percent elongation with rupture
(Figure 9) on PP's content in PET.
FIGURE 8 Dependence of polymeric composition's breakdown voltage on the amount of
processing's cycles.
FIGURE 9 Dependence of polymeric composition's percent elongation with rupture on the
amount of processing's cycles.