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 148

waste. Identi¿ cation of polymer's waste is really dif¿ cult in some cases. If we are
speaking about multi layers materials. Their identi¿ cation is impossible. Waste is
formed on the stage of materials processing and after packing's usage. It is utilized by
storing in the dumps and polygons or it can be burned. This has a negative effect on the
environment. That is why there are a lot of researches which study simultaneous pro-
cessing of thermodynamically incompatible polymers and getting of new composed
polymeric materials.
There is a row of dif¿ culties during processing of such polymers as PP and PET
and other polymeric compositions. They are connected with their thermodynamic in-
compatibility. It is known that ultrasonic oscillations can lead to reduction of molecu-
lar mass that can bring together polymers solubility parameters during their process-
ing. However, such researches of polymeric melts had been held small [1]. That is
why the purpose of our investigation is to study inÀ uence of ultrasonic oscillations on
polymers properties for designing of joint polymeric waste's processing of different
chemical nature.

13.2 EXPERIMENTAL PART
The PP “Kaplen” and PET TU6-05-1984-85 were chosen as objects of research. They
were exposed to multiple processing with ultrasonic vibro attachment and without it.
The compositions of PP and PET were made after processing's cycle of each polymer.
The received samples were analyzed on physico-mechanical and rheological proper-
ties. It has been investigated molecular structure of the samples.

13.3 DISCUSSION AND RESULTS
The investigations were conducted on a joint recycling PP and PET. Results of tests on
physical and mechanical properties are shown in Table 1.

TABLE 1 Physical and mechanical properties of PP and PET.

The number of cycles of
treatment

The damaging stress,
M Pa

The elongation at break,%

Without
ultrasonic
vibrations

With
ultrasonic
vibrations

Without ultrasonic
vibrations

With ultrasonic
vibrations

Polypropylene (PP)
1 37 ± 3 33 ± 2 13 ± 1 11,44 ± 0,7

2 36 ± 10 47 ± 10 14 ± 2 11,11 ± 1,2

3 33 ± 5 63 ± 7 12 ± 3 11,52 ± 0,5

4 36 ± 7 60 ± 5 12 ± 3 10,85 ± 1,2

Polyethylene terephthalate (PET)
1 49 ± 3 48 ± 3 302 ± 5 370 ± 2

2 73 ± 7 84 ± 2 263 ± 4 230 ± 4

3 54 ± 4 66 ± 4 28 ± 5 237 ± 2

4 28 ± 3 53 ± 2 19 ± 2 145 ± 3