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Figure 2. TGA CSPE and CSPE containing 
5m.h. magnesium oxide
 
 
Figure 3. Swelling of the compositions in o-
xylene.
 
 
The weight loss of CSPE in the temperature range 140-180 ° C is associated with 
dehydrochlorination of the polymer. In this case, cross-linking occurs between the polymer 
macromolecules. The crosslinking of the elastomer is also confirmed by the low swelling of the 
compositions in o-xylene. So, the degree of swelling of compositions containing 40 wt. % CSPE 
does not exceed 30% (Fig. 3). At the same time, for materials with all ratios of VPE and CSPE in 
the composites, the swelling plateau is characteristic, which is very typical for cross-linked or 
partially cross-linked polymer composites.. 
Unfortunately, the compositions obtained, along with high strength, are characterized by a 
low relative and high residual elongation. In addition, the actively evolving hydrogen chloride at 
the stages of manufacturing and processing of compositions significantly complicates the 
technological process. 

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The process of thermal dehydrochlorination of ChSPE is catalyzed by hydrogen chloride. 
Consequently, it is possible to increase the temperature of the onset of decomposition of CSPE, 
possibly with the use of an acceptor of hydrogen chloride in the composition. Magnesium oxide 
was chosen as an HCI acceptor since the decomposition products of the polymer formed with its 
participation do not catalyze the degradation of CSPE. In addition, magnesium oxide is a part of 
most vulcanizing systems for CSPE. 
Differential-thermogravimetric studies showed that of thermoplastic elastomer with the 
composition VPE: HSPE and NPE: HSPE. On the DTA curve of the sample derivatogram in 
Figure 3. No. 1 VPE: CSPE - (70:30), six endothermic effects were found at temperatures of 133, 
184, 200, 230, 355, 780 0С and six exothermic effects at 80, 305, 390, 505, 605 and 660 0С. The 
total weight loss in the temperature range of 80 ° C according to the thermogravimetry curve is 
85.41%. The heating curve of the derivatogram of the sample is in Figure 3. No. 2 VPE: CSPE - 
(50:50) is characterized by six endothermic effects at temperatures of 128, 140, 230, 645, 720, 770 
0С and two exothermic effects at 316 and 485 0С. The total weight loss in the temperature range 
of 80-900 ° C according to the thermogravimetry curve is 91.24%. On the DTA curve of the 
derivatogram of the sample in Figure 3. No. 3 VPE: CSPE- (30:70), three endothermic effects are 
noted at 103, 200, 3050C and five exothermic effects at temperatures of 310, 345, 390, 535, 660 
and 7950C. Weight loss in the temperature range 80-900 ° C according to the thermogravimetry 
curve is 95.55%.