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Figure 1.19. Oxygen absorption by DTCU before (I) and after (2) irradiation.
Figure 1.20. Dependence of PCA mass loss on duration of heating at 200
0
C of stabilized by: I-LV; 2-
(LV+J
2
); 3-(LV+Br
2
); 4-initial.
Stabilizing activity of HC is observed at thermooxidative destruction (Figure1.20).
Moreover, in this case the following sequence of thermostabilizing activity is characteristic:
(LV+2Br
−
)>(LV+2J
−
)>(LV)
These conclusions were proved by the data of complex thermographic analysis.
Temperature of intensive destruction of modified polymers is higher, than in initial, by 15-
30
0
C. Going on with earlier works [139] on investigation light and thermal stability of
polymers with additives of carbazolesulfonamides, thermooxidative stability of PCA dyed by
azo dyes of the following structures was studied:
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