On the most significant processes of thermooxidative PVC degradation |
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| Authors: | T T Nagy B Turcsányi T Kelen and F Tüds |
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| Institution: | (1) Central Research Institute for Chemistry of the Hungarian Academy of Sciences, Budapest |
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| Abstract: | In the thermooxidative degradation of PVC two processes are of decisive importance: the elimination of HCl in allyl-activated steps producing polyene sequences in the polymer backbone, and the radical chain oxidation of these polyenes. The two processes are closely interrelated as the carrier radicals of the oxidation chain initiate also sequential HCl elimination. This results in an enhanced rate of HCl elimination and a low steady-state concentration of polyenes.
                          :  HCl -  ,    ,  .  , . . HCl.  HCl .
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