Polyvinyl chloride activation energy

We should scarcely dwell on the role of the nature and intensity of the energy influence in the process of decomposition. We should mention especially that, depending on the nature and intensily of the influence, the same impurities, contained in the polymer, can either accelerate or decelerate decomposition. Of the impurities that reduce the stability of polyvinyl chloride, compounds containing metals of variable valence, including iron salts, are especially undesirable. When present in the polymer even in negligible amounts, such salts extremely actively catalyze oxidative decomposition. 

Table 9.11 Temperature data, activation energies and pre-exponential factors for polyvinyl chloride ...

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