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Interaction of Polymeric Hydroperoxides with NO

The phenomenon of hydroperoxide decomposition under the action of NO was studied using macromolecular peroxides and their low-molecular analogues [65, 66]. It has been shown [66] that NO-induced decomposition of polypropylene (PP) hydroperoxides leads to the formation of low-molecular hydrocarbons, which is indicative of the degradation of macromolecules. The primary stage of the decomposition is represented by the reaction [65, 66]  [Pg.82]

The reaction of hydroperoxides with NO can also proceed with the formation of peroxy radicals  [Pg.83]

At high hydroperoxide concentrations in solution, the process was described as decomposition of hydroperoxide dimers by NO [65]  [Pg.83]

Pryor and co-workers [67] gave evidence that NO, which is a more active radical as compared with NO, cannot directly decompose hydroperoxides. The reaction is induced by non-paramagnetic dimers of N O. In this context, the scheme including the reactions (Equations 3.72-74) is not evident. [Pg.83]

The character of the kinetic curves cannot be explained from the mechanism presented by the reactions (Equation 3.72-74). According to these reactions, based on the direct interaction of hydroperoxides with NO, the rate of decomposition is maximal at the beginning of the process and decreases with a decrease in the concentration of ROOH. The shape of the kinetic curves is characteristic of autoaccelerated reactions with an induction period. [Pg.83]


See other pages where Interaction of Polymeric Hydroperoxides with NO is mentioned: [Pg.82]   


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