Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Intramolecular propagation with peroxy radicals

This reaction involves the formation of the polymer hydroperoxide following the intramolecular regrouping of a hydrogen atom and free radical. [Pg.433]

Many workers have reported the importance of intramolecular propagation in polypropylene oxidation [144, 148, 390, 550, 633] and photodegradation [125]. Dulog et al. [193, 194] asserted that only a crystalline polymer reacts in this way. Tobolsky et al. [615] concluded, from a study of the oxidation of ethylene—propene rubber, that intramolecular propagation is involved. The importance of intramolecular [Pg.433]


With the formation of free radicals having been initiated, these radicals react with oxygen (Reaction 3) to begin the propagation of the radical chains in forming a peroxy radical. The peroxy radical then attacks the 10-carbon-hydrogen bond to form the hydroperoxide radical (Reaction 4). [The possibility of such an intramolecular attack has been demonstrated in an aliphatic system where two reactive hydrogen atoms are located in the favorable 1,4-positions (9)]. [Pg.222]


See other pages where Intramolecular propagation with peroxy radicals is mentioned: [Pg.433]    [Pg.433]    [Pg.143]    [Pg.219]    [Pg.325]    [Pg.109]    [Pg.331]   


SEARCH



Peroxy

Peroxy radicals

Propagation radical

Radicals intramolecular

Radicals) propagating

© 2024 chempedia.info