On the Functions of Molecular Sponge in Heterophase Chain Reactions of Block Polymers (on the Example of Polystyrene Arylation by Dibenzoyl Peroxide)
Titel:
On the Functions of Molecular Sponge in Heterophase Chain Reactions of Block Polymers (on the Example of Polystyrene Arylation by Dibenzoyl Peroxide)
Auteur:
Mikheyev, Yu. A. Zaikov, G. E.
Verschenen in:
International journal of polymeric materials
Paginering:
Jaargang 34 (1996) nr. 1 pagina's 29-57
Jaar:
1996-09-01
Inhoud:
Features of interactions of amorphous polystyrene with dibenzoyl peroxide, which are not explained by the homogeneous mechanism, are described by the heterophase scheme possessing two conjugated reactionary paths, localized in separate structural zones of polymer matrix. The reaction scheme is based on the carcass-micellar model of supermolecular organization, according to which zones of two types exist in molecular-sponge cells. These zones, different by fluctuation dynamics of polymer chains and sizes of micropores (traps for reacting particles) provide inadequate condition for excitation of the acts of initiation, propagation and termination of the reaction sequences. The principle of the interzone conjugation of kinetic chains under the conditions of fluctuation dynamics of the molecular sponge chains, limited by the supermolecular carcass, is exhibited.
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