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Base-initiated ring-opening polymerization reaction rates

Cationic ring-opening polymerizations are also nucleophilic substitution reactions e.g. equation (7). Two experiments are frequently employed to follow the cationic polymerization of heterocyclic monomers. The first is based on the polymerization of a low molar ratio of monomer and initiator directly in an NMR sample tube. This experiment requires a low rate of polymerization and allows direct identification of all growing species and determination of the rate constants of all individual reaction steps by HNMR spectroscopy. Cyclic imino ethers were the first to be studied by this method. Subsequently, cationic polymerization of other heterocyclic monomers has been investigated." ... [Pg.1058]

See other pages where Base-initiated ring-opening polymerization reaction rates is mentioned: [Pg.236]    [Pg.219]    [Pg.3989]    [Pg.148]    [Pg.327]    [Pg.3988]    [Pg.375]    [Pg.203]    [Pg.142]    [Pg.401]    [Pg.196]    [Pg.70]    [Pg.612]    [Pg.133]    [Pg.196]    [Pg.165]    [Pg.651]    [Pg.24]    [Pg.24]    [Pg.666]   
See also in sourсe #XX -- [ Pg.77 ]



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Base initiation

Base-initiated ring-opening polymerization

Initial rate

Initial reaction rate

Initiation reaction

Initiator based

Initiator polymeric

Polymeric bases

Polymerization initial rate

Polymerization rate

Polymerization reaction

Polymerization reaction rate

Reaction initiated

Ring initiators

Ring opening reactions

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