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Subject - Macromolecular Chemistry
In many ways, anionic polymerization is similar to its cationic counterpart. It can be initiated with a multitude of initiators, e.g. organometallic compounds, metal amides, alkoxides, hydroxides, cyanides, phosphines, amines etc. Compared to cationic polymerization, anionic polymerization is less temperature sensitive and the termination, if it happens at all, involves proton transfer from the solvent or another transfer reagent. Generally, anionic polymerizations are living polymerizations. Polymerization stops only if all monomers are used up. In order to restart the reaction new monomers have to be added. As a rule, the reaction is started by adding a nucleophile to the monomer.
See also: cationic polymerization