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Quizzed article | REF: J5830 V2

Chain polymerization Mechanisms.

Author: Thierry HAMAIDE

Publication date: May 10, 2017, Review date: October 1, 2020 | Lire en français

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    2. Ionic polymerizations

    2.1 Anionic polymerizations

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    2.1.1 Primers and macromolecular chain construction

    The active center is a carbanion or oxanion associated with a counterion, usually metallic. Polymerization can take place by opening a vinyl double bond (styrene, diene, methyl methacrylate...) or a heterocycle (oxirane, lactone, lactam, cyclosiloxane...). Initiators are organometallic compounds such as butyl lithium (BuLi), diphenylmethane potassium, cumyl potassium, alkali alcoholates (potassium ethanolate...) or radical ion-generating...

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