Preparation and reactivity of metal-containing monomers. 16. Thermal polymerization characteristics of transition metal acrylamide complexes
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The thermal polymerization of Mn(II), Co(II), Ni(II), and Zn(II) acrylamide nitrate complexes initiates spontaneously in the mp 80–100°C temperature range. Addition of a radical reaction inhibitor such as 2,2,4,4-tetramethyl-piperidine-1-oxide to these complexes shifts the polymerization range toward higher temperatures, while above certain concentrations of the additive, decomposition of the nitrate portion of the adducts takes place. A mechanism for the thermal polymerization of transition metal acrylamide nitrate complexes is proposed, involving initiation by the products of partial decomposition of the nitrate groups. A correlation or relationship has also been demonstrated between the thermal stability of these groups in the complexes and the ligand composition.
KeywordsPolymerization Nitrate Thermal Stability Adduct Acrylamide
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