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Vanillin-Based Polymers—part II: Synthesis of Schiff Base Polymers of Divanillin and Their Chelation with Metal Ions

2012; Hindawi Publishing Corporation; Volume: 2012; Linguagem: Inglês

10.5402/2012/532171

2090-8733

Ananda S. Amarasekara, Ashfaqur Razzaq,

Chemical Synthesis and Reactions

Condensation of renewable resources-based monomer divanillin with alkyl diamines gives Schiff base polymers with degree of polymerization (DP) ~25–32 in 88–95% yield. These yellow polymers are insoluble in water and common organic solvents, slightly soluble in warm DMSO, DMF and dissolves in aqueous NaOH. The polymers were characterized using FT-IR, 1 H, and 13 C NMR spectroscopy and by comparison with the model compound N,N ′ -bis (vanillidene)-1,3-propanediamine. Polymer prepared by condensation of divanillin and 1,6-diaminohexane is shown to chelate with Cu(II), Fe(II), and Co(II) metal ions in basic aqueous methanol.