• Synthesis and characterization of 2-hydroxy-4-methoxyacetophenoneurea-formaldehyde resins and their ion-exchange properties

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      https://www.ias.ac.in/article/fulltext/jcsc/102/01/0031-0038

    • Keywords

       

      Chelation ion-exchange; batch equilibration; distribution ratio

    • Abstract

       

      Resins were prepared by condensing 2-hydroxy-4-methoxyacetophenone (2-H-4-MAc) with urea and formaldehyde in the presence of 2 M HCl/2 M H2SO4 catalyst with varying molar ratios of reacting monomers. The resin samples were characterized by elemental analyses and IR spectral studies.$$\bar M_n $$ was determined by vapour pressure osmometry and non-aqueous conductometric titration in pyridine. Viscosity measurements of the resin samples were carried out in dimethylformamide. Chelation ion-exchange properties of 1∶1 resin for selected metal ions have also been studied employing the batch-equilibration method. This method involved the measurement of distribution of a given metal between a resin sample and a solution containing metal ions. The study was carried out over a wide pH range and in media of differing ionic strengths.

    • Author Affiliations

       

      K D Patel1 M M Patel1

      1. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar - 388 120, India
    • Dates

       
  • Journal of Chemical Sciences | News

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