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      https://www.ias.ac.in/article/fulltext/boms/039/06/1541-1556

    • Keywords

       

      Phosphonate polymer; metal; strontium; EDX; SEM; pH.

    • Abstract

       

      Diethyl[3-(methoxydimethylsilyl)propyl]phosphonate (DMPP) polymer was synthesized for the strontium (II) metal ion recovery using diethylallylphosphonate as staring material. Diethylallylphosphonate was reactedwith poly(methylhydro)siloxane (MW 1900–2000 g mol$^{−1}$) in the presence of Speier’s catalyst. The synthesized monomer was characterized by IR, ${}^1$H NMR, ${}^{13}$C NMR and FT-IR spectroscopy techniques, and the synthesizedpolymers were characterized by IR and NMR spectroscopy, differential scanning calorimetry, thermogravimetric analysis and solubility. The synthesized polymer was used for sequestering strontium metal from the aqueous solution. The metal binding was examined by the energy dispersive spectroscopy and scanning electron microscopy for the adsorbed Sr(II). Batch adsorption studies were performed by varying three parameters, namely initial pH, adsorbentdose and the contact time. The reaction kinetics was determined by the Langmuir, Freundlich, and pseudo-firstand second-order models. Results of this study indicate that the synthesized polymer DMPP has been effective inremoving Sr(II) from the aqueous solution.

    • Author Affiliations

       

      S M BHOSLE1 S PONRATHNAM1 S S TAMBE2 N N CHAVAN1

      1. Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Pune 411008, India
      2. Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune 411008, India
    • Dates

       
  • Bulletin of Materials Science | News

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      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

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      Posted on July 25, 2019

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