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Alginate polyelectrolyte ionotropic gels

Part III Kinetics of exchange of chelated divalent transition metal ions especially cobalt(II) and copper(II) by hydrogen ions in capillary ionotropic metal alginate polymembrane gels

Abstract

The kinetics and mechanism of exchange of cross-linked Cu2+ and Co2+ by H+ ions in their alginate gel complexes have been investigated, conductimetrically. The rate of exchange was found to decrease in the order Co > Ni > Cu alginates. The factors affected the rate of exchange such as the ionic radii of metal ions, width of capillaries, strength of chelation and the orientation of the solvent molecules and the macromolecular chains toward the chelated metal ions were discussed. The thermodynamic parameters of exchange have been evaluated and interpreted in terms of gel stability.

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References

  1. 1.

    H. Thiele,Z. Naturforsch B. 3 (1948) 778.

    Google Scholar 

  2. 2.

    Idem., Koll. Z. 136 (1954) 80.

    Google Scholar 

  3. 3.

    M. Specker, M. Kuchtner andH. Z. Harthamp,Z. Anal. Chem. 33 (1954) 141.

    Google Scholar 

  4. 4.

    T. Takahashi andE. Emura,Kōgyo kagaku Zasshi, Jpn 63 (1960) 1025.

    Google Scholar 

  5. 5.

    T. Takahashi, Y. Ishiwatri andH. Shirai,ibid. 66 (1963) 1458.

    Google Scholar 

  6. 6.

    R. M. Hassan, M. H. Wahdan andA. Hassan,Eur. Polym. J. 24 (1988) 281.

    Google Scholar 

  7. 7.

    R. H. Hassan, S. A. El-Shatoury, M. A. Mousa andA. Hassan,ibid. 24 (1988) 1173.

    Google Scholar 

  8. 8.

    R. M. Hassan, submitted for publication.

  9. 9.

    G. Dickel andA. Mayer,Z. Electrochem. 57 (1953) 901.

    Google Scholar 

  10. 10.

    G. Dickel andL. V. Niecieki,ibid. 59 (1955) 13.

    Google Scholar 

  11. 11.

    G. G. Hammes, “Investigation of Rates and Mechanisms of Reactions”, 3rd Edn (Wiley Interscience, London, 1974).

    Google Scholar 

  12. 12.

    G. Glasstone, K. J. Laidler andH. Eyring, “The Theory of Rate Processes” (McGraw-Hill, New York, 1941).

    Google Scholar 

  13. 13.

    A. Haugh andO. Smidsröd,Acta Chem. Scand. 19 (1965) 341.

    Google Scholar 

  14. 14.

    R. M. Hassan, A. Awad andA. Hassan,J. Polym. Sci. (in press).

  15. 15.

    R. Schweiger,Org. Chem. 27 (1962) 1789.

    Google Scholar 

  16. 16.

    R. M. Hassan, M. Th. Makhlouf, A. M. Summan andA. Awad,Eur. Polym. J. 25 (1989) 993.

    Google Scholar 

  17. 17.

    H. Thiele andK. Hallich,Koll. Z. 151 (1957) 1.

    Google Scholar 

  18. 18.

    R. M. Hassan andM. A. Abd-Alla,Acta Polym. (in press).

  19. 19.

    H. Thiele, K. Plohnke, E. Brandt andG. Moll,Koll. Z. 182 (1962) 24.

    Google Scholar 

  20. 20.

    H. Thiele andG. Anderson,Koll. Z. 140 (1955) 76.

    Google Scholar 

  21. 21.

    K. Plohnke, Diploma Arbert, Kiel (1960).

  22. 22.

    R. M. Hassan (submitted for publication).

  23. 23.

    S. Olav,Acta Chem. Scand. 19 (1965) 329.

    Google Scholar 

  24. 24.

    R. Schweiger,Koll. Z. 196 (1964) 47.

    Google Scholar 

  25. 25.

    R. M. Hassan, A. M. Summan, M. K. Hassan andS. A. El-Shatoury,Eur. Polym. J. 25 1209 (1989).

    Google Scholar 

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Hassan, R.M. Alginate polyelectrolyte ionotropic gels. J Mater Sci 26, 5806–5810 (1991). https://doi.org/10.1007/BF01130118

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Keywords

  • Polymer
  • Alginate
  • Ionic Radius
  • Thermodynamic Parameter
  • Solvent Molecule