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Particle size and sol stability in metal colloids

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Summary

It is shown experimentally that the stability of metal sols depends on particle size. Sols with small particles are more stable against electrolyte coagulation than coarser suspensions. It is possible to separate metal particles of different radii by fractionated coagulation. Results are explained from the diminishedvan der Waals attraction between small particles. Consequences for the repeptization of metal sols and for the measurement ofHamaker constants are discussed. It is concluded that the smallness of the particles is a decisive factor for the stability of metal colloids.

Zusammenfassung

Es wird gezeigt, daß die Stabilität von Metallkolloiden von der Teilchengröße abhängig ist. Systeme aus kleinen Teilchen sind bei Elektrolytkoagulation wesentlich stabiler als Systeme mit größeren Teilchen. Durch fraktionierte Flockung werden Kolloidteilchen dem Teilchenradius nach getrennt. Die Erklärung dieser Ergebnisse folgt aus der verringertenvan der Waalsschen Anziehung zwischen kleinen Teilchen. Konsequenzen für die Repeptisierung von Metallkolloiden und für die Bestimmung derHamakerschen Konstante werden diskutiert. Die Stabilität der Metallkolloide wird von der Teilchengröße weitgehend beeinflußt.

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References

  1. Krupp, H., Adv. Coll. Int. Sc.1, 111 (1967).

    Google Scholar 

  2. Deryagin, B. V., V. M. Muller, andYa. T. Rabinovich, Koll. Zh.31, 304 (1969).

    Google Scholar 

  3. Rouweler, G. C. J., Chem. Phys. Lett.8, 275 (1971).

    Google Scholar 

  4. Ottewill, R. H. andJ. N. Shaw, Disc. Far. Soc.42, 154 (1966).

    Google Scholar 

  5. Reerink, H. andJ. Th. G. Overbeek, Disc. Far. Soc.18, 74 (1954).

    Google Scholar 

  6. Turkevich, J., J. Hillier, andP. C. Stevenson, Disc. Far. Soc.11, 55 (1951).

    Google Scholar 

  7. Frens, G., to be published.

  8. Zsigmondy-Thiessen, Das kolloide Gold. pg. 48, 64 (Leipzig 1925).

  9. Frens, G., Kolloid-Z. u. Z. Polymere233, 922 (1969).

    Google Scholar 

  10. Holliday, A. K., Trans. Far. Soc.43, 661 (1947).

    Google Scholar 

  11. Hamaker, H. C., Physica4, 1058 (1937).

    Google Scholar 

  12. Hoskin, N. E. andS. Levine, Phil. Trans. Roy. Soc.A248, 433 (1956).

    Google Scholar 

  13. McCartney, L. N. andS. Levine, J. Coll. Int. Sc.30, 345 (1969).

    Google Scholar 

  14. Frens, G., J. Coll. Int. Sc., in press.

  15. Langbein, D., J. Phys. Chem. Solids32, 1657 (1971).

    Google Scholar 

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Author notes

  1. G. Frens

    Present address: Philips Research Laboratories, N. V. Philips' Gloeilampenfabrieken, Eindhoven, The Netherlands

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    Frens, G. Particle size and sol stability in metal colloids. Kolloid-Z.u.Z.Polymere 250, 736–741 (1972). https://doi.org/10.1007/BF01498565

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    • DOI: https://doi.org/10.1007/BF01498565

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