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Kinetics of the fusion of drops of polydimethylsiloxane on solid surfaces

  • Physical Chemistry
  • Published:
Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    Within the framework of the model presuming a triangular cross section of the drop, the kinetic equation of the fusion of two drops on a solid surface was obtained, satisfactorily describing the experimental data, and the best agreement is observed for low temperatures, low values of the initial height of the drops, and high values of the height of the neck z, i.e., for low rates of fusion.

  2. 2.

    The ratios of the surface tension to the viscosity of the substance σ/η calculated from the equation of fusion for all temperatures are close to the values of σ/η obtained on the basis of the literature data.

  3. 3.

    The rate of fusion increases with increasing temperature and initial height of the drop, and this effect is manifested to the greatest degree in the initial period of the process.

  4. 4.

    The close values of the apparent activation energy of fusion and viscous flow show that fusion proceeds according to a mechanism of viscous flow.

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Literature cited

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Authors and Affiliations

  1. Institute of Physical Chemistry, Academy of Sciences of the USSR, Moscow

    V. V. Arslanov & V. A. Ogarev

Authors
  1. V. V. Arslanov
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  2. V. A. Ogarev
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1795–1799, August, 1974.

The authors would like to express their gratitude to A. A. Trapeznikov for his valuable advice on the performance of the work and V. M.Rudom for his useful discussion of the results.

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Arslanov, V.V., Ogarev, V.A. Kinetics of the fusion of drops of polydimethylsiloxane on solid surfaces. Russ Chem Bull 23, 1716–1719 (1974). https://doi.org/10.1007/BF00923195

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  • DOI: https://doi.org/10.1007/BF00923195

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