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Anomalous drying dynamics of a polymer solution on a substrate

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Abstract.

When a polymer solution with volatile solvent is exposed to open air, an elastic layer (called a skin) is often formed at the surface of the solution due to evaporation of the solvent. After such a skin is formed, further extraction of the solvent from the solution caused by evaporation has generally been considered to reduce the pressure in the solution. We have found that, in PMMA/acetone droplet placed on a substrate, the liquid below the skin layer is pushed out as the solvent evaporates further. These phenomena indicate that the pressure in the solution increases by solvent evaporation. It is considered to be caused by the shrinkage and other structural changes taking place in the skin layer.

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Authors and Affiliations

  1. Graduate School of Engineering, The University of Tokyo, 113-8656, Tokyo, Japan

    Shunto Arai

  2. Center of Soft Matter Physics and its Applications, Beihang University, 100191, Beijing, China

    Masao Doi

Authors
  1. Shunto Arai
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  2. Masao Doi
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Correspondence to Shunto Arai.

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Arai, S., Doi, M. Anomalous drying dynamics of a polymer solution on a substrate. Eur. Phys. J. E 36, 63 (2013). https://doi.org/10.1140/epje/i2013-13063-6

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  • DOI: https://doi.org/10.1140/epje/i2013-13063-6

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