Evaporation of microdroplets of azeotropic liquids

S. M. Rowan; Michael Newton; F. W. Driewer; Glen McHale

doi:10.1021/jp000938e

Evaporation of microdroplets of azeotropic liquids

S. M. Rowan^*, Michael Newton, F. W. Driewer, Glen McHale

^*Corresponding author for this work

EE Faculty Management and Administration

Research output: Contribution to journal › Article › peer-review

53 Citations (Scopus)

Abstract

This work reports data showing the evolution of contact angle with time for mixtures of water and 1-propanol at room temperature on poly(methyl methacrylate) (PMMA). The composition range investigated spans the azeotropic composition, thus encompassing systems containing excess water and excess 1-propanol. A discontinuity in the contact angle behavior is observed and it is suggested that this enables the identification of the azeotropic composition as 0.39 mole fraction of 1-propanol. This suggestion is supported by boiling point measurements made at around 20 mmHg. The discontinuity is associated with the presence of an instability, which causes a distortion around the droplet perimeter. It is suggested that the distortion is caused by competing effects of local surface tension maxima and minima.

Original language	English
Pages (from-to)	8217-8220
Number of pages	4
Journal	Journal of Physical Chemistry B
Volume	104
Issue number	34
DOIs	https://doi.org/10.1021/jp000938e https://doi.org/10.1021/jp000938e
Publication status	Published - 31 Aug 2000

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title = "Evaporation of microdroplets of azeotropic liquids",

abstract = "This work reports data showing the evolution of contact angle with time for mixtures of water and 1-propanol at room temperature on poly(methyl methacrylate) (PMMA). The composition range investigated spans the azeotropic composition, thus encompassing systems containing excess water and excess 1-propanol. A discontinuity in the contact angle behavior is observed and it is suggested that this enables the identification of the azeotropic composition as 0.39 mole fraction of 1-propanol. This suggestion is supported by boiling point measurements made at around 20 mmHg. The discontinuity is associated with the presence of an instability, which causes a distortion around the droplet perimeter. It is suggested that the distortion is caused by competing effects of local surface tension maxima and minima.",

author = "Rowan, {S. M.} and Michael Newton and Driewer, {F. W.} and Glen McHale",

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AU - Rowan, S. M.

AU - Newton, Michael

AU - Driewer, F. W.

AU - McHale, Glen

PY - 2000/8/31

Y1 - 2000/8/31

N2 - This work reports data showing the evolution of contact angle with time for mixtures of water and 1-propanol at room temperature on poly(methyl methacrylate) (PMMA). The composition range investigated spans the azeotropic composition, thus encompassing systems containing excess water and excess 1-propanol. A discontinuity in the contact angle behavior is observed and it is suggested that this enables the identification of the azeotropic composition as 0.39 mole fraction of 1-propanol. This suggestion is supported by boiling point measurements made at around 20 mmHg. The discontinuity is associated with the presence of an instability, which causes a distortion around the droplet perimeter. It is suggested that the distortion is caused by competing effects of local surface tension maxima and minima.

AB - This work reports data showing the evolution of contact angle with time for mixtures of water and 1-propanol at room temperature on poly(methyl methacrylate) (PMMA). The composition range investigated spans the azeotropic composition, thus encompassing systems containing excess water and excess 1-propanol. A discontinuity in the contact angle behavior is observed and it is suggested that this enables the identification of the azeotropic composition as 0.39 mole fraction of 1-propanol. This suggestion is supported by boiling point measurements made at around 20 mmHg. The discontinuity is associated with the presence of an instability, which causes a distortion around the droplet perimeter. It is suggested that the distortion is caused by competing effects of local surface tension maxima and minima.

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DO - 10.1021/jp000938e

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SP - 8217

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JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 34

ER -

Evaporation of microdroplets of azeotropic liquids

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