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Impurity Induced Slowing oF Nucleation in Emulsified Liquids

Published online by Cambridge University Press:  10 February 2011

Amy Herhold ,
Deniz Ertaş ,
Alex J. Levine  and
H. E. King Jr
Amy Herhold
Affiliation:
Exxon Research and Engineering Company, Clinton Township, Route 22 East, Annandale, New Jersey 08801
Deniz Ertaş
Affiliation:
Exxon Research and Engineering Company, Clinton Township, Route 22 East, Annandale, New Jersey 08801
Alex J. Levine
Affiliation:
Exxon Research and Engineering Company, Clinton Township, Route 22 East, Annandale, New Jersey 08801
H. E. King Jr
Affiliation:
Exxon Research and Engineering Company, Clinton Township, Route 22 East, Annandale, New Jersey 08801
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Abstract

We report detailed nucleation studies on the liquid -to -solid transition of hexadecane using nearly monodisperse hexadecane -in -water emulsions. A careful consideration of the kinetics of isothermal and nonisothermal freezing show deviations from predictions of classical nucleation theory, if one assumes that the emulsion droplet population is homogeneous. Similar deviations have been observed previously [3]. As an explanation, we propose a novel argument based on the dynamic generation of droplet heterogeneity mediated by mobile impurities. This proposal is in excellent agreement with existing data.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 543: Symposium W – Dynamics in Small Confining Systems IV , 1998 , 85
Copyright
Copyright © Materials Research Society 1999

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