Jump to content

Coalescence (chemistry)

From Wikipedia, the free encyclopedia

In chemistry, coalescence is a process in which two phase domains of the same composition come together and form a larger phase ___domain. In other words, the process by which two or more separate masses of miscible substances seem to "pull" each other together should they make the slightest contact.

IUPAC definition[1]

Disappearance of the boundary between two particles in contact, or between a particle
and a polymer macrophase followed by changes of shape leading to a reduction of the
total surface area.

Note 1: Definition modified from that in ref.[2]

Note 2: The coagulation of an emulsion, viz. the formation of aggregates, may be followed
by coalescence. If coalescence is extensive it leads to the breaking of an emulsion.[3]

References

[edit]
  1. ^ IUPAC Gold Book. doi:10.1351/goldbook.C01119.
  2. ^ Alan D. MacNaught, Andrew R. Wilkinson, ed. (1997). Compendium of Chemical Terminology: IUPAC Recommendations (2nd ed.). Oxford: Blackwell Science. ISBN 0865426848.
  3. ^ Slomkowski, Stanislaw; Alemán, José V.; Gilbert, Robert G.; Hess, Michael; Horie, Kazuyuki; Jones, Richard G.; Kubisa, Przemyslaw; Meisel, Ingrid; Mormann, Werner; Penczek, Stanisław; Stepto, Robert F. T. (2011). "Terminology of polymers and polymerization processes in dispersed systems (IUPAC Recommendations 2011)". Pure and Applied Chemistry. 83 (12): 2229–2259. doi:10.1351/PAC-REC-10-06-03. S2CID 96812603.
[edit]