Difference between revisions of "Sol-Gel Transition"
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| − | - | + | Some examples of sol-gel transitions you may witness are the curing of epoxy [1], the gelling of Jell-O ( ), and the gelation of Jam (Pectin). |
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http://www.gi.alaska.edu/ScienceForum/ASF8/887.html | http://www.gi.alaska.edu/ScienceForum/ASF8/887.html | ||
http://www1.lsbu.ac.uk/water/hypec.html#fun | http://www1.lsbu.ac.uk/water/hypec.html#fun | ||
Revision as of 15:40, 4 November 2009
Definition
The sol-gel transition (also known as gelation) is simply a change from a liquid state to a gel state. In the liquid state, components dispersed in the liquid are relatively free to move about. In the gel state, these sub-units bond together to form a network extending throughout the whole substance. This network gives the material an elasticity: a solid-like property [1, p. 95].
The nature of the sub-units and the bonds between play an important role in the properties of the gel formed. [1, p. 95].
Examples
Some examples of sol-gel transitions you may witness are the curing of epoxy [1], the gelling of Jell-O ( ), and the gelation of Jam (Pectin).
http://www.gi.alaska.edu/ScienceForum/ASF8/887.html http://www1.lsbu.ac.uk/water/hypec.html#fun
References
[1] R. Jones, "Soft Condensed Matter," Oxford University Press Inc., New York (2002).
