Depletion force - Revision history

Carl McBride: Depletion Force moved to Depletion force

2008-01-30T11:14:32Z

Depletion Force moved to Depletion force

← Older revision	Revision as of 13:14, 30 January 2008
(No difference)

Carl McBride at 11:02, 30 January 2008

2008-01-30T11:02:22Z

← Older revision		Revision as of 13:02, 30 January 2008
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	{{Stub-general}}		{{Stub-general}}
	The '''depletion force''' is an [[entropy \|entropic]] force arising from the excluded volume (and hence net entropy gain) in a binary [[colloids \|colloidal]] solution.		The '''depletion force''' is an [[entropy \|entropic]] force arising from the [[excluded volume]] (and hence net entropy gain) in a binary [[colloids \|colloidal]] solution.
	==References==		==References==
	#[http://dx.doi.org/10.1063/1.1740346 Sho Asakura and Fumio Oosawa "Surface Tension of High-Polymer Solutions", Journal of Chemical Physics '''22''' 1255 (1954)]		#[http://dx.doi.org/10.1063/1.1740346 Sho Asakura and Fumio Oosawa "Surface Tension of High-Polymer Solutions", Journal of Chemical Physics '''22''' 1255 (1954)]
	#[http://dx.doi.org/10.1002/pol.1958.1203312618 Sho Asakura and Fumio Oosawa "Interaction between particles suspended in solutions of macromolecules", Journal of Polymer Science '''33''' pp. 183-192 (1958)]		#[http://dx.doi.org/10.1002/pol.1958.1203312618 Sho Asakura and Fumio Oosawa "Interaction between particles suspended in solutions of macromolecules", Journal of Polymer Science '''33''' pp. 183-192 (1958)]
	#[http://dx.doi.org/10.1063/1.2820785 Weihua Li, Tao Yang and Hong-ru Ma "Depletion potentials in colloidal mixtures of hard spheres and rods", Journal of Chemical Physics '''128''' 044910 (2008)]		#[http://dx.doi.org/10.1063/1.2820785 Weihua Li, Tao Yang and Hong-ru Ma "Depletion potentials in colloidal mixtures of hard spheres and rods", Journal of Chemical Physics '''128''' 044910 (2008)]

Carl McBride at 11:00, 30 January 2008

2008-01-30T11:00:05Z

← Older revision		Revision as of 13:00, 30 January 2008
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	The '''depletion force''' is an [[entropy \|entropic]] force arising from the excluded volume (and hence net entropy gain) in a binary [[colloids \|colloidal]] solution.		The '''depletion force''' is an [[entropy \|entropic]] force arising from the excluded volume (and hence net entropy gain) in a binary [[colloids \|colloidal]] solution.
	==References==		==References==
	#[http://dx.doi.org/10.1063/1.1740346 S. Asakura and F. Oosawa "Surface Tension of High-Polymer Solutions", Journal of Chemical Physics '''22''' 1255 (1954)]		#[http://dx.doi.org/10.1063/1.1740346 Sho Asakura and Fumio Oosawa "Surface Tension of High-Polymer Solutions", Journal of Chemical Physics '''22''' 1255 (1954)]
	#[http://dx.doi.org/10.1002/pol.1958.1203312618 Sho Asakura, Fumio Oosawa "Interaction between particles suspended in solutions of macromolecules", Journal of Polymer Science '''33''' pp. 183-192 (1958)]		#[http://dx.doi.org/10.1002/pol.1958.1203312618 Sho Asakura and Fumio Oosawa "Interaction between particles suspended in solutions of macromolecules", Journal of Polymer Science '''33''' pp. 183-192 (1958)]
	#[http://dx.doi.org/10.1063/1.2820785 Weihua Li, Tao Yang and Hong-ru Ma "Depletion potentials in colloidal mixtures of hard spheres and rods", Journal of Chemical Physics '''128''' 044910 (2008)]		#[http://dx.doi.org/10.1063/1.2820785 Weihua Li, Tao Yang and Hong-ru Ma "Depletion potentials in colloidal mixtures of hard spheres and rods", Journal of Chemical Physics '''128''' 044910 (2008)]

Carl McBride at 10:49, 30 January 2008

2008-01-30T10:49:16Z

← Older revision		Revision as of 12:49, 30 January 2008
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	The '''depletion force''' is an [[entropy \|entropic]] force arising from the excluded volume (and hence net entropy gain) in a binary [[colloids \|colloidal]] solution.		The '''depletion force''' is an [[entropy \|entropic]] force arising from the excluded volume (and hence net entropy gain) in a binary [[colloids \|colloidal]] solution.
	==References==		==References==
	#[http://dx.doi.org/10.1002/pol.1958.1203312618 Sho Asakura, Fumio Oosawa "Interaction between particles suspended in solutions of macromolecules", Journal of Polymer Science '''33''' pp. 183 - 192 (1958)]		#[http://dx.doi.org/10.1063/1.1740346 S. Asakura and F. Oosawa "Surface Tension of High-Polymer Solutions", Journal of Chemical Physics '''22''' 1255 (1954)]
			#[http://dx.doi.org/10.1002/pol.1958.1203312618 Sho Asakura, Fumio Oosawa "Interaction between particles suspended in solutions of macromolecules", Journal of Polymer Science '''33''' pp. 183-192 (1958)]
			#[http://dx.doi.org/10.1063/1.2820785 Weihua Li, Tao Yang and Hong-ru Ma "Depletion potentials in colloidal mixtures of hard spheres and rods", Journal of Chemical Physics '''128''' 044910 (2008)]

Carl McBride: Removed copyright material

2007-11-23T09:36:27Z

Removed copyright material

← Older revision		Revision as of 11:36, 23 November 2007
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			{{Stub-general}}
	The '''depletion force''' is an [[entropy \|entropic]] force arising from the excluded volume (and hence net entropy gain) in a binary [[colloids \|colloidal]] solution.		The '''depletion force''' is an [[entropy \|entropic]] force arising from the excluded volume (and hence net entropy gain) in a binary [[colloids \|colloidal]] solution.

	~~From the abstract of the 1958 paper by Asakura and Oosawa (Ref. 1):~~

	:An attractive force appears between particles suspended in solutions of macromolecules when there is neither direct interaction between two particles nor energetic interaction between particles and solute macromolecules. The magnitude of this force is of the order of the osmotic pressure of the solution of macromolecules and the range is of the order of the diameter of macromolecules. This force is calculated as a function of concentration, shape, and charge of macromolecules, and it is shown that it becomes stronger in solutions of chain macromolecules or of macromolecules of dissymmetrical shape than in solutions of rigid spherical macromolecules at the same net concentration. If macromolecules have charge, the force can be greatly intensified. In every case numerical estimation is made, and it is found that actually this kind of force can have a remarkable influence on the state of suspended particles. Numerical examples of the critical concentration of particles at their macroscopic aggregation are given. Finally a short description is added on the effect of energetic interaction between particles and macromolecules. ''
	==References==		==References==
	#[http://dx.doi.org/10.1002/pol.1958.1203312618 Sho Asakura, Fumio Oosawa "Interaction between particles suspended in solutions of macromolecules", Journal of Polymer Science '''33''' pp. 183 - 192 (1958)]		#[http://dx.doi.org/10.1002/pol.1958.1203312618 Sho Asakura, Fumio Oosawa "Interaction between particles suspended in solutions of macromolecules", Journal of Polymer Science '''33''' pp. 183 - 192 (1958)]

Nice and Tidy at 09:49, 7 September 2007

2007-09-07T09:49:56Z

← Older revision		Revision as of 11:49, 7 September 2007
Line 1:		Line 1:
	An entropic force arising from the excluded volume (and hence net entropy gain) in a binary colloidal solution.		The '''depletion force''' is an [[entropy \|entropic]] force arising from the excluded volume (and hence net entropy gain) in a binary [[colloids \|colloidal]] solution.

	From the abstract of the ~~1954~~ paper by Asakura and Oosawa (J. ~~Chem. Phys~~):		From the abstract of the 1958 paper by Asakura and Oosawa (Ref. 1):

	''An attractive force appears between particles suspended in solutions of macromolecules when there is neither direct interaction between two particles nor energetic interaction between particles and solute macromolecules. The magnitude of this force is of the order of the osmotic pressure of the solution of macromolecules and the range is of the order of the diameter of macromolecules. This force is calculated as a function of concentration, shape, and charge of macromolecules, and it is shown that it becomes stronger in solutions of chain macromolecules or of macromolecules of dissymmetrical shape than in solutions of rigid spherical macromolecules at the same net concentration. If macromolecules have charge, the force can be greatly intensified. In every case numerical estimation is made, and it is found that actually this kind of force can have a remarkable influence on the state of suspended particles. Numerical examples of the critical concentration of particles at their macroscopic aggregation are given. Finally a short description is added on the effect of energetic interaction between particles and macromolecules. ''		:An attractive force appears between particles suspended in solutions of macromolecules when there is neither direct interaction between two particles nor energetic interaction between particles and solute macromolecules. The magnitude of this force is of the order of the osmotic pressure of the solution of macromolecules and the range is of the order of the diameter of macromolecules. This force is calculated as a function of concentration, shape, and charge of macromolecules, and it is shown that it becomes stronger in solutions of chain macromolecules or of macromolecules of dissymmetrical shape than in solutions of rigid spherical macromolecules at the same net concentration. If macromolecules have charge, the force can be greatly intensified. In every case numerical estimation is made, and it is found that actually this kind of force can have a remarkable influence on the state of suspended particles. Numerical examples of the critical concentration of particles at their macroscopic aggregation are given. Finally a short description is added on the effect of energetic interaction between particles and macromolecules. ''
			==References==
			#[http://dx.doi.org/10.1002/pol.1958.1203312618 Sho Asakura, Fumio Oosawa "Interaction between particles suspended in solutions of macromolecules", Journal of Polymer Science '''33''' pp. 183 - 192 (1958)]

Hooked: A topic that I feel belongs on Sklogwiki, will try and come back to flesh it out

2007-09-07T04:02:09Z

A topic that I feel belongs on Sklogwiki, will try and come back to flesh it out

New page

An entropic force arising from the excluded volume (and hence net entropy gain) in a binary colloidal solution.

From the abstract of the 1954 paper by Asakura and Oosawa (J. Chem. Phys):

''An attractive force appears between particles suspended in solutions of macromolecules when there is neither direct interaction between two particles nor energetic interaction between particles and solute macromolecules. The magnitude of this force is of the order of the osmotic pressure of the solution of macromolecules and the range is of the order of the diameter of macromolecules. This force is calculated as a function of concentration, shape, and charge of macromolecules, and it is shown that it becomes stronger in solutions of chain macromolecules or of macromolecules of dissymmetrical shape than in solutions of rigid spherical macromolecules at the same net concentration. If macromolecules have charge, the force can be greatly intensified. In every case numerical estimation is made, and it is found that actually this kind of force can have a remarkable influence on the state of suspended particles. Numerical examples of the critical concentration of particles at their macroscopic aggregation are given. Finally a short description is added on the effect of energetic interaction between particles and macromolecules. ''