Self-Consistent Field Modeling of Non-ionic Surfactants at the Silica−Water Interface:  Incorporating Molecular Detail

Langmuir ◽  
2008 ◽  
Vol 24 (8) ◽  
pp. 3960-3969 ◽  
Author(s):  
Bart R. Postmus ◽  
Frans A. M. Leermakers ◽  
Martien A. Cohen Stuart
Keyword(s):  
Ionic Surfactants ◽  
Water Interface ◽  
Field Modeling ◽  
Consistent Field ◽  
Molecular Detail ◽  
Self Consistent ◽  
Self Consistent Field

Capillary Adhesion in the Limit of Saturation:  Thermodynamics, Self-Consistent Field Modeling and Experiment†

Langmuir ◽  
2008 ◽  
Vol 24 (4) ◽  
pp. 1308-1317 ◽  
Author(s):  
Joris Sprakel ◽  
Nicolaas A. M. Besseling ◽  
Martien A. Cohen Stuart ◽  
Frans A. M. Leermakers
Keyword(s):  
Capillary Adhesion ◽  
Field Modeling ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field

scholarly journals Mechanical Unfolding of a Homopolymer Globule Studied by Self-Consistent Field Modeling

2009 ◽  
Vol 42 (14) ◽  
pp. 5360-5371 ◽  
Author(s):  
Alexey A. Polotsky ◽  
Marat I. Charlaganov ◽  
Frans A. M. Leermakers ◽  
Mohamed Daoud ◽  
Oleg V. Borisov ◽  
...  
Keyword(s):  
Field Modeling ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field

A self-consistent field study of a hydrocarbon droplet at the air–water interface

2012 ◽  
Vol 14 (14) ◽  
pp. 4917 ◽  
Author(s):  
Emilia Hilz ◽  
Frans A. M. Leermakers ◽  
Arnoldus W. P. Vermeer
Keyword(s):  
Field Study ◽  
Water Interface ◽  
Consistent Field ◽  
Air Water Interface ◽  
Self Consistent ◽  
Self Consistent Field

scholarly journals Self-Consistent Field Modeling of Pulling a Test-Chain away from or Pushing It into a Polymer Adsorption Layer

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1684 ◽  
Author(s):  
Fransicus A.M. Leermakers
Keyword(s):  
Adsorption Layer ◽  
Local Density ◽  
Polymer Concentration ◽  
Critical Force ◽  
Average Chain Length ◽  
Single Chain ◽  
Field Modeling ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field

We consider single chain force measurements to unravel characteristics of polymers at interfaces and to determine parameters that control adsorption or probe layer characteristics that are difficult to access otherwise. The idea is to have at the tip of an atomic force microscope (AFM), a probe chain and measure its behaviour near interfaces by pushing it to, or pulling it away from it. The self-consistent field modeling of this reveals that in the pulling mode—i.e., when the chain has an affinity for the surface—a typically inhomogeneous flower-like conformation forms with an adsorbed ’pancake’ and a stretched stem (tether) from the surface to the tip of the AFM. When about half the segments is in the tether it snaps loose in a first-order like fashion. The critical distance of the end-point from the surface and the critical force are experimentally accessible. Details of this transition depend on the surrounding of the test chain. Inversely, and this opens up many possibilities, the test chain reports about its surroundings. Our focus is on the classical case of homopolymers at interfaces. Pulling experiments may reveal the adsorption strength, the (average) chain length and/or the polymer concentration of the freely dispersed/adsorbed polymers. When the test-chain is non-adsorbing we envision that pushing this test-chain into the adsorption layer reports about various layer characteristics such as the layer thickness and (local) density. Moreover, when the test-chain has a length longer than the entanglement length, we can imagine that non-trivial dynamical properties of loops and tails may be scrutinised.

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