✍ Scribed by Lena Sjöström; Torbjörn Åkesson
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The interaction between one charged surface with terminally determined by surface force-distance measurements (5) or grafted polyelectrolyte chains and one similarly charged surface with the osmotic stress technique (6).
An alternative way to obtain a deeper understanding of the simulations. It is found that the force between the surfaces differs role played by polyelectrolytes in colloidal systems is to consignificantly from the forces obtained in symmetric systems. Due struct a theoretical model of the system and investigate how to entropic contributions the counterions penetrate into the halfthe interaction depends on specific parameters. The advantage cell containing polyelectrolyte, giving rise to an attractive force with a theoretical approach is that it is, in principle, easy to component of considerable strength between the subsystems. This study how a system responds to a specific disturbance, without force is affected by the chain structure of the polyelectrolyte and becomes more attractive with increasing flexibility. Asymptotic any interference due to variations of other parameters, which behavior, as well as salt dependence, of the surface force is estiis often the case in an experimental situation. If the model mated by mean field calculations on a related model system. Longis realistic and contains the main features of the system, the range attraction in asymmetric systems has recently been observed theoretical results predict the qualitatively correct behaviors. experimentally by surface force-distance measurements. ᭧ 1996 However, even with a simplified model it is often impossible Academic Press, Inc.
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