Polyelectrolytes surfactant complex

L.W. Wang and N.F Hu, Electrochemistry and electrocatalysis with myoglobin in biomembrane-like DHP-PDDA polyelectrolyte-surfactant complex films. J. Colloid Interface Sci. 236, 166—172 (2001). 

In addition to the studies in the volume, the adsorption properties of the polyelectrolyte-surfactant complexes at the air-water interface have also been... 

H. Ritacco, P.A. Albouy, A. Bhattacharyya, and D. Langevin Influence of the Polymer Backbone Rigidity on Polyelectrolyte-Surfactant Complexes at the AirAVater Interface. Phys. Chem. Chem. Phys. 2, 5243 (2000). 

C. Monteux, C.E. WiUiams, J. Meunier, O. Anthony, and V. Bergeron Adsorption of Oppositely Charged Polyelectrolyte/Surfactant Complexes at the Air/Water Interface Formation of Interfacial Gels. Langmuir 20, 57 (2004). 

Keywords Polyelectrolyte-surfactant complexes Polyelectrolyte-polyelectrolyte complexes Polyelectrolyte-colloid complexes Polyelectrolyte-multilayers Polyelectrolyte nanoparticles Retinoic acid... 

The complexation of polyelectrolyte with surfactants, which include numerous low and medium weight amphiphiles as well as lipids, has been investigated for many years nearly exclusively in solution as reviewed by Goddard [112]. Since 1994, starting with work by Antonietti et al. [15], polyelectrolyte-surfactant complexes (PE-surfs) in the solid state have also become of increasing interest. For some reviews see [1, 4-7, 113]. 

A variational theory which includes all these different contributions was recently proposed and applied for completely stretched polyelectrolyte stars (so-called porcupines ) [203, 204]. As a result, the effective interaction V(r) was very soft, mainly dominated by the entropy of the counterions inside the coronae of the stars supporting on old idea of Pincus [205]. If this pair potential is used as an input in a calculation of a solution of many stars, a freezing transition was found with a variety of different stable crystal lattices including exotic open lattices [206]. The method of effective interactions has the advantage to be generalizable to more complicated complexes which are discussed in this contribution-such as oppositely charged polyelectrolytes and polyelectrolyte-surfactant complexes-but this has still to be worked out in detail. 

Figure 15 Undulated phases of different polyelectrolyte/surfactant complexes, (a) Cylinder-phase. Reproduced from [169] with permission. 1995 Wiley-VCH. (b) Mattress-phase, (c) Egg-carton phase [167]. Reproduced from [167] with permission of Academic Press...

H. Hoffmann, O. El-Seoud, G. Huber and R. Bocher, Polyelectrolyte-Surfactant-Complexes, in Integration of Fundamental Polymer Science and Technology (eds. P. J. Lemstra and L, A. Kleintjens), Elsevier Applied Science, London, 1988, Vol. 2, p. 317. 

The situation with surfaces precoated with polyelectrolytes and no polyelectrolytes present in solution is preferred when studying association between surface-bound polyelectrolytes and surfactants, as relevant for e.g. cleaning processes. This situation, which is discussed in Sec. VI, is simpler to study and understand as compared to the case with polyelectrolytes present in bulk solution, since adsorption of sparingly soluble bulk polyelectrolyte-surfactant aggregates is avoided. The more complex situation with adsorbing polyelectrolyte-surfactant complexes is addressed in Sec. VII. 

At surfactant concentrations above the equivalent point (>5 x 10 4 mol dm 3) the A curves in the presence of the polyion resemble the behavior of the curve in pine surfactant solutions. They show a break at the so-called apparent critical micellization concentration, cmc [16,42], This term is usually used for characterizing the formation of free surfactant micelles in the presence of the polymeric component. The cmc is higher than the ordinary cmc due to the formation of polyelectrolyte-surfactant complex at lower surfactant concentrations. The bound surfactant ions are not available for... 

Skerjanc J, Kogej K. Electrical transport in polyelectrolyte-surfactant complex solutions at various degrees of complexation. In Schmitz KS, ed. Macroion Characterization. From Dilute Solutions to Complex Fluids. Washington ACS, 1994 268-275. 

Kogej K, Skerjanc J. Hydrodynamic investigations of polyelectrolyte-surfactant complexes in aqueous solutions. Acta Chim Slov 1999 46 481-492. 

Polyelectrolyte-Surfactant Complexes at the Air-Water Interface Influence of the Polymer Backbone Rigidity... 

Antonietti M, Conrad J, Thiinemann A. 1994. Polyelectrolyte surfactant complexes a new type of solid, mesomorphous material. Macromolecules 27 6007 6011. 

Thunemann AF. 2002. Polyelectrolyte surfactant complexes (synthesis, structure and materials aspects). Prog Polym Sci 27 1473 1572. 

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