Complexes of surfactants with oppositely charged polymers at surfaces and in bulk

Bain, Colin D.; Claesson, Per M.; Langévin, D.; Mészáros, Róbert; Nylander, Tommy; Stubenrauch, Cosima; Titmuss, Simon; Klitzing, Regine von

doi:10.1016/j.cis.2010.01.007

Cited by 229 publications

(217 citation statements)

References 100 publications

(62 reference statements)

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“…The addition of polycations to an anionic surfactant was also studied and show basically the same general features as for the opposite charge combination. 7,25 The different examples for oppositely charged polyelectrolytes and polyanions show that beside general features there are many system specic effects. The most dominant factors affecting the surface tension are the ratio between surfactant and polyelectrolyte concentration, the all overall concentration and molecular parameters like charge density and bulkiness of the polyelectrolyte.…”

Section: Oppositely Charged Polyelectrolytes and Surfactants: Formatimentioning

confidence: 99%

Effect of polyelectrolytes on (de)stability of liquid foam films

Fauser

Klitzing

2014

Soft Matter

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The review addresses the influence of polyelectrolytes on the stabilisation of free-standing liquid foam films, which affects the stability of a whole macroscopic foam. Both the composition of the film surface and the stratification of the film bulk drives the drainage and the interfacial forces within a foam film.Beside synthetic polyelectrolytes also natural polyelectrolytes like cellulose, proteins and DNA are considered.

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Section: Oppositely Charged Polyelectrolytes and Surfactants: Formatimentioning

confidence: 99%

Effect of polyelectrolytes on (de)stability of liquid foam films

Fauser

Klitzing

2014

Soft Matter

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“…Many studies investigate effects of polyelectrolyte-surfactant mixtures on the surface tension and some of them have been carried out with cellulose based polyelectrolytes and oppositely charged surfactants, 5,[66][67][68]70,71,83,86,104,116,117 as such systems are for instance very important in detergency. The general picture is similar to that obtained with other polyelectrolytes (see Fig.…”

Section: Interfacial Aspectsmentioning

confidence: 99%

Complexes of oppositely charged polyelectrolytes and surfactants – recent developments in the field of biologically derived polyelectrolytes

2013

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We review the work done on complexes between biopolyelectrolytes such as ionically modified cellulose or chitosan and oppositely charged surfactants. Around equimolarity of the charges one typically observes precipitation but for other mixing ratios one may form long-time stable complexes, where structure and rheology depend on the mixing ratio, total concentration and the molecular constitution of the components. In addition, it may be the case that the structures are formed under non-equilibrium situations and therefore depend on the preparation path. The binding is shown to occur cooperatively and the micelles present often retain their shape irrespective of the complexation. However, the rather stiff biopolyelectrolytes may lead to an interconnection between different aggregates thereby forming a network with the corresponding rheological properties. In general, the structure and the properties of the aggregates are rather versatile and correspondingly one can create a wide range of different surfactant-biopolyelectrolyte systems by appropriately choosing the composition. This is very interesting as it allows for formulations with a large range of tuneable properties with ecologically friendly polyelectrolytes for many relevant applications.

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“…Polymer/surfactant mixtures (PS) have a wide range of industrial and technological applications and their specific behavior was studied at liquid/gas [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15], liquid/liquid [16][17][18][19][20][21][22][23][24][25][26][27], and liquid/solid interfaces [28][29][30]. In particular, this is clearly seen in metastable micrometer and sub-micrometer heterogenous disperse systems, such as foams [26,[31][32][33], emulsions [22,23,[33][34][35], and dispersions [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

The Use of Polymer and Surfactants for the Microencapsulation and Emulsion Stabilization

Sharipova¹,

Aidarova²,

Mutaliyeva³

et al. 2017

Colloids and Interfaces

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Polymer/surfactant mixtures have a wide range of industrial and technological applications, one of them being the use in microencapsulation and emulsion stabilization processes. These mixtures are able to form adsorption layers at the surface of oil droplets and so affect the emulsion stability, which depends on the polyelectrolyte/surfactant nature, concentrations ratio, method of the emulsification, etc. Polyelectrolytes alone show low surface activity in contrast to surfactants, which adsorb at the water/oil interface, making the droplets charged, but they are insufficient to stabilize emulsions. When an oppositely-charged polymer is added to the surfactant solution, a steric barrier is formed, which prevents coalescence and enhances the stability. The present review is devoted to the recent studies of the use of polymer/surfactant mixtures for the encapsulation of active ingredients and stabilization of single and double emulsions. Active ingredients are added to the oil phase prior to emulsification so that any subsequent dissolution of the core, like in other encapsulation protocols, can be omitted. By measuring the interfacial tension and dilational rheology it is possible to find optimum conditions for the emulsion formation and hence for encapsulation. Therefore, such systems have become a prominent approach for the encapsulation of active ingredients.

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Complexes of surfactants with oppositely charged polymers at surfaces and in bulk

Cited by 229 publications

References 100 publications

Effect of polyelectrolytes on (de)stability of liquid foam films

Effect of polyelectrolytes on (de)stability of liquid foam films

Complexes of oppositely charged polyelectrolytes and surfactants – recent developments in the field of biologically derived polyelectrolytes

The Use of Polymer and Surfactants for the Microencapsulation and Emulsion Stabilization

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