Polyelectrolyte adsorption onto planar surfaces: a study by streaming potential and ellipsometry measurements

Schwarz, Simona; Eichhorn, K.‐J.; Wischerhoff, Erik; Laschewsky, André

doi:10.1016/s0927-7757(99)00289-7

Cited by 75 publications

(44 citation statements)

References 19 publications

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“…(20) with the coupling constant K = 3.5 (taking the value of adsorption constant k a calculated from Eq. (16) by considering that the adsorption layer thickness δ a equals the particle diameter and δ m = 1 nm) reflect well the empirical data for the entire range of times.…”

Section: Kinetics Of Colloid Particles Depositionsupporting

confidence: 63%

Characterization of poly(ethylene imine) layers on mica by the streaming potential and particle deposition methods

Adamczyk

Michna

Szaraniec

et al. 2007

Journal of Colloid and Interface Science

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Section: Kinetics Of Colloid Particles Depositionsupporting

confidence: 63%

Characterization of poly(ethylene imine) layers on mica by the streaming potential and particle deposition methods

Adamczyk

Michna

Szaraniec

et al. 2007

Journal of Colloid and Interface Science

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“…That is also valid for adsorption of polyelectrolytes, as shown e.g. by Schwarz et al 25 for PDADMAC and PEI adsorption on silica and by Shin and coworkers 26 for PDADMAC adsorption on alumina, being confirmed by the results obtained in this study. Additionally, it is shown that the observed shift of the isoelectric point depends on the ionic strength.…”

Section: Effect Of Ionic Strengthsupporting

confidence: 91%

Electrokinetic Study of Bovine Serum Albumin Adsorption on Previously Formed PAH/PSS Multilayer

Đapić¹,

Kovačević²

2011

Croat. Chem. Acta

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Abstract. Layer-by-layer structures (e.g. polyelectrolyte multilayers and protein-polyelectrolyte multilayers) play a very important role in surface modification processes. In the present study, electrokinetic measurements were applied for the investigation of poly(allylamine hydrochloride)/poly(sodium 4-styrenesulphonate) (PAH/PSS) multilayer formation, with PAH being a terminal layer, as a function of pH. Additionally, the effect of supporting electrolyte (KCl) concentration on multilayer formation was tested. Silica particles were used as the solid substrate. Furthermore, the adsorption of bovine serum albumin (BSA) on previously formed multilayer was examined as a function of pH and BSA concentration. It was confirmed that the electrokinetic measurements are suitable for monitoring the formation of various multilayers. In all investigated systems the process of multilayer formation was found to depend on conditions (ionic strength and pH) under which the multilayer was formed. Moreover, in the case of BSA, the adsorption on previously formed multilayer BSA concentration also plays a significant role. (doi: 10.5562/cca1822)

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“…Surplus polymer solution adhering to the support is removed by simple washing. Under proper conditions, polymeric material with more than the stoichiometric number of charges (relative to the substrate) is adsorbed, so that the sign of the surface charge is reversed [31][32][33][34] . In consequence, when the substrate is exposed to a second solution containing a polyion of opposite charge, an additional polyion layer is adsorbed.…”

Section: The Methods Of Electrostatic Layer-by-layer Selfassembly (Esa)mentioning

confidence: 99%

“…In any case, molar mass effects, pH and ionic strength may influence the kinetics, and adsorption kinetics seem to be transport-limited only in the very beginning of the process 129) . In fact, several studies indicate that polyion adsorption is a twostep process: polymer chains are anchored to the surface by some segments during a fast initial step, and then relax to dense packing during a slower second step 29,34,63,85,191,306,388,426) . This second step may take much time.…”

Section: Experimental Conditions and Parametersmentioning

confidence: 99%

Ultrathin polymer coatings by complexation of polyelectrolytes at interfaces: suitable materials, structure and properties

Bertrand

Jonas

Laschewsky³

et al. 2000

Macromol. Rapid Commun.

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1,168

1,184

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A bit of historyThe key role of surfaces for many material properties as well as for many biological processes has been recognized now. Therefore, new strategies aim at the tailoring of the material's surface only -or of a thin surface layer, respectively -, while preserving the bulk properties of the underlying support. Particular emphasis has been given to the surface modification by polymers, in an attempt to extend the known versatility of polymer bulk materials to ultrathin films and coatings, and to prepare bulk-surface composite materials. The self-organization of polymers has been increasingly explored for the preparation of well-defined surfaces and interfaces in recent years, extending the use of the established methods of low molar mass compounds (for comparative reviews, see ref. 1-3)). With such techniques, polymer films are formed spontaneously on substrates, due to balanced interactions between substrate, polymer (or its precursor) and medium. Typically, very thin, often monomolecular layers are produced. Repetitive deposition steps provide a precise control over the total thickness of the coatings, in the range from a few angstroms up to the micrometer range. Moreover, the step-by-step procedures allow for a fine structuring in the third dimension. In addition to the preparation of uniform and homogeneous coatings, gratings, gradients or steps of defined height in molecular dimensions can be easily constructed.The most recent of the self-organization techniques is the alternating physisorption of oppositely charged polyelectrolytes, the so-called "layer-by-layer" method or "electrostatic self-assembly" (ESA) [3][4][5][6][7][8][9][10] . Although some early, singular studies of self-assembly by alternating adsorption of oppositely charged polyions are reported [11][12][13] , a practical method for ESA was developed Feature Article: The article presents the state-of-the-art of alternating physisorption of oppositely charged polyelectrolytes, the so-called "layer-by-layer" method or "electrostatic self-assembly" (ESA), for the preparation of thin polymer coatings. In comparison to other, more established self-organization techniques, this recent method is distinguished by its simplicity, versatility, and speed. In particular, the tendency for self-healing is unique. Emphasis is given to the role of the molecular structure of the polyelectrolytes, and to the nature of the support. Also, various parameters for the preparation of multilayer films are highlighted, which are very important due to the kinetic control of the build-up process. The structure of the resulting coatings, their quality and stability, chemical reactions in the films, and potential applications are discussed.Macromol. Rapid Commun. 21, No. 7

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Polyelectrolyte adsorption onto planar surfaces: a study by streaming potential and ellipsometry measurements

Cited by 75 publications

References 19 publications

Characterization of poly(ethylene imine) layers on mica by the streaming potential and particle deposition methods

Characterization of poly(ethylene imine) layers on mica by the streaming potential and particle deposition methods

Electrokinetic Study of Bovine Serum Albumin Adsorption on Previously Formed PAH/PSS Multilayer

Ultrathin polymer coatings by complexation of polyelectrolytes at interfaces: suitable materials, structure and properties

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