Adsorption of weak polyelectrolytes on highly charged surfaces. Poly(acrylic acid) on polystyrene latex with strong cationic groups

Blaakmeer, J.; Böhmer, M.R.; Stuart, M.A. Cohen; Fleer, G.J.

doi:10.1021/ma00210a028

Cited by 180 publications

(185 citation statements)

References 8 publications

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“…They expected a weak dependence on chain length at slightly higher pH values near pK 0 value and no dependence at high pH values. 21) This result matches well with the experimental data in this study.…”

Section: Effects Of Suspension Ph and Polymer Molecular Weight On Adssupporting

confidence: 92%

Effect of polymer molecular weight on adsorption and suspension rheology

Kim

Carty

2016

J. Ceram. Soc. Japan

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The adsorption of poly(acrylic acid) [PAA] on the surface of commercial ball clay was studied. The adsorption isotherm of PAAs with different molecular weights was determined at pH 6 and 9. The results showed that the amount of PAA adsorbed on clay was independent of molecular weight. Also, the adsorption amount was decreased with increased pH. However, the overall adsorption amount was lower than the range predicted by a model based upon the mineralogy of kaolinite. A kinetic study of PAA adsorption presented plausible displacement of initially adsorbed PAA. PAA adsorption on clay particles decreased the viscosity of suspensions. Clay suspensions showed the minimum viscosity with a sufficient coverage of particles with PAA necessary for stable suspensions. Optimum chain length of PAA was revealed for effective dispersion.

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Section: Effects Of Suspension Ph and Polymer Molecular Weight On Adssupporting

confidence: 92%

Effect of polymer molecular weight on adsorption and suspension rheology

Kim

Carty

2016

J. Ceram. Soc. Japan

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“…However, the measured power laws are weaker than our predictions. A simple power law fit of their salt dependence gives Γ ∼ c In experiments on annealed polyelectrolytes [5,8], the polymer charge can be tuned by the pH of the solution (eq. 18).…”

Section: Strong Polyelectrolytes: Effect Of Saltmentioning

confidence: 99%

“…The behavior then shifts continuously from the SR I to the SR II regimes. For example, Blaakmeer et al [5] used polyacrylic acid which is neutral (no dissociation) at low pH but becomes negatively charged (strong dissociation) at higher pH. As predicted by eq.…”

Section: Strong Polyelectrolytes: Effect Of Saltmentioning

confidence: 99%

Scaling Laws of Polyelectrolyte Adsorption

1998

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“…Therefore there is much scientific interest in the adsorption behavior of polyelectrolytes and polyampholytes. Polyelectrolytes in solution and in adsorption processes are well described experimentally and theoretically in the literature [6][7][8][9][10]. Single polyampholytic chains in solution were theoretically described by Higgs and Joanny [11].…”

Section: Introductionmentioning

confidence: 99%

Highly Regular Polyampholytic Structures Adsorbed Directly from Solution

Mahltig

Müller‐Buschbaum

Wolkenhauer

et al. 2001

Journal of Colloid and Interface Science

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This article concerns the adsorption of the diblock polyampholyte poly(methacrylic acid)-blockpoly((dimethylamino)ethyl methary-late) (PMAA-b-PDMAEMA) from aqueous solution on silicon substrates. The investigated polyampholyte is characterized by a small molecular weight around 15,000 g/mol and a big positively charged PDMAEMA block. The adsorbed amount determined by ellipsometry was str ongly influenced by the pH of the adsorption solution. Using dynamic light scattering polyampholytic structures with diameters around 50 nm were found in aqueous solution. The hydrodynamic diameter was hardly affected by changing the pH of the polymer solution. Analogous regular structures were also found by scanning force microscopy (SFM) and grazing incidence, small angle X-ray scattering (GISAXS) at the silicon surface after the adsorption process. While SFM provides a topographical image of a small part of the adsorbed polyampholytic layer; GISAXS was used to get a statistical description of the lateral surface structures. The adsorbed structures were highly regular and their sizes were nearly pH independent over a lar ge pH region. Only directly at the isoelectric point of the polyampholyte larger adsorbed structures were observed. Compared with earlier investigated PMAA-b-PDMAEMA systems we are now able to prepare highly regular polyampholytic structures at silicon surfaces. There are two kinds of interactions for the adsorbed micelles. First, the charged block of the chains is directly attracted to the substrate via electrostatic interactions, while the uncharged part of the chains is only hydrophobically attracted via the hydrophobic core of the adsorbed micelle.

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Adsorption of weak polyelectrolytes on highly charged surfaces. Poly(acrylic acid) on polystyrene latex with strong cationic groups

Cited by 180 publications

References 8 publications

Effect of polymer molecular weight on adsorption and suspension rheology

Effect of polymer molecular weight on adsorption and suspension rheology

Scaling Laws of Polyelectrolyte Adsorption

Highly Regular Polyampholytic Structures Adsorbed Directly from Solution

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