Electrophoretic fingerprinting of a single acid site polymer colloid latex

Marlow, Bruce J.; Rowell, Robert L.

doi:10.1021/la00060a013

Cited by 40 publications

(28 citation statements)

References 5 publications

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“…This displacement can be produced either by ionic adsorption or by a hairy layer. This hairy layer has been postulated by numerous authors (7,15,(33)(34)(35) in polystyrene particles to explain the anomalous behavior of electrokinetic data. This layer is supposed to be extended at low salt concentration and to collapse as the ionic concentration is increased.…”

Section: Figmentioning

confidence: 80%

Colloidal Stability of Polymer Colloids with Variable Surface Charge

Puertas

Nieves

1999

Journal of Colloid and Interface Science

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Section: Figmentioning

confidence: 80%

Colloidal Stability of Polymer Colloids with Variable Surface Charge

Puertas

Nieves

1999

Journal of Colloid and Interface Science

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“…29 Other explanations have been proposed, including surface conductance effects or preferential ion adsorption, 30 while Zhao et al 31 have described, on the basis of photon correlation spectroscopy data, the surface layer on particles of the type and surface charge density used here as being, in any case, relatively flat. In our work, the decision was made to use the particles as received rather than to, for example, heat them under pressure to above the glass transition temperature of polystyrene so as to desorb or adsorb the "hairy" chains.…”

Section: Resultsmentioning

confidence: 99%

Flocculation of Model Latex Particles by Chitosans of Varying Degrees of Acetylation

and

Hearn

2000

Langmuir

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A series of chitosan samples spanning a wide range of molecular weights have been homogeneously acetylated to varying degrees and characterized. These have been used to flocculate a well-characterized "model colloid" polymer latex. The optimum flocculation concentrations have been identified using both residual turbidity and initial-rate methods. A charge neutralization mechanism with an enhancement of rate by a "charge patch" effect is shown to operate while both degree of acetylation and molecular weight can have an effect upon the optimum flocculation concentration.

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“…Even if the geometrical dimensions are well defined the surface electrical properties are poorly understood. The electrical properties of latex particles have been investigated mainly by microelectrophoresis (1)(2)(3)(4)(5)(6)(7) and electrical conductivity measurements (8 -13), and in some cases dielectric response has been used also (14 -21). Comparison between the experimental results and standard theories based on the Gouy-Chapman Poisson-Boltzmann formalism shows unexpected anomalies.…”

Section: Introductionmentioning

confidence: 99%