Adsorption of polyacrylamide on solid surfaces. Kinetics of the establishment of adsorption equilibrium

Pefferkorn, E.; Carroy, A.; Varoqui, R.

doi:10.1021/ma00153a033

Cited by 55 publications

(26 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Adsorption experiment (44). Simultaneous determination of the amount of polymer adsorbed and its concentration in solution is difficult since the rate of adsorption on a bare surface is rapid and usually cannot be recorded.…”

Section: Experimental System and Methodologymentioning

confidence: 99%

“…6 has previously been interpreted on the basis of the Langmuir model assuming two types of kinetic to be operative during the adsorption process (44). However, no clear explanation was proposed to account for the experimental results and only an additional resistance to interfacial transfer offered by the diffuse layer at high segment density was considered to further limit the adsorption rate.…”

Section: Kinetics Of Adsorptionmentioning

confidence: 99%

See 1 more Smart Citation

Polyacrylamide at Solid/Liquid Interfaces

Pefferkorn

1999

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

Section: Experimental System and Methodologymentioning

confidence: 99%

Section: Kinetics Of Adsorptionmentioning

confidence: 99%

Polyacrylamide at Solid/Liquid Interfaces

Pefferkorn

1999

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…In any case, the attachment sites are distributed all along the chain backbone. The adsorption of polyelectrolytes on a solid surface from aqueous solutions has been extensively investigated [1], both theoretically [2] and experimentally [3]: in particular, the adsorption kinetics [4] and the volume fraction profile [5] have been determined. The effect of salt has also been studied; for instance, it has been shown (among others) that the amount of adsorbed poly(styrene sulfonate sodium salt) is low in salt-free solutions but increases with the addition of salt.…”

Section: Introductionmentioning

confidence: 99%

Complexation and distribution of counterions in a grafted polyelectrolyte layer

Tran

Auroy

2001

The European Physical Journal E

View full text Add to dashboard Cite

The complexation and the distribution of various cations, bound to a poly(styrene sulfonate) brush, have been investigated using infra-red spectroscopy and neutron reflectivity. Small counterions (like tetremethylammonium) are distributed throughout the brush in such a way that a local electroneutrality is ensured. They also exchange readily with other bulk small cations. On the other hand, model polycations are irreversibly trapped to the brush despite a relative small number of ionic bonds involved in the complexation. These complexed polycations are localized at the outer border of the brush, forming a macromolecular barrier. However, this spatial segregation does not allow the buildup of polyelectrolyte multilayers. Cationic surfactants are associated stoichiometrically with the brush sulfonates but unlike small counterions, this complexation is "irreversible" and induces a restructuring of the polymer interface.

show abstract

“…In all instances, the amplitude of the potential decreases as the salt concentration increases and reaches a plateau value. This reduction in the amplitude of the potential results from the reduction of the mutual repulsion between the polyelectrolyte segments [6][7][8][9]. In addition, Figs 1 and 2 indicate that the potential amplitude variation depend on the nature of salt and polyelectrolyte.…”

Section: Salt Effect On the Polyelectrolyte Surface Chargementioning

confidence: 99%

Surface charges of anionic and cationic polyelectrolytes and their effects on the nucleation and the growth of CaCO3 crystals

Jada

Verraes²,

Aue³

et al. 2009

E-Polymers

View full text Add to dashboard Cite

Streaming Induced Potential (SIP) of polystyrene sulfonate, PSS, and poly(ethylenimine), PEI, in the presence of monovalent (NaCl) and divalent (CaCl 2 ) electrolytes, were measured at ambient temperature. The data indicate that screening of polyelectrolyte surface charge, i.e. the reduction of SIP amplitude, is more efficient by divalent CaCl 2 , as compared to monovalent NaCl electrolytes. The screening of polyelectrolyte surface charge leads to reduction of the mutual repulsion between the polyelectrolyte segments. In the case of CaCl 2 electrolyte, since PSS and PEI are, respectively, negatively and positively charged, sequestration of calcium ions by the polyelectrolyte leads to strong reduction of the free calcium ions concentration in the medium in the presence of the PSS when compared to the PEI. Further, the preparation of CaCO 3 particles through a precipitation reaction, at room temperature, by using PSS and PEI polyelectrolytes as crystal modifiers were investigated. The final CaCO 3 particles are found to result from the aggregation of nanocrystals, and have various shapes and sizes depending on polymer concentration and structure. It comes out that the properties of CaCO 3 particles prepared in the presence of the polymer are function of the interaction efficiency between the polymer-repeating units and the calcium ions. Such interaction is found to affect the free calcium ions concentration in the medium.

show abstract

Adsorption of polyacrylamide on solid surfaces. Kinetics of the establishment of adsorption equilibrium

Cited by 55 publications

References 4 publications

Polyacrylamide at Solid/Liquid Interfaces

Polyacrylamide at Solid/Liquid Interfaces

Complexation and distribution of counterions in a grafted polyelectrolyte layer

Surface charges of anionic and cationic polyelectrolytes and their effects on the nucleation and the growth of CaCO3 crystals

Contact Info

Product

Resources

About