High ionic strength electrokinetics of melamine-formaldehyde latex

Marek Kosmulski; Per Dahlsten; Piotr Próchniak; Jarl B. Rosenholm

doi:10.1016/j.jcis.2006.05.052

High ionic strength electrokinetics of melamine-formaldehyde latex

Marek Kosmulski, Per Dahlsten, Piotr Próchniak, Jarl B. Rosenholm

Laboratory of Molecular Science and Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

8 Citations (Scopus)

Abstract

The electrokinetic potential of melamine-formaldehyde latex at high ionic strengths was measured by means of two different instruments. The present study confirms that the ζ potentials in 1 M 1-1 electrolyte solutions can be as high as ±20 mV. The IEP of latex at low ionic strengths was at pH 11. The increase in the electrolyte concentration induced a shift in the IEP to low pH for all studied salts, and this indicates specific adsorption of the anions. The magnitude of the shift depends chiefly on the nature of the anion and increases in the series Cl < NO3 = Br < I, and the nature of the cation (Li, Na, K, Cs) plays a rather insignificant role. © 2006 Elsevier Inc. All rights reserved.

Original language	English
Pages (from-to)	538-541
Number of pages	4
Journal	Journal of Colloid and Interface Science
Volume	301
Issue number	2
DOIs	https://doi.org/10.1016/j.jcis.2006.05.052
Publication status	Published - 2006
MoE publication type	A1 Journal article-refereed

Keywords

HSAB principle
Ionic strength
Isoelectric point
Latex
Zeta potential

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10.1016/j.jcis.2006.05.052

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title = "High ionic strength electrokinetics of melamine-formaldehyde latex",

abstract = "The electrokinetic potential of melamine-formaldehyde latex at high ionic strengths was measured by means of two different instruments. The present study confirms that the ζ potentials in 1 M 1-1 electrolyte solutions can be as high as ±20 mV. The IEP of latex at low ionic strengths was at pH 11. The increase in the electrolyte concentration induced a shift in the IEP to low pH for all studied salts, and this indicates specific adsorption of the anions. The magnitude of the shift depends chiefly on the nature of the anion and increases in the series Cl < NO3 = Br < I, and the nature of the cation (Li, Na, K, Cs) plays a rather insignificant role. {\textcopyright} 2006 Elsevier Inc. All rights reserved.",

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T1 - High ionic strength electrokinetics of melamine-formaldehyde latex

AU - Kosmulski, Marek

AU - Dahlsten, Per

AU - Próchniak, Piotr

AU - Rosenholm, Jarl B.

PY - 2006

Y1 - 2006

N2 - The electrokinetic potential of melamine-formaldehyde latex at high ionic strengths was measured by means of two different instruments. The present study confirms that the ζ potentials in 1 M 1-1 electrolyte solutions can be as high as ±20 mV. The IEP of latex at low ionic strengths was at pH 11. The increase in the electrolyte concentration induced a shift in the IEP to low pH for all studied salts, and this indicates specific adsorption of the anions. The magnitude of the shift depends chiefly on the nature of the anion and increases in the series Cl < NO3 = Br < I, and the nature of the cation (Li, Na, K, Cs) plays a rather insignificant role. © 2006 Elsevier Inc. All rights reserved.

AB - The electrokinetic potential of melamine-formaldehyde latex at high ionic strengths was measured by means of two different instruments. The present study confirms that the ζ potentials in 1 M 1-1 electrolyte solutions can be as high as ±20 mV. The IEP of latex at low ionic strengths was at pH 11. The increase in the electrolyte concentration induced a shift in the IEP to low pH for all studied salts, and this indicates specific adsorption of the anions. The magnitude of the shift depends chiefly on the nature of the anion and increases in the series Cl < NO3 = Br < I, and the nature of the cation (Li, Na, K, Cs) plays a rather insignificant role. © 2006 Elsevier Inc. All rights reserved.

KW - HSAB principle

KW - Ionic strength

KW - Isoelectric point

KW - Latex

KW - Zeta potential

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DO - 10.1016/j.jcis.2006.05.052

M3 - Article

SN - 0021-9797

VL - 301

SP - 538

EP - 541

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

IS - 2

ER -

High ionic strength electrokinetics of melamine-formaldehyde latex

Abstract

Keywords

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