Effect of linear nonionic polymer additives on the kinetic stability of dispersions of poly(diallyldimethylammonium chloride)/sodium dodecylsulfate nanoparticles

Katalin Pojják, Edit Fegyver, Róbert Mészáros

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this article, the impact of different neutral polymers on the kinetic stability of charge-stabilized poly(diallyldimethylammonium chloride) (PDADMAC)/sodium dodecylsulfate (SDS) colloidal dispersions is analyzed using dynamic light scattering, electrophoretic mobility, turbidity, and coagulation kinetics measurements. Poly(ethyleneoxide) (PEO), poly(vinylpyrrolidone) (PVP), and dextran of comparable molecular masses as well as a higher-molecular-weight dextran sample were tested as nonionic additives. The light scattering and mobility data indicate that the PEO and PVP molecules may adsorb on the surface of the PDADMAC/SDS nanoparticles formed in the presence of excess surfactant. The primary effect of these additives is manifested in enhanced coagulation of the PDADMAC/SDS nanoparticles due to bridging at lower polymer concentrations and depletion flocculation at higher polymer concentrations. These findings are in sharp contrast to the earlier published effect of the same nonionic polymers on the poly(ethyleneimine) (PEI)/SDS colloidal dispersions, which can be sterically stabilized at appropriate PEO or PVP concentrations. However, the adsorption of the investigated dextran samples is negligible on the PDADMAC/SDS nanoparticles. Therefore, dextran molecules may cause only depletion flocculation in the PDADMAC/SDS system in the vicinity of the critical overlap concentration.

Original languageEnglish
Pages (from-to)10077-10086
Number of pages10
JournalLangmuir
Volume29
Issue number32
DOIs
Publication statusPublished - Aug 13 2013

Fingerprint

sodium chlorides
Sodium chloride
Polyethylene oxides
Dispersions
dextrans
Dextran
Polymers
Sodium
Nanoparticles
Dextrans
nanoparticles
Kinetics
kinetics
polymers
Flocculation
coagulation
Coagulation
depletion
light scattering
Electrophoretic mobility

ASJC Scopus subject areas

  • Electrochemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Science(all)
  • Spectroscopy

Cite this

Effect of linear nonionic polymer additives on the kinetic stability of dispersions of poly(diallyldimethylammonium chloride)/sodium dodecylsulfate nanoparticles. / Pojják, Katalin; Fegyver, Edit; Mészáros, Róbert.

In: Langmuir, Vol. 29, No. 32, 13.08.2013, p. 10077-10086.

Research output: Contribution to journalArticle

@article{db36ff32027e4b1f9a73e8a64f719efe,
title = "Effect of linear nonionic polymer additives on the kinetic stability of dispersions of poly(diallyldimethylammonium chloride)/sodium dodecylsulfate nanoparticles",
abstract = "In this article, the impact of different neutral polymers on the kinetic stability of charge-stabilized poly(diallyldimethylammonium chloride) (PDADMAC)/sodium dodecylsulfate (SDS) colloidal dispersions is analyzed using dynamic light scattering, electrophoretic mobility, turbidity, and coagulation kinetics measurements. Poly(ethyleneoxide) (PEO), poly(vinylpyrrolidone) (PVP), and dextran of comparable molecular masses as well as a higher-molecular-weight dextran sample were tested as nonionic additives. The light scattering and mobility data indicate that the PEO and PVP molecules may adsorb on the surface of the PDADMAC/SDS nanoparticles formed in the presence of excess surfactant. The primary effect of these additives is manifested in enhanced coagulation of the PDADMAC/SDS nanoparticles due to bridging at lower polymer concentrations and depletion flocculation at higher polymer concentrations. These findings are in sharp contrast to the earlier published effect of the same nonionic polymers on the poly(ethyleneimine) (PEI)/SDS colloidal dispersions, which can be sterically stabilized at appropriate PEO or PVP concentrations. However, the adsorption of the investigated dextran samples is negligible on the PDADMAC/SDS nanoparticles. Therefore, dextran molecules may cause only depletion flocculation in the PDADMAC/SDS system in the vicinity of the critical overlap concentration.",
author = "Katalin Pojj{\'a}k and Edit Fegyver and R{\'o}bert M{\'e}sz{\'a}ros",
year = "2013",
month = "8",
day = "13",
doi = "10.1021/la4021542",
language = "English",
volume = "29",
pages = "10077--10086",
journal = "Langmuir",
issn = "0743-7463",
publisher = "American Chemical Society",
number = "32",

}

TY - JOUR

T1 - Effect of linear nonionic polymer additives on the kinetic stability of dispersions of poly(diallyldimethylammonium chloride)/sodium dodecylsulfate nanoparticles

AU - Pojják, Katalin

AU - Fegyver, Edit

AU - Mészáros, Róbert

PY - 2013/8/13

Y1 - 2013/8/13

N2 - In this article, the impact of different neutral polymers on the kinetic stability of charge-stabilized poly(diallyldimethylammonium chloride) (PDADMAC)/sodium dodecylsulfate (SDS) colloidal dispersions is analyzed using dynamic light scattering, electrophoretic mobility, turbidity, and coagulation kinetics measurements. Poly(ethyleneoxide) (PEO), poly(vinylpyrrolidone) (PVP), and dextran of comparable molecular masses as well as a higher-molecular-weight dextran sample were tested as nonionic additives. The light scattering and mobility data indicate that the PEO and PVP molecules may adsorb on the surface of the PDADMAC/SDS nanoparticles formed in the presence of excess surfactant. The primary effect of these additives is manifested in enhanced coagulation of the PDADMAC/SDS nanoparticles due to bridging at lower polymer concentrations and depletion flocculation at higher polymer concentrations. These findings are in sharp contrast to the earlier published effect of the same nonionic polymers on the poly(ethyleneimine) (PEI)/SDS colloidal dispersions, which can be sterically stabilized at appropriate PEO or PVP concentrations. However, the adsorption of the investigated dextran samples is negligible on the PDADMAC/SDS nanoparticles. Therefore, dextran molecules may cause only depletion flocculation in the PDADMAC/SDS system in the vicinity of the critical overlap concentration.

AB - In this article, the impact of different neutral polymers on the kinetic stability of charge-stabilized poly(diallyldimethylammonium chloride) (PDADMAC)/sodium dodecylsulfate (SDS) colloidal dispersions is analyzed using dynamic light scattering, electrophoretic mobility, turbidity, and coagulation kinetics measurements. Poly(ethyleneoxide) (PEO), poly(vinylpyrrolidone) (PVP), and dextran of comparable molecular masses as well as a higher-molecular-weight dextran sample were tested as nonionic additives. The light scattering and mobility data indicate that the PEO and PVP molecules may adsorb on the surface of the PDADMAC/SDS nanoparticles formed in the presence of excess surfactant. The primary effect of these additives is manifested in enhanced coagulation of the PDADMAC/SDS nanoparticles due to bridging at lower polymer concentrations and depletion flocculation at higher polymer concentrations. These findings are in sharp contrast to the earlier published effect of the same nonionic polymers on the poly(ethyleneimine) (PEI)/SDS colloidal dispersions, which can be sterically stabilized at appropriate PEO or PVP concentrations. However, the adsorption of the investigated dextran samples is negligible on the PDADMAC/SDS nanoparticles. Therefore, dextran molecules may cause only depletion flocculation in the PDADMAC/SDS system in the vicinity of the critical overlap concentration.

UR - http://www.scopus.com/inward/record.url?scp=84881606645&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84881606645&partnerID=8YFLogxK

U2 - 10.1021/la4021542

DO - 10.1021/la4021542

M3 - Article

C2 - 23869814

AN - SCOPUS:84881606645

VL - 29

SP - 10077

EP - 10086

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 32

ER -