Novel nanocomplexes of hyperbranched poly(ethyleneimine), sodium dodecyl sulfate and dodecyl maltoside

Amália Mezei, R. Mészáros

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The aqueous complexes of poly(ethyleneimine) (PEI), sodium dodecyl sulfate (SDS) and dodecyl maltoside (C12G2) have been studied under dilute conditions using dynamic light scattering, electrophoretic mobility, surface tension and pH measurements. According to the surface tension data the complexation between PEI and C12G2 can be neglected while a strong interaction was detected between PEI and SDS. The charged nature and size of the PEI-SDS-C12G2 complexes vary in a similar manner with SDS concentration as for the PEI-SDS systems. At large excess of SDS a kinetically stable colloid dispersion of the compact PEI-SDS-C12G2 particles forms. The electrophoretic mobility measurements indicate that the charge reversal of the PEI molecules occurs at lower SDS concentrations in the presence than in the absence of dodecyl maltoside. The enhanced charge inversion of PEI affords a significant extension of the concentration range with kinetically stable dispersion of the polyelectrolyte-surfactant nanoparticles compared with the PEI-SDS system. The pH of the PEI-SDS-C12G2 mixtures also reveals a peculiar dependence on the surfactant concentration. These latter findings are explained by the synergistic binding of the ionic and non-ionic surfactants to both the uncharged and charged amine groups of the PEI. It can be concluded that the addition of sugar surfactants is an efficient way to increase the kinetic stability and manipulate the pH of the mixtures of oppositely charged weak polyelectrolytes and surfactants.

Original languageEnglish
Pages (from-to)586-592
Number of pages7
JournalSoft Matter
Volume4
Issue number3
DOIs
Publication statusPublished - 2008

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Polyetherimides
sodium sulfates
Sodium Dodecyl Sulfate
surfactants
Surface-Active Agents
Electrophoretic mobility
Polyelectrolytes
interfacial tension
Surface tension
dodecyl maltoside
aziridine
sugars
Nonionic surfactants
Colloids
Dynamic light scattering
Complexation
colloids
Sugars
amines
Amines

ASJC Scopus subject areas

  • Chemistry (miscellaneous)

Cite this

Novel nanocomplexes of hyperbranched poly(ethyleneimine), sodium dodecyl sulfate and dodecyl maltoside. / Mezei, Amália; Mészáros, R.

In: Soft Matter, Vol. 4, No. 3, 2008, p. 586-592.

Research output: Contribution to journalArticle

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