Use of polysaccharide based surfactants to stabilize organically modified clay particles aqueous dispersion

Manja Kurečič, Majda Sfiligoj Smole, Karin Stana-Kleinschek

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Pure as well as organically modified clay minerals are widely applied particles in different research areas. For the incorporation of hydrophobic organically modified clay particles into the hydrogel matrix, a stable aqueous dispersion must be prepared. In this article we report on the stabilization of aqueous dispersions of hydrophobic organically modified clay particles by using a non-ionic polysaccharide-based surfactant system-Inutec SP1 (based on chicory inulin). Different concentrations of surfactants were tested. Properties of the particulate surfactant-stabilized aqueous colloidal system were determined by electrophoretic mobility and dynamic light scattering measurements. Determination of contact angles gave us insight into the particles' surface interaction ability with water and also some information regarding the conformation of adsorbed surfactant molecules on the particle surface. By using Inutec SP1, the wettability of clay particles was improved, particle size was reduced and consequently, enhancement of their dispersion ability in water-based systems was observed.

Original languageEnglish
Pages (from-to)687-694
Number of pages8
JournalCarbohydrate Polymers
Volume94
Issue number1
DOIs
Publication statusPublished - 15 Apr 2013
Externally publishedYes

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Keywords

  • Contact angle
  • Dispersion stability
  • DLS
  • Electrophoretic mobility
  • Inutec SP1 surfactant
  • Organically modified clay particles

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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