Layered solid particles as self-assembled films

I. Dékány, Tamás Haraszti

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Surface hydrophobization of clay minerals (kaolinite, illite, montmorillonite) and CaA1 double hydroxide by alkyl chains (n(c)= 12-16) was studied. Clay minerals are hydrophobized by cationic surfactants, while in the case of LDHs anionic surfactants are used as hydrophobizing agents. Quantitative information on hydrophobicity was obtained from adsorption isotherms. Wetting properties of hydrophobic products were characterized by heats of immersion measured in organic solvents. Those among hydrophobic layer silicates which are not wetted by water form self-assembled solid films on the surface of water. The compressibility of these was by studied by a Langmuir balance. The orientation and thickness of clay mineral layers applied to a glass surface were studied using X-ray diffraction and surface plasmon spectroscopy.

Original languageEnglish
Pages (from-to)391-401
Number of pages11
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume123-124
DOIs
Publication statusPublished - May 15 1997

Fingerprint

Clay minerals
clays
minerals
surfactants
Bentonite
Kaolin
Silicates
illite
kaolinite
Water
Anionic surfactants
Kaolinite
Cationic surfactants
montmorillonite
Hydrophobicity
hydrophobicity
Compressibility
Adsorption isotherms
Organic solvents
water

Keywords

  • Hydrophobization
  • Layer double hydroxide
  • Layer silicate
  • Self- assembled films
  • Surface plasmon spectroscopy
  • Wetting

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Layered solid particles as self-assembled films. / Dékány, I.; Haraszti, Tamás.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 123-124, 15.05.1997, p. 391-401.

Research output: Contribution to journalArticle

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