SANS study of colloidal aggregates of silicon tetraethoxide in basic ethanol/water solutions

M. V. Avdeev, V. L. Aksenov, J. Kohlbrecher, L. Rosta

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Data of small-angle neutron scattering from colloidal aggregates of silicon tetraethoxide (TEOS) in basic ethanol/water solutions are presented. Changes in the structure of the aggregates were followed for different H 2O:TEOS molar ratios (w) within the interval from 0.5 to 10. Two scattering levels are detected. The first one (< 10nm) corresponds to the diffusive surface of the aggregates whose characteristics change with w-ratio. The second level reflects the formation of large secondary associations, which have a fractal dimension decreasing monotonously from 2.2 to 1.0 with increasing w-ratio.

Original languageEnglish
Pages (from-to)e905-e908
JournalPhysica B: Condensed Matter
Volume350
Issue number1-3 SUPPL. 1
DOIs
Publication statusPublished - Jul 15 2004

Keywords

  • Branched polymer
  • Colloidal solution
  • Silicon tetraethoxide
  • Small-angle neutron scattering

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'SANS study of colloidal aggregates of silicon tetraethoxide in basic ethanol/water solutions'. Together they form a unique fingerprint.

  • Cite this