Features of Colloidal Aggregation in Tetraethoxysilane-Water-Ethanol Ternary Mixtures by Small-Angle Neutron Scattering

O. V. Tomchuk, M. V. Avdeev, O. I. Ivankov, L. A. Bulavin, V. L. Aksenov

Research output: Contribution to journalArticle

Abstract

Abstract—: The influence of the concentration of components in a tetraethyl orthosilicate (TEOS)–water–ethanol mixture on the growth of silicate aggregates in a basic environment is studied with small-angle neutron scattering. There is a general increase in the size of aggregates with an increase in the amount of both water and TEOS. At the same time, when the H2O : TEOS molar ratio is 2 : 1, the structure of the aggregates repeats, regardless of the TEOS concentration in the system. The scattering length density of the aggregates is found via hydrogen/deuterium isotopic substitution and contrast variation to analyze the possible inclusion of residual ethyl and hydroxyl groups into their structure.

Original languageEnglish
Pages (from-to)1122-1125
Number of pages4
JournalJournal of Surface Investigation
Volume13
Issue number6
DOIs
Publication statusPublished - Nov 1 2019

Fingerprint

Neutron scattering
Ethanol
Agglomeration
Water
Polymers
Silicates
Deuterium
Hydroxyl Radical
Hydrogen
Substitution reactions
Scattering
tetraethoxysilane

Keywords

  • colloidal aggregation
  • small-angle neutron scattering
  • sol-gel method
  • tetraethyl orthosilicate

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Features of Colloidal Aggregation in Tetraethoxysilane-Water-Ethanol Ternary Mixtures by Small-Angle Neutron Scattering. / Tomchuk, O. V.; Avdeev, M. V.; Ivankov, O. I.; Bulavin, L. A.; Aksenov, V. L.

In: Journal of Surface Investigation, Vol. 13, No. 6, 01.11.2019, p. 1122-1125.

Research output: Contribution to journalArticle

Tomchuk, O. V. ; Avdeev, M. V. ; Ivankov, O. I. ; Bulavin, L. A. ; Aksenov, V. L. / Features of Colloidal Aggregation in Tetraethoxysilane-Water-Ethanol Ternary Mixtures by Small-Angle Neutron Scattering. In: Journal of Surface Investigation. 2019 ; Vol. 13, No. 6. pp. 1122-1125.
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