A thermoanalytical assessment of an organoclay

Yuri Park, Godwin A. Ayoko, Janos Kristof, Erzsébet Horváth, Ray L. Frost

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

High resolution thermogravimetric analysis (TG) has attracted much attention in the synthesis of organoclays and its applications. In this study, organoclays were synthesised through ion exchange of a single cationic surfactant for sodium ions, and characterised by methods including X-ray diffraction (XRD) and TG. The changes of surface properties in montmorillonite (MMT) and organoclays intercalated with surfactant were determined using XRD through the changes in the basal spacing. The TG was applied in this study to investigate more information of the configuration and structural changes in the organoclays with thermal decomposition. There are four different decompositions steps in differential thermogravimetric curves. The obtained TG steps are relevant to the arrangement of the surfactant molecules intercalated in MMT and the thermal analysis indicates the thermal stability of surfactant modified clays. This investigation provides new insights into the properties of organoclays and is important in the synthesis and processing of organoclays for environmental applications.

Original languageEnglish
Pages (from-to)1137-1142
Number of pages6
JournalJournal of Thermal Analysis and Calorimetry
Volume107
Issue number3
DOIs
Publication statusPublished - Mar 2012

Keywords

  • Cationic surfactant
  • Hexadecyltrimethylammonium bromide
  • Montmorillonites
  • Organoclay
  • Thermal analysis

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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