Ageing effect on the SiO2-based inorganic-organic hybrid materials

M. Zaharescu, A. Jitianu, A. Braileanu, J. Madarász, G. Pokol

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

It is well known that SiO2-based inorganic-organic hybrid materials present significant differences due to the organic moieties bound to the inorganic network and to the preparation conditions. In the present work the ageing effect on the thermal stability of the SiO2-based inorganic-organic hybrid materials prepared using tetraethoxysilan (TEOS), triethoxymethylsilan (MTEOS), triethoxyvinylsilan (VTEOS), tetramethoxysilan (TMOS), trimethoxymethylsilan (MTMOS) and trimethoxyvinylsilan (VTMOS) was studied. TG/DTA-MS was used to study the decomposition process of the materials. The structural modifications of the materials during ageing were studied using spectral methods. The gels obtained starting with more reactive alkoxides, of methoxy-type, present more complex structures and are less stable during ageing.

Original languageEnglish
Pages (from-to)689-696
Number of pages8
JournalJournal of Thermal Analysis and Calorimetry
Volume64
Issue number2
DOIs
Publication statusPublished - 2001

Fingerprint

Hybrid materials
aging (materials)
Aging of materials
spectral methods
alkoxides
thermal analysis
thermal stability
gels
decomposition
Differential thermal analysis
preparation
Thermodynamic stability
Gels
Decomposition

Keywords

  • Ageing
  • Inorganic-organic hybrids
  • IR spectrometry
  • TG-DTA
  • Thermal analysis

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Ageing effect on the SiO2-based inorganic-organic hybrid materials. / Zaharescu, M.; Jitianu, A.; Braileanu, A.; Madarász, J.; Pokol, G.

In: Journal of Thermal Analysis and Calorimetry, Vol. 64, No. 2, 2001, p. 689-696.

Research output: Contribution to journalArticle

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