NDLI: Structural and dynamical studies of hybrid siloxane

Content Provider	Royal Society of Chemistry (RSC)
Author	Lebeau, B. Lauprêtre, F. Beaume, F. Sanchez, C. Maquet, J.
Copyright Year	1997
Abstract	Hybrid siloxane–silica coatings have been prepared by hydrolysis and condensation ofN -[3-triethoxysilylpropyl]-2,4-dinitrophenylamine (TSDP) and tetramethoxysilane (TMOS) precursors. Hetero- and homo-condensations between both precursors have been demonstrated to occur in the early stages of the process via 17 O and 29 Si nuclear magnetic resonance (NMR) in solution. These hybrids can be described as nanocomposites made of polysiloxane-based domains cross-linked by silica-based nanoparticles, as evidenced by solid-state NMR, differential scanning calorimetry (DSC) and Fourier-transform infrared (FTIR) studies. Moreover, the high degree of interpenetration occurring in these materials is evidenced by the presence of some Q and T subunits sequestered within these polysiloxane and silica-based domains, respectively. The high-resolution solid-state 13 C NMR technique has shown that the mobility of the propyl 2,4-dinitrophenylamine chromophores is correlated with the glass-transition phenomenon of the matrix.
Starting Page	989
Ending Page	995
Page Count	7
File Format	PDF
ISSN	09599428
Volume Number	7
Issue Number	6
Journal	Journal of Materials Chemistry
DOI	10.1039/a607874e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	DSC Hydrolysis Tetramethyl orthosilicate Nuclear magnetic resonance Solid-state nuclear magnetic resonance Differential scanning calorimetry Fourier-transform infrared spectroscopy Silicone Extracellular matrix
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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