Preparation and properties of methyl- and cyclohexylsilsesquioxane oligomers as organic–inorganic fillers

The preparation of oligosilsesquioxanes from methyltrimethoxysilane and cyclohexyltrimethoxysilane for use as organic–inorganic fillers is reported. These oligomers were characterized by molecular weight, nuclear magnetic resonance analyses, and Fourier-transform infrared spectroscopy. The poly(meth...

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Bibliographic Details
Published in:Journal of sol-gel science and technology 2020-08, Vol.95 (2), p.474-481
Main Authors: Sato, Yohei, Hayami, Ryohei, Miyase, Yuta, Ideno, Yuzuko, Yamamoto, Kazuki, Gunji, Takahiro
Format: Article
Language:English
Subjects:
Ceramics
Chemistry and Materials Science
Composites
Fillers
Fourier transforms
Glass
hybrids and solution chemistries
Infrared analysis
Infrared spectroscopy
Inorganic Chemistry
Materials Science
Mechanical properties
Melt blending
Nanocomposites
Nanotechnology
Natural Materials
NMR
Nuclear magnetic resonance
Oligomers
Optical and Electronic Materials
Original Paper: Sol-gel
Polymethyl methacrylate
Solution blending
Spectroscopic analysis
Spectrum analysis
Thermodynamic properties
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Summary:The preparation of oligosilsesquioxanes from methyltrimethoxysilane and cyclohexyltrimethoxysilane for use as organic–inorganic fillers is reported. These oligomers were characterized by molecular weight, nuclear magnetic resonance analyses, and Fourier-transform infrared spectroscopy. The poly(methyl methacrylate) nanocomposites containing oligosilsesquioxanes were prepared by two methods: (i) the solution blending method and (ii) the solution–melt blending method. The solution–melt blending method was found to be a superior method for improving the thermal and mechanical properties of PMMA by intermolecular interaction between oligosilsesquioxanes fillers and PMMA. Highlights Preparation of oligosilsesquioxanes via hydrolysis–condensation reaction of alkylalkoxysilanes. Characterization of oligosilsesquioxanes by nuclear magnetic resonance analyses and Fourier-transform infrared spectroscopy. Difference of poly(methyl methacrylate) composites containing oligosilsesquioxanes by preparation methods. PMMA composite by solution-melt-blending method showed improved properties.
ISSN:0928-0707
1573-4846
DOI:10.1007/s10971-020-05291-2