1. A two-step Sol-Gel method to synthesize a ladder polymethylsilsesquioxane nanoparticles
- Author
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Philippe Bébin, Abdessamad Baatti, Denis Bussières, Fouad Erchiqui, and François Godard
- Subjects
Thermogravimetric analysis ,Materials science ,Methyltrimethoxysilane ,General Chemical Engineering ,Nanoparticle ,Infrared spectroscopy ,Nanotechnology ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Contact angle ,chemistry.chemical_compound ,symbols.namesake ,chemistry ,Chemical engineering ,Mechanics of Materials ,symbols ,Thermal stability ,0210 nano-technology ,Raman spectroscopy ,Sol-gel - Abstract
The ladder polymethylsilsesquioxane (PMSQ) nanoparticles with average diameter size of 15 and 20 nm were synthesized by hydrolysis and condensation of methyltrimethoxysilane (MTMS). An ex situ kinetic study in acidic medium of MTMS hydrolysis was followed by Raman spectroscopy. The PMSQ nanoparticles was studied by infrared spectroscopy, 29Si and 13C nuclear magnetic resonance and by X-ray diffraction. The thermal stability was examined by thermogravimetric analysis. PMSQ nanoparticles have a degradation temperature of 390 °C under nitrogen and 380 °C under oxygen, an excellent specific area (397.21 m2/g), a density of 1.42 g/m3 and hydrophobic surface (apparent contact angle 148° ± 3).
- Published
- 2017
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