Ladder-Like Aromatic Imide-Functionalized Poly(silsesquioxane): Preparation and Characterization via the Sol-Gel Route
| Autor: | Beate Rinderer, Christian Schramm, Richard Tessadri |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Thermogravimetric analysis
Materials science Magic angle Polymers and Plastics General Chemical Engineering Organic Chemistry 02 engineering and technology Nuclear magnetic resonance spectroscopy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Silsesquioxane 0104 chemical sciences chemistry.chemical_compound Adsorption chemistry Triethoxysilane Polymer chemistry Fourier transform infrared spectroscopy 0210 nano-technology Imide |
| Zdroj: | Advances in Polymer Technology. 36:77-85 |
| ISSN: | 0730-6679 |
| DOI: | 10.1002/adv.21576 |
| Popis: | A ladder-like polysilsesquioxane (PSSQ) has been synthesized by reacting pyromellitic acid anhydride (PMDA) with (3-aminopropyl)triethoxysilane (APTES), yielding the corresponding poly(amic acid) (PAA). The as-prepared PAA was converted to an imide-functionalized PSSQ by thermal treatment at 220°C. The material was characterized by means of Fourier transform infrared spectroscopy, 13C and 29Si solid-state magic angle nuclear magnetic resonance spectroscopy, X-ray powder diffraction, thermogravimetric analysis, and differential thermogravimetric analysis. The findings give evidence that a ladder-like PSSQ is formed when PMDA reacts with APTES in a molar ratio of 1:1. Kinetic studies of the adsorption of methylene blue (MB) reveal that PMDA/APTES (molar ratio = 1:1) is capable of adsorbing MB whereas PMDA/APTES (molar ratio = 1:2) shows almost no MB adsorption capacity. |
| Databáze: | OpenAIRE |
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