Ladder-Like Aromatic Imide-Functionalized Poly(silsesquioxane): Preparation and Characterization via the Sol–Gel Route
作者： Christian Schramm , Beate Rinderer , Richard Tessadri
DOI: 10.1002/ADV.21576
关键词:
摘要: 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 thermal treatment at 220°C. material characterized means of Fourier transform infrared spectroscopy, 13C and 29Si solid-state magic angle nuclear magnetic resonance X-ray powder diffraction, thermogravimetric analysis, differential analysis. findings give evidence that a is formed when PMDA reacts APTES in molar ratio 1:1. Kinetic studies adsorption methylene blue (MB) reveal PMDA/APTES (molar = 1:1) capable adsorbing MB whereas 1:2) shows almost no capacity.
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