Organic-Inorganic Hybrid Materials X: Characterization and Degradation of Hydroxyl-Containing Fluorinated Polyimide-Silica Hybrids

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Hydroxyl-containing fluorinated polyimide-silica hybrid materials (FPI-SiO2) were obtained using the sol-gel technique by polycondensation of tetramethoxysilane (TMOS) in 3-aminopropylmethyl diethoxysilane (APrMDEOS)-terminated amic acid solution. Infrared, 29Si-, and 13C-NMR spectroscopy and thermogravimetric analysis (TGA) were used to study hybrids containing various proportions of TMOS. The microstructure and chain mobility of the hybrids was investigated by spin-lattice relaxation time in rotating frame (T^{H}_{1\rho}) measurements. The apparent activation energy (Ea) for degradation of the hybrids was studied by Friedman and van Krevelen methods.

Keywords: Degradation; Hybrids; Polyimide; Relaxation; Silica

Document Type: Research Article


Affiliations: 1: Department of Applied Chemistry, Chung Cheng Institute of Technology, NDU, Tahsi, Taoyuan, Taiwan 2: Chemical Systems Research Division, Chung Shan Institute of Science and Technology, Taoyuan, Taiwan

Publication date: May 1, 2003

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