Compatibility Enhancement of Polyimide–Silica Hybrid Sol–Gel Materials Without Incorporation of Silane-Coupling Agent

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Abstract:

A facile route has been developed to enhance compatibility between organic polyimide matrix and dispersed phase of inorganic silica particles without addition of conventional silane-coupling agent. The as-prepared hybrid sol–gel materials having reduced size of SiO2 particle dispersed in polyimide matrix were successfully synthesized through pre-catalyzed sol–gel route using an organic diamine base. The PI-silica hybrid materials through conventional polyamic acid-catalyzed sol–gel route with/without silane-coupling agent were also prepared for comparative control studies. Morphological feature of as-prepared sol–gel materials prepared from three different approaches was also compared based on the studies of transmission electron microscopy. Effects of the material composition, in three different catalyzed routes, were investigated by thermal stability, mechanical strength, optical clarity, gas barrier and water absorption measurements of polyimide and a series of polyimide–silica hybrid sol–gel materials, respectively.

Keywords: COUPLING AGENT; ORGANIC BASE-CATALYZE; POLYIMIDE; SILICA

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2011.3763

Publication date: April 1, 2011

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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