| Summary: | 碩士 === 中原大學 === 化學研究所 === 98 === In this paper, comparative studies on the preparation and physical properties of as-prepared PMMA/nano-silica composite (PNS) and PMMA/Submicro-silica composite (PMS) materials were successfully presented. Vinyl-modified silica nanoparticles and sub-microparticles were first prepared by sol-gel route with/without chelating agent of acetyl acetone (AcAc). Specific feeding amount of silica particles was subsequently reacted with MMA monomers by emulsion polymerization to yield series of PMS and corresponding PNS materials, respectively.
Systematically comparative studies on the physical properties of both as-prepared composite materials indicated precisely that PNS showed effectively enhanced anticorrosion, mechanical properties as compared to that of corresponding PMS based on a series of instrumentation evaluations performed by electrochemical cyclic voltammetric (CV), Salt Spray Test, dynamic mechanical analysis (DMA), Gas Permeability Analyzer (GPA), Vapor Permeability Analyzer (VPA) and UV-visible transmission spectroscopy, respectively.
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