Clay dispersibility and mechanical property of the epoxy/clay nanocomposites prepared by different treatment methods |
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| Authors: | Miyuki Harada Takeharu Miyamoto Mitsukazu Ochi |
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| Institution: | Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita‐shi, Osaka 564‐8680, Japan |
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| Abstract: | The bisphenol‐A type epoxy resin was combined with layered clays. Three types of epoxy/clay nanocomposites were prepared by different clay pretreatment methods, that is, the slurry (clay swelling with polar solvent), organo, and solubilization (organoclay swelling with polar solvent) methods. The organo and solubilization systems showed good dispersibility. The basal spacing of the layered clays in the obtained nanocomposites was evaluated by XRD and TEM observations. The basal spacing of the nanoclay in the solubilization system drastically increased. The mechanical properties were improved with the increase in the clay dispersion. A high modulus and fracture toughness were obtained by improvement of the clay dispersion into the matrix. © 2009 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 47: 1753–1761, 2009 |
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| Keywords: | clay crosslinking dispersions epoxy resin mechanical properties morphology nanocomposites |
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