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Article Summary
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Wan Q et al. - A face-centered cubic packed structure could form in both the sediment from silica dispersions in polar solvents and stable dispersions in TEGDMA. Dimethylaminoethyl methacrylate was found to disrupt an ordered structure when non-silanized silica particles were used. Silanization with 3-methacryloxypropyl trimethoxysilane (MPS) promoted filler ordering. Standard compression tests on composites containing 60 wt% silica in TEGDMA with or without DMAEMA indicated that DMAEMA had a clearly significant effect on failure strain, compressive strength, and toughness, and a marginally significant effect on modulus.
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