Abstract
ABSTRACTOrganic-inorganic hybrid nanocomposite materials of poly(methyl methacrylate) (PMMA) and organically-modified silicate (B34) systems have been prepared via melt intercalation with variation of tacticity and molecular weight as the main molecular variables. Only two of the PMMA samples (with the lowest glass transition temperatures) were able to undergo large-scale intercalation into B34, as seen by X-ray diffraction (XRD) and Infrared spectroscopy. The saturation weight ratio of PMMA to B34 was about 25:75 (wt%), deduced by a controlled differential scanning calorimetry (DSC) experiment. Two new absorption bands of PMMA-B34 hybrid in Fourier transform-infrared spectrometry (FTIR) were demonstrated for first time in this system and show a change in molecular interaction of bulk and intercalated PMMA. The degradation temperature of the PMMA-B34 hybrid is higher than that of PMMA alone, or a physical mixture of PMMA and silicate under an air or a nitrogen flow.
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