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2H-NMR CHARACTERIZATION OF CLAY DISPERSION AND CONFINEMENT EFFECT ON PROBE MOLECULES IN RUBBER/CLAY NANOCOMPOSITE-GELS
作者:Sun PC, Zhu JJ, Chen TH
關鍵字:Rubber/clay nanocomposite, NMR, Clay dispersion, Confinement
論文來源:期刊
具體來源:Chinese Journal of Polymer Science 2009, 27, 71-76
發(fā)表時間:2009年
2H-NMR spectroscopy of the probe molecule, deuterated benzene, was applied to characterize organo-clay dispersion and confinement effect on the local motion of benzene in rubber/clay nanocomposite-gels. The observed 2H line shapes of benzene in intercalated and exfoliated nanocomposites were obviously different, which can be used to estimate clay-dispersion quality. 2H-NMR line shapes also reflect the different influence of intercalated or exfoliated layered-silicates on local motions of benzene, implying that probe molecules exhibit different local motions depending on different confined geometry in these nanocomposites. Viscosity measurements further confirmed these NMR results.
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