Citation: Ping-chuan Sun, Jian-jun Zhu, Tie-hong Chen. 2H-NMR CHARACTERIZATION OF CLAY DISPERSION AND CONFINEMENT EFFECT ON PROBE MOLECULES IN RUBBER/CLAY NANOCOMPOSITE-GELS[J]. Chinese Journal of Polymer Science, ;2009, 27(1): 71-76. shu

2H-NMR CHARACTERIZATION OF CLAY DISPERSION AND CONFINEMENT EFFECT ON PROBE MOLECULES IN RUBBER/CLAY NANOCOMPOSITE-GELS

Received Date: 20 August 2008
Revised Date: 1 January 1900

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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