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My interest is structural analysis of polymeric materials using solid-state NMR.
1H spin diffusion
A tool for detecting the domain size of components in heterogeneous solids.
The intrinsic 1H spin-lattice relaxation rates detected by each functional group
of a polymer are averaged out by the 1H spin diffusion phenomenon.
Analyzing the 1H spin diffusion rate enables us to detect the heterogeneity.
Polymer Blends -
Interaction, Miscibility, Molecular Motion
Miscibility is one of key words for polymer blends or alloys. In general, it is necessary for a polymer blend to be homogeneous
that some exothermic inter-polymer interactions exist. In such a case, the molecular motion of polymers may alter after blending.
Solid-state high-resolution NMR analysis enables us to reveal the interaction, miscibility, and molecular motion in polymer alloys.
Organic/Inorganic Nanocomposites -
Morphology, Molecular motion, Interface
Solid state NMR can observe not only C or H but also inorganic elements,
so that solid state NMR is one of powerful tools to characterize the nanocomposites.
For nylon6/montmorillonite nanocomposites, morphology of two distinct crystalline phases has been studied by analyzing
the T1H curves taking into account of the paramagnetic effect on 1H spin diffusion.
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