Methods for correlating T1ρ and FID components in wideline H NMR studies of motionally heterogeneous polymer systems |
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Authors: | Marco Geppi Alan M Kenwright Barry J Say |
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Abstract: | We address the problem of correlating the observed FID and T1ρ components in wideline 1H relaxation measurements of motionally heterogeneous polymers, and show that different methods of data treatment can highlight different aspects of the correlations present. For a sample of polypropylene we find that the T1ρ relaxation behaviour is driven by relaxation associated with the intermediate FID component, which strongly suggests a motionally inhomogeneous amorphous region in the sample. |
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Keywords: | Polymers Polypropylene FID analysis T1ρ relaxation Spin diffusion |
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