Principle of Multidimensional NMR

1 Dynamic Order Parameters from 2D 1H Magnetisation Exchange Spectroscopy 

The theory needed for the evaluation of the exchange process was also developed [36]. In the limit of short mixing times tm, the initial decay rates for the CH line were found to depend only on the intergroup residual dipolar coupling P)cu cu2 according to 

From the slope of the initial magnetisation decay, the values of the effective residual 

CH-CH2 intergroup linkage rCH-CH2 according to D CHl = D 2 (P2)H H2 This yields (P2) 0.1 and suggests an even higher value for the dynamic-order parameter 

13C NOE spectroscopy under MAS was used for probing polymer miscibility in polymer blends, polystyrene/polyvinyl methyl ether (PS/PVME) [42], This study takes advantage of the fact that crosspeaks appear only between spins that are neighbours of each other, 

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