Analysis of spin-diffusion measurements by iterative optimisation of numerical models.

This work shows how information from a number of solid-state 1H NMR experiments can be combined in a numerical model of a heterogeneous polymer system, which can then be iteratively optimised by varying a small number of parameters to fully represent the spin-diffusion and relaxation behaviour of the system. In this way useful information can be obtained not only about the size of the heterogeneities present, but also about the intrinsic relaxation behavior of the different regions.