Diffusive motion of atactic polypropylene near Tg

Tg in the presence of plasticizers [19] or to study the motion of individual components of polymer blends [20]. A goal of these experiments has been to provide a direct approach to confirm the applicability of WLF theory, and to the present WLF theory, has been useful in its extension to NMR data (see also chapter 6). 

Rohr [52] to examine the correlation function for a-PP. They find evidence that the correlation function itself is non-exponential (case 2). 

It is important to also note the application of deuteron NMR to multidimensional experiments involving dipolar interactions and imaging [139]. Schmidt et al [138] have recently presented a dipolar measurement 

---