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6602572 
Journal Article 
INTERMOLECULAR POLARIZATION TRANSFER STUDY OF POLYMER BLEND COMPATIBILITY 
Gobbi, GC; Silvestri, R; Russell, TP; Lyerla, , JR; Fleming, WW; , 
1987 
1 
Journal of Polymer Science, Part C: Polymer Letters
ISSN: 0887-6258 
JOHN WILEY & SONS INC 
NEW YORK 
25 
2 
61-65 
English 
WOS:A1987F905000002 
A method of studying intermolecular mixing in multicomponent systems using CPMAS NMR spectroscopy is presented. The technique involves the transfer of nuclear magnetization from an abundant spin system of one component to a rare spin system of another component via dipolar Cross Polarization. This polarization transfer has r** minus **6 spatial dependence which generally limits effective transfer to distances of less than about 20 A. The technique is demonstrated with two systems: deuterated poly(styrene)/poly(methyl methacrylate) which are incompatible and deuterated poly(styrene)/poly(vinyl methyl ether) which are compatible. A discussion of some of the areas of application is also presented.