ISSN:
1089-7690
Quelle:
AIP Digital Archive
Thema:
Physik
,
Chemie und Pharmazie
Notizen:
The temperature dependence of proton NMR spectra and spin–lattice relaxation in the rotating frame has been studied for Pb(CF3SO3)2 PEOn, where PEO is poly(ethylene oxide) (MW=4×106), and n=3–40. The dynamic properties of the crystalline PEO are not affected when salt is dissolved into the polymer. The chain mobility is, however, highly reduced in the amorphous regions and the mobility is in the same range as in crystalline PEO at room temperature. 19F NMR studies, spectra, and spin–lattice relaxation in the laboratory frame, suggest a correlation between the anion mobility and the polymer chain mobility, even though the interactions are weak. © 1996 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.471261
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