ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
29Si NMR spin-lattice relaxation time (T1) measurements were performed with asymmetrically substituted oligomeric cyclosiloxanes (MeRSiO2/2)n (with R = phenyl, n = 3 and R = H, n = 4 - 6). Temperature- and field-dependend measurements allow separation into different relaxation mechanisms. Based on these results, molecular correlation times τc were calculated. The methyl-H cycles were found to be more mobile than the methyl-phenyl ones.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1988.021890910