Variable-Temperature Magic-Angle Spinning Carbon-13 NMR Studies of Solid Polymers
1980; American Chemical Society; Linguagem: Inglês
10.1021/bk-1980-0142.ch010
ISSN1947-5918
AutoresWilliam W. Fleming, Colin A. Fyfe, R. D. Kendrick, J. R. Lyerla, H. Vanni, C. S. Yannoni,
Tópico(s)Advanced MRI Techniques and Applications
ResumoFrom the viewpoint of polymer applications, the full exploitation of the combined resolution/sensitivity enhancement techniques to obtain "high-resolution" spectra of rare-spin nuclei in solids requires variable temperature spinning capability. In this paper, we describe briefly a spinner assembly suitable for routine operation over a wide range of temperature at the full complement of spinning angles and report 13C spectral data at low temperature on several polymers, including fluoropolymers. In addition, variable temperature 13C spin-lattice and rotating frame relaxation times are reported for isotactic poly(propylene).
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