Macromolecules magic angle” spinning

Asakura, T., Kuzuhara, A., Tabeta, R., and Saito, H. (1985). Conformation characteriz-tion of Bombyx mod silk fibroin in the solid state by high-frequency 13C cross polarization-magic angle spinning NMR, x-ray diffraction, and infrared spectroscopy. Macromolecules 18, 1841-1845. 

In this section, initial spectral data on several polymers are reported to illustrate the utility of variable-temperature magic-angle spinning (VT-MAS) for the study of macromolecules in the solid state. 

Stoever HDH, Frechet JMJ, Direct polarization 13C and 1H magic angle spinning NMR in the characterization of solvent-swollen gels, Macromolecules, 22 1574-1576, 1989. 

MD Poliks, J Schaefer. Microscopic dynamics in chloral polycarbonate by crosspolarization magic-angle spinning carbon-13 NMR. Macromolecules 23 2682-2686, 1990. 

H. Saito, R. Tabeta, T. Asakura, Y. Iwanaga, A. Shoji, T. Ozaki, I. Ando, High-resolution C-13 NMR-study of silk fibroin in the solid-state by the cross-polarization magic angle spinning method—conformational characterization of silk-I and silk-II type forms of Bombyx mori fibroin by the conformation-dependent C-13 chemical-shifts. Macromolecules 17 (1984) 1405-1412. 

H.R. Kricheldorf, D. Muller, Secondary structure of peptides.3. C-13 NMR cross polarization magic angle spinning spectroscopic characterization of solid polypeptides, Macromolecules 16 (1983) 615-623. 

Shefer, A., Shefer, S., Kost, J. and Langer, R. (1992) Structural characterization of starch networks in tlic solid state by cro.s.s-polarization magic-angle spinning 13C NMR spectroscopy and wide angle X-rav diffraction. Macromolecules, 25, 6756-6760. 

Fyfe CA, Rudin A, Tchir WJ. Application of High-Resolution C NMR Spectroscopy Using Magic Angle Spinning Techniques to the Direct Investigation of Solid Cured Phenolic Resins. Macromolecules 1980 13 1320. 

Bryson RL, Hatfield GR, Early TA, Palmer AR, MAciel GE. Carbon-13 NMR studies of solid phenolic resins using cross polarization and magic-angle spinning. Macromolecules... 

Figure 6 MAS image of the polybutadiene fraotion of a poly-butadiene/polystyrene blend cast as a film from toluene. MAS alone at 5 kHz spinning Is not suffioient to narrow the polystyrene NMR resonanoe. The in-plane resolution Is SOxSOpm. Figure reproduoed with permission from Cory DG, de Boer JC and Vee-man WS (1989) Magic angle spinning H NMR imaging of poly-butadiene/polystyrene blends. Macromolecules 22 1618.

W.L. Earl, D.L. Vanderhart, Observations in solid polyethylenes by C-13 nuclear magnetic-resonance with magic angle sample spinning. Macromolecules 12 (1979) 762-767. 

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