The styrene sequence distributions and amount of reacted fumarate units in cured, unsaturated polyester resins were studied by solid-state 13 C nuclear magnetic resonance. Increasing the styrene content and molar ratio of styrene to the double bonds in the polyester chain increased the amount of dia
Solid state 13C nuclear magnetic resonance of heavy oil/bitumen-derived solids
โ Scribed by David E. Axelson
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 483 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0016-2361
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๐ SIMILAR VOLUMES
Benzoxazines derived from bisphenol-A, formaldehyde, and primary amines were characterized using 13 C solid-state NMR spectroscopy. The two 1,3benzoxazines studied in this work are 2,2ะ-(3-methyl-4-dihydro-1,3,2-benzoxazine)propane, (B-m) and 2,2ะ-(3-phenyl-4-dihydro-1,3,2-benzoxazine)propane (B-a).
The hypothetical average structures of two coal liquid asphaltenes were determined using solid state 13 C NMR and 1 H NMR data. From the 1 H NMR data average molecular structural parameters were obtained using the Brown-Ladner method to get a general average structure. From the solid state 13 C NMR