𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Characterization of polyurethane elastomers by 13C n.m.r. spectroscopy

✍ Scribed by C. Delides; R.A. Pethrick; A.V. Cunliffe; P.G. Klein

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
551 KB
Volume
22
Category
Article
ISSN
0032-3861

No coin nor oath required. For personal study only.

πŸ“œ SIMILAR VOLUMES

Characterization of coals and coal oxida
Characterization of coals and coal oxidation by magic-angle 13C n.m.r. spectroscopy
✍ John R. Havens; Jack L. Koenig; Deborah Kuehn; Carol Rhoads; Alan Davis; Paul C. πŸ“‚ Article πŸ“… 1983 πŸ› Elsevier Science 🌐 English βš– 651 KB

## Magic-angle 13C n.m.r. spectra have been obtained for a series of vitrinite concentrates. Proper modification of the cross-polarization pulse sequence allows separation of protonated and nonprotonated carbon resonances. This technique is used to determine the relative fraction of nonprotonated

Investigation of substituent effects of
Investigation of substituent effects of chalcones by 13C n.m.r. spectroscopy
✍ E. SoĺǎniovΓ‘; Ε . Toma; S. Gronowitz πŸ“‚ Article πŸ“… 1976 πŸ› John Wiley and Sons 🌐 English βš– 450 KB πŸ‘ 1 views

## Abstract ^13^C chemical shifts for 23 __para__‐ and __meta__‐substituted chalcones of the types **1** and **2** have been determined. The aromatic shieldings are compared with previous results for other aromatic derivatives. Correlations of the ^13^C chemical shifts of vinyl carbons and carbonyl

Oil-shale analysis by CP/MAS-13C n.m.r.
Oil-shale analysis by CP/MAS-13C n.m.r. spectroscopy
✍ Edward W. Hagaman; Donald C. Cronauer; Fred M. Schell πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science 🌐 English βš– 613 KB

Solid-state 13C n.m.r. (CP/MAS-13C n.m.r.) spectroscopy provides a direct method for estimating potential oil yields of oil shale formations. Relative aliphatic resonance areas correlate linearly with oil yield and provide a method for oil yield estimation that obviates the need to determine weight