Application of13C NMR in studying the dynamics and structure of liquid phenol
β Scribed by A. M. Aparkin; V. A. Daragan
- Book ID
- 112449402
- Publisher
- Springer
- Year
- 1987
- Tongue
- English
- Weight
- 369 KB
- Volume
- 36
- Category
- Article
- ISSN
- 1573-9171
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Phenolβureaβformaldehyde (PUF) resins were synthesized by reacting mixture of methylolureas (MMU), phenol, and formaldehyde. The structure of PUF cocondensed resins at different stages of reaction were analyzed by liquid ^13^C nuclear magnetic resonance (NMR) spectroscopy. The liquid ^1
Al~lraet--The NMR 13C (CMR) spectrum of high molecular weight (M = 20,000) branched polyethyleneimine (PEI) obtained by polymerization of ethyleneimine (EI) in aqueous and alcoholic solutions at 50 Β° with 1,3-dichloropropanol as initiator, contains 8 lines. The lines were identified using CMR spectr
## Abstract A dynamic study of spirocyclohexanes was carried out using lowβtemperature ^13^C nuclear magnetic resonance spectroscopy. The variations of the energy barrier to inversion of the cyclohexane ring are interpreted in terms of the electronegativity of the heteroatoms of the spiro substitue