29Si NMR in LC–NMR analysis of silicones
✍ Scribed by Vratislav Blechta; Jan Sýkora; Jiří Hetflejš; Stanislav Šabata; Jan Schraml
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 127 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.1715
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✦ Synopsis
Abstract
It is demonstrated using a practical example that indirect detection of ^29^Si NMR signals is sufficiently sensitive in LC–NMR stop‐flow arrangement to analyze mixtures of siloxane polymers. New cryogenic probes with better signal‐to‐noise ratio will turn this version of LC–NMR into a routine method for analysis of siloxane polymers. Copyright © 2005 John Wiley & Sons, Ltd.
📜 SIMILAR VOLUMES
29Si chemical shifts in a wide variety of silicates in crystalline, glassy and gel states have been related to a parameter, P, which takes into account the electronegativity and the structural description of the silicate units as well as the ionic potential of the modifier cation. The relation, G(pp
The coupling of high performance liquid chromatography with nuclear magnetic resonance spectroscopy (LC-NMR) is one of the most powerful methods for the separation and structural elucidation of unknown compounds in mixtures. The recent progress in pulse field gradients and solvent suppression, the i