ScholarLens Back to search
1983•Organic Magnetic ResonanceRequires access

1H, 13C and 7Li nuclear magnetic resonance study of the lithium chloride–N,N‐dimethylacetamide system

J. Saint Germain, M. Vincendon

Open publisher page 20 citations

Abstract

Abstract The complex solvent obtained by dissolving 5‐10% of lithium chloride in N,N‐dimethylacetamide (DMA) presents a good method for dissolving highly insoluble polymers, such as cellulose. 1H, 13C and 7Li NMR spectroscopy have been used, together with viscosity and conductivity measurements, for the study of this complex solvent. The 1H and 13C chemical shift variations of DMA, on increasing the lithium chloride concentration, are found to be in opposite directions. The T1 relaxation times show a large decrease in the mobility of DMA in the presence of lithium chloride. Methyl‐β‐D‐glucopyranoside has been used as a model for cellulose in order to investigate the mechanism of solution of this polymer. It was found that each hydroxy group of the solute interacts with one lithium chloride molecule in solution.

About this research paper

What this paper is about

Abstract The complex solvent obtained by dissolving 5‐10% of lithium chloride in N,N‐dimethylacetamide (DMA) presents a good method for dissolving highly insoluble polymers, such as cellulose. 1H, 13C and 7Li NMR spectroscopy have been used, together with viscosity and conductivity measurements, for the study of this complex solvent. The 1H and 13C chemical shift variations of DMA, on increasing the lithium chloride concentration, are found to be in opposite directions. The T1 relaxation times show a large decrease in the mobility of DMA in the presence of lithium chloride. Methyl‐β‐D‐glucopyranoside has been used as a model for cellulose in order to investigate the mechanism of solution of this polymer. It was found that each hydroxy group of the solute interacts with one lithium chloride molecule in solution.

Why it matters

OpenAlex reports 20 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Abstract The complex solvent obtained by dissolving 5‐10% of lithium chloride in N,N‐dimethylacetamide (DMA) presents a good method for dissolving highly insoluble polymers, such as cellulose. 1H, 13C and 7Li NMR spectroscopy have been used, together with viscosity and conductivity measurements, for the study of this complex solvent. The 1H and 13C chemical shift variations of DMA, on increasing the lithium chloride concentration, are found to be in opposite directions. The T1 relaxation times show a large decrease in the mobility of DMA in the presence of lithium chloride. Methyl‐β‐D‐glucopyranoside has been used as a model for cellulose in order to investigate the mechanism of solution of this polymer. It was found that each hydroxy group of the solute interacts with one lithium chloride molecule in solution.

Key concepts: Lithium chloride, Dimethylacetamide, Dissolution, Chemistry, Chloride, Lithium (medication), Solvent, Cellulose

Related papers

Related paper 1Related paper 2
Back to paper searchBrowse research topicsOriginal source
1H, 13C and 7Li nuclear magnetic resonance study of the lithium chloride–N,N‐dimethylacetamide system — Research Paper | ScholarLens