US EPA

7545812 

Journal Article 

Derivatization of cellulose in lithium chloride and N-N-dimethylacetamide solutions 

Mccormick, CL; Callais, PA 

1987 

1 

Polymer
ISSN: 0032-3861 

ELSEVIER SCI LTD 

OXFORD 

28 

13 

2317-2323 

English 

10.1016/0032-3861(87)90393-4 

WOS:A1987L039600024 

The derivatization of cellulose in mixtures of lithium chloride and N,N-dimethylacetamide (LiCl/DMAc) is described. A wide range of cellulose derivatives, including cellulose esters, carbamates, sulphonates and ethers, have been synthesized in homogeneous solution using the LiCl/DMAc solvent. In most cases, a high degree of substitution was achieved, and the degree of substitution could be controlled accurately. Compared to current heterogeneous synthesis of cellulose derivatives, reactions conducted in homogeneous solutions of LiCl/DMAc have many advantages: (1) reactions may be conducted at moderate temperatures; (2) less reagent is required; (3) less degradation of the cellulose occurs; and (4) substitution is uniformly controllable. © 1987. 

cellulose carbamate; cellulose derivatization; cellulose ester; cellulose ether; cellulose solvent; cellulose sulphonate; homogeneous solution reactions; CELLULOSE; LITHIUM COMPOUNDS - Solutions; CELLOSE SULFONATE; CELLULOSE CARBAMATE; CELLULOSE DERIVATIZATION; CELLULOSE ESTER; CELLULOSE SOLVENT; CELLULOSE DERIVATIVES