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Distribution of substituents in O-ethyl-O-(2-hydroxy-ethyl)cellulose

✍ Scribed by Bengt Lindberg; Ulf Lindquist; Olle Stenberg

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
486 KB
Volume
176
Category
Article
ISSN
0008-6215

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✦ Synopsis

ABSTRACX

The distribution of substituents in six 0-ethyl-0-(2-hydroxyethyl)celluloses has been investigated by methylation analysis. The samples were prepared under conditions analogous to those used industrially. An analysis of the results, under simplified assumptions, indicates that the distribution of substituents in the greater part of each sample is fairly similar to that expected for a homogeneous reaction. There was, however, a considerable discrepancy between the percentage of (CH,CH,O) residues determined by analysis and the value calculated from the composition of the hydrolysate. The former value was much higher, indicating that glucose ethers with a high degree of hydroxyethylation have been overlooked in the g.1.c. analysis.

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