## 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 dist
The preparation of O-methyl- and O-ethyl-celluloses having controlled distribution of substituents
โ Scribed by Tetsuo Kondo; Derek G. Gray
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 698 KB
- Volume
- 220
- Category
- Article
- ISSN
- 0008-6215
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๐ SIMILAR VOLUMES
A method is described for the analysis of positions of substitution of O-methyl and O-ethyl groups in commercial samples of O-methylcellulose and O-ethylcellulose, respectively. The method requires perethylation of O-methyl-cellulose and permethylation of O-ethylcellulose. Subsequent reductive cleav
## Structural characteristics of 0-(2-hydroxypropyl)cellulose samples, namely the molar substitution (mol. subst.), the total degree of substitution (d.s.), and the individual degree of substitution of hydroxyl groups on the glucose residues for a wide mol. subst . range of samples were determined