Methode zur Konstitutionsaufklärung von Celluloseformalen von niedrigem Substitutionsgrad. 29. Mitteilung über textilchemische Untersuchungen | Zendy

Heinisch K. A. | Zendy; Katayama A. | Zendy; Rouette H. K. | Zendy; Zollinger H. | Zendy

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Methode zur Konstitutionsaufklärung von Celluloseformalen von niedrigem Substitutionsgrad. 29. Mitteilung über textilchemische Untersuchungen

Author(s) -

Heinisch K. A.,

Katayama A.,

Rouette H. K.,

Zollinger H.

Publication year - 1973

Publication title -

helvetica chimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.74

H-Index - 82

eISSN - 1522-2675

pISSN - 0018-019X

DOI - 10.1002/hlca.19730560132

Subject(s) - chemistry , formaldehyde , cellulose , solvent , methyl iodide , polymer chemistry , organic chemistry , nuclear chemistry

A method is described which allows the determination of the hydroxyl group(s) in glucose units of cellulose which react with formaldehyde at low degrees of substitution (0.2 to 1.5% CH 2 O on cellulose). It consists of permethylation of the cellulose by a sequence of two methylations with dimethylsulfate and NaOH (without solvent) followed by 2 exchange methylations with methyl iodide and sodium n ‐butoxide and further steps described earlier [2]. The results demonstrate that the use of the new permethylation method leads to a loss of material of less than 5%.

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