The covalent nature of the bond between a reactive dye and the cellulose molecule has been proved by means of microbiological degradation of the dyed cellulose and identification of glucose in the hydrolysate of a dyed soluble degradation product.
Über die Art der Bindung zwischen Reaktivfarbstoff und Cellulose. 5. Mitteilung über textilchemische Untersuchungen
✍ Scribed by B. Krazer; Hch. Zollinger
- Publisher
- John Wiley and Sons
- Year
- 1960
- Tongue
- German
- Weight
- 732 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Reactive dyestuffs containing a sulphofluoride group are fixed on cellulose by a covalent sulphonic ester linkage. Experimental evidence for this conclusion is afforded by the exchange of such a reactive dye for iodine by treatment of the dyed cellulose with NaI in acetone. This reaction is specific for sulphofluoride dyes.
📜 SIMILAR VOLUMES
## Abstract Reactive dyes of the Procion and Remazol types react with glucose or celobiose in alkaline solution to give predominantly dye __glucosides__. Therefore the previous publications, claiming a direct chemical proof for a covalent bond between the __alcoholic__ cellulose hydroxyl groups and
Vortrage an der Technischen Hochschule Dresden (22. April 1966), vor der Soci6tC Vaudoise des Sciences Naturelles in Lausanne (5. Mai 1966) und der Association des Chimistes de I'Industrie Textile in Paris (30. Sept. 1966). ' ) Wir danken der POLYMETRON AG, Glattbrugg-Zurich, fur ihre Mithilfe bei
Stau d i n g e r und Fr eu den b e rger, matischen Vorgangen gebildeten Reaktionsprodukte, hat sich nicht bearbeiten lassen. Die Kurzlebigkeit aes Bakterienmaterials und die schwierige Beschaff barkeit groBerer Mengen hat die Fortsetznng der Untersuchung in praparativer Richtung vorlaufig nnterbunde