Cotton linters and viscose grade wood pulp were partially acetylated and carboxymethylated. The samples were grafted under the same conditions with acrylamide. Grafting yield and efficiency depend on several factors, as the kind of pulp, chemical and physical structure, type of the introduced substi
Distribution of substituents in partially acetylated cellulose
✍ Scribed by Björndal, Håkan ;Lindberg, Bengt ;Rosell, Karl-Gunnar
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2007
- Weight
- 232 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0449-2994
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✦ Synopsis
Abstract
The distribution of substituents in a partially acetylated cellulose (DS 2.4) has been determined. 0‐Acetyl groups were replaced by 0‐methyl groups by using methylsulphinyl sodium and methyl iodide on a product, in which the original free hydroxyl groups had been protected by reaction with methyl vinyl ether. The methylated sugars obtained on acid hydrolysis of this product were converted into alditol acetates and analyzed by GLC‐mass spectrometry.
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