The carboxymethylation of organosolv and kraft lignins
| Autor: | W. Lange, W. Schweers |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Ethanol
biology fungi Organosolv technology industry and agriculture food and beverages Forestry Picea abies macromolecular substances Plant Science biology.organism_classification Pulp and paper industry complex mixtures Industrial and Manufacturing Engineering chemistry.chemical_compound Adsorption Bromoacetic acid chemistry Fagus sylvatica Organic chemistry Lignin General Materials Science Kraft paper |
| Zdroj: | Wood Science and Technology. 14:1-7 |
| ISSN: | 1432-5225 0043-7719 |
| DOI: | 10.1007/bf00353458 |
| Popis: | Kraft and ethanol organosolv lignins from Picea abies and Fagus sylvatica were carboxymethylated with bromoacetic acid. Of the total hydroxyl groups in the lignins, 60–70% were carboxymethylated. The reaction led to an increase of the number-average molecular weights. The moisture adsorption of the carboxymethylated products is about one and a half as high as that of the original lignins. There are no remarkable differences between the solubilities of the treated and untreated products. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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