𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The carboxymethylation of organosolv and kraft lignins

✍ Scribed by W. Lange; W. Schweers

Publisher
Springer
Year
1980
Tongue
English
Weight
321 KB
Volume
14
Category
Article
ISSN
0043-7719

No coin nor oath required. For personal study only.

✦ Synopsis

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 earboxymethylated. 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.

πŸ“œ SIMILAR VOLUMES

The graft copolymerization of styrene an
The graft copolymerization of styrene and lignin. II. Kraft softwood lignin
✍ R. B. Phillips; W. Brown; V. T. Stannett πŸ“‚ Article πŸ“… 1972 πŸ› John Wiley and Sons 🌐 English βš– 658 KB

The radiation-induced graft copolymerization of styrene and various kraft softwood lignins was studied. Expression of the results as the usual "per cent graft" was impossible, because grafting caused the lignin to become extractable in solvents for the styrene homopolymer. However, evaluation of the