[Zurück]

S. Knaus, U. Mais, W.H. Binder:
"Synthesis, characterization and properties of methylaminocellulose";
Cellulose, 10 (2003), S. 139 - 150.

Homogeneously prepd. tosylcelluloses (TC) with degrees of substitution (DS) of DSTos 0.1-1.8 were used as intermediates for the synthesis of methylaminocelluloses (MAC) by nucleophilic substitution with methylamine. TC with DSTos up to 1.1 were shown to be valuable intermediates for selective synthesis of MAC with DSMA varying from 0.1 to approx. 1. No nucleophilic substitution was obsd. at higher DSTos. At the chosen reaction conditions (60 °C, 48 h) residual tosyl moieties remained unchanged and little hydrolysis took place. The samples obtained were characterized by means of elemental anal., FTIR and 13C CP/MAS NMR spectroscopy. 13C CP/MAS NMR spectroscopy was found to be an efficient tool for quantification of DSMA. Furthermore, the swelling behavior in water was investigated and preliminary tests concerning the bilirubin adsorption capacity of MAC were carried out.