New aspects in cationization of lignocellulose materials. VII. Modification of spruce wood meal with quarternary ammonium groups

摘要

AbstractTrimethylammonium‐2‐hydroxypropyl (TMAHP) derivatives of spruce wood meal (SWM) and holocellulose of this specia were prepared by the reaction of wood meal with 3‐chlor‐2‐hydroxy‐propyltrimethylammoniumchloride (CHMAC) in alkaline medium. The TMAHP samples were fractionated and yields and exchange capacity (Q) of individual fractions were compared with beech and aspen fractions obtained under the same conditions. As it is evident from13C‐NMR spectroscopy and GPC analysis the water soluble fraction from TMAHP–SWM consists only of lignin–saccharide degradation products. The NaOH extracts of TMAHP–SWM and TMAHP–holocellulose as well as the water‐soluble fraction from TMAHP–holocellulose are polymeric materials. From TMAHP–SWM only 3.1 of alkali‐soluble material could be extracted, while from TMAHP–holocellulose 15.7 of water‐soluble and 7.9 of alkal