Extensive study is done by Bigand et al.on
cationization of xylan or galactomannan (guar)
by using 2,3-epoxypropyltrimethylammonium
chloride (ETA) as etherifying agents under
alkaline conditions. Reaction conditions were
optimized to obtain derivatives with maximum
DS value. They succeed to obtain DS value of
1.3 and maximum grafting rate of
48%.Derivatives was characterized by 1HNMR,
13C-NMR, IR or elemental analysis.
Reaction Mechanism is same as shown in
Scheme 1.