TY - JOUR
T1 - Preparation and calcium complexation of oxidized polysaccharides : II. hydrogen peroxide as coreactant in the chlorite oxidation of dialdehyde glucans
AU - Floor, M.
AU - Hofsteede, L.P.M.
AU - Groenland, W.P.T.
AU - Verhaar, L.A.T.
AU - Kieboom, A.P.G.
AU - van Bekkum, H.
PY - 1989
Y1 - 1989
N2 - A series of dialdehyde glucans (obtained from starch, amylose, amylopectin, maltodextrin, cellulose, and dextran by periodate glycol cleavage) were oxidized to the corresponding dicarboxy polysaccharides by the combined use of NaClO3 and H2O2 (two moles of each per mol dialdehyde moieties). As compared to the conventional method (using 6 mol of chlorite and no peroxide), this new procedure reduced oxidant costs by a factor of 2.5, avoided the evolution of toxic ClO2, and more selectively yielded dicarboxy polysaccharides of high mol. wt. with excellent Ca complexing properties. The products thus obtained were potentially attractive co-builders in phosphate-free detergents.
AB - A series of dialdehyde glucans (obtained from starch, amylose, amylopectin, maltodextrin, cellulose, and dextran by periodate glycol cleavage) were oxidized to the corresponding dicarboxy polysaccharides by the combined use of NaClO3 and H2O2 (two moles of each per mol dialdehyde moieties). As compared to the conventional method (using 6 mol of chlorite and no peroxide), this new procedure reduced oxidant costs by a factor of 2.5, avoided the evolution of toxic ClO2, and more selectively yielded dicarboxy polysaccharides of high mol. wt. with excellent Ca complexing properties. The products thus obtained were potentially attractive co-builders in phosphate-free detergents.
U2 - 10.1002/recl.19891081011
DO - 10.1002/recl.19891081011
M3 - Article
SN - 0165-0513
VL - 108
SP - 384
EP - 392
JO - Recueil des Travaux Chimiques des Pays-Bas
JF - Recueil des Travaux Chimiques des Pays-Bas
IS - 10
ER -