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Préparation et caractérisation de produits amylacés polytransformés Partie 2. Caractérisation rhéologique de carboxymethylamidons benzylés
Author(s) -
AbdElThalouth Par I.,
Schutz R. A.,
Colombe L.
Publication year - 1977
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19770290505
Subject(s) - rheology , viscosity , chemistry , materials science , polymer chemistry , chemical engineering , composite material , engineering
Preparation and Characterization of Polyfunctional Starch Products. Part 2. Rheological Characterization of Benzylated Carboxymethylstarches . “Higy” and “low” viscosity carboxymethylstarches and their benzylated derivatives were rheologically studied. For the shear rates of 3 to 700 sec −1 the rheological behaviour may be described by the power law T = K D n , from which n depends mainly from the volume occupied by the solvated solute. During benzylation a partial decarboxymethylation and some hydrolysis occured. Carboxymethylstarches treated in the same conditions as for benzylation but without benzylchloride, gave derivatives which were also rheologically characterized for comparison. The benzylated carboxymethylstarches of low viscosity have good sizing properties (paper and textile).