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Light Scattering and Viscosimetry Study of Star-Like Dextran-Graft-Polyacrylamide

Natalia Kutsevol, Mykola Bezuglyi and Nataliya Melnyk
DOI: 
https://doi.org/10.23939/chcht03.04.263
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Abstract: 
Dextran-graft-Polyacrylamide copolymers (D-g-PAA) with a polysaccharide backbone having different molecular weights (Mw = 20 000 and Mw = 70 000) and with various number of PAA-grafts per one Dextran macromolecule have been synthesized. Light scattering and viscometry investigations have shown that the internal structure of D-g-PAA copolymers depends upon the distance between PAA-grafts. Compactness of D20-g-PAA copolymers is lower in comparison with D70-g-PAA samples due to different conformations of PAA grafted chains: a “mushroom” conformation for D70-g-PAA and a “worm-like” one for D20-g-PAA samples.
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