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Light scattering behaviour of semi-dilute solutions of polyacrylamide

✍ Scribed by Ghouti Medjahdi; Dominique Sarazin; Jeanne Francois

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
563 KB
Volume
26
Category
Article
ISSN
0014-3057

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✦ Synopsis

The angular dependence of light scattered by aqueous semi-dilute solutions of unhydrolysed polyacrylamide has been systematically measured as a function of polymer molecular weight, concentration, temperature and time. The behaviour is similar to those already described for other systems of polymer-solvent in the same concentration regime and exhibit a high excess of intensity in the small angle range. These effects are attributed to macromolecule association due to a long range attractive potential; a new expression for the angular dependence of the scattered intensity is developed, taking into account this potential.

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