Hydrophobic aggregation in aqueous solutions of hydrophobically modified polyacrylamide in the vicinity of overlap concentration

The rheological behavior and hydrophobic association of hydrophobically modified polyacrylamide with 0.5 mol% of hydrophobic n-nonylacrylamide units were studied in the vicinity of the overlap concentration. It was shown that the rheological properties of aqueous polymer solutions are determined by...

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Bibliographic Details
Published in:	Polymer (Guilford) Vol. 44; no. 8; pp. 2289 - 2293
Main Authors:	Shashkina, Yu.A., Zaroslov, Yu.D., Smirnov, V.A., Philippova, O.E., Khokhlov, A.R., Pryakhina, T.A., Churochkina, N.A.
Format:	Journal Article
Language:	English
Published:	Oxford Elsevier Ltd 01-04-2003 Elsevier
Subjects:	Fluorescence spectroscopy Hydrophobically associating polymers Hydrophobically modified polyacrylamide Fluorescence spectroscopy Hydrophobically modified polyacrylamide Hydrophobically associating polymers
Online Access:	Get full text
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Summary:	The rheological behavior and hydrophobic association of hydrophobically modified polyacrylamide with 0.5 mol% of hydrophobic n-nonylacrylamide units were studied in the vicinity of the overlap concentration. It was shown that the rheological properties of aqueous polymer solutions are determined by the formation of hydrophobic domains playing a role of physical cross-links between polymer chains. It was observed that a pronounced increase of the viscosity above the overlap concentration is accompanied by the increase of the concentration of hydrophobic domains, but the average size of one domain remains constant.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0032-3861 1873-2291
DOI:	10.1016/S0032-3861(03)00043-0