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

被引：120
作者：
Shashkina, YA
Zaroslov, YD
Smirnov, VA
Philippova, OE [1 ]
Khokhlov, AR
Pryakhina, TA
Churochkina, NA
机构：
[1] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 117234, Russia
[2] Russian Acad Sci, Nesmeyanov Inst Organoelement Cpds, Moscow 117813, Russia
来源：
POLYMER | 2003年 / 44卷 / 08期
关键词：
hydrophobically associating polymers; fluorescence spectroscopy; hydrophobically modified polyacrylamide;
D O I：
10.1016/S0032-3861(03)00043-0
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
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. (C) 2003 Elsevier Science Ltd. All rights reserved.
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收藏
页码：2289 / 2293
页数：5
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