Synthesis, Characterization, Rheological Behavior, and Shear Response of Hydrophobically Modified Polyacrylamide and Network Structure of Its Microhydrogel

被引:23
作者
Jiang, Guoqing [2 ]
Huang, Li [2 ]
Li, Bo [2 ]
Lv, Changsen [2 ]
Li, Rui [3 ]
Liu, Fengqi [1 ]
机构
[1] Jilin Univ, Coll Chem, Changchun 130012, Peoples R China
[2] Daqing Oilfield Explorat & Dev Res Inst, Enhanced Oil Recovery Lab, Daqing 163712, Peoples R China
[3] Daqing Normal Univ, Coll Chem & Chem Engn, Daqing 163712, Peoples R China
关键词
hydrophobically modified polyacrylamide; micellar copolymerization; rheological behavior; network structure; WATER-SOLUBLE COPOLYMERS; HIGH MECHANICAL STRENGTH; ASSOCIATION HYDROGELS; AQUEOUS-SOLUTION; NANOCOMPOSITE HYDROGELS; MODIFIED POLYMERS; ACRYLAMIDE; SURFACTANT; ALKYLACRYLAMIDE; MICROSTRUCTURE;
D O I
10.1002/app.34371
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Octylphenol polyoxyethylene acrylate (OP10-AC) was synthesized, and then OP-10-AC was copolymerized with acrylamide (AM) to form hydrophobically modified polyacrylamide P(AM/OP-10-AC) through micellar copolymerization. OP-10-AC content and rheology behavior of P(AM/OP-10-AC) were investigated in detail. Especially, under the conditions of different test methods, P(AM/OP-10-AC) showed interesting shear responsive behavior. The results of rheology study show that OP-10-AC content, polymer solution concentration, salt solution concentration, and different test methods powerfully influenced shear viscosity of aqueous solutions of P(AM/OP-10-AC). In addition, according to the dynamic shear experimental results, the critical hydrogel concentration range (CHCR) could be confirmed for aqueous solutions of P(AM/OP-10-AC). Above CHCR, these polymer solutions were essentially a kind of microhydrogels, which could explain the effect of concentration and hydrophobe content on their shear viscosity and viscoelasticity from the microstructure's point of view. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: 66-76, 2012
引用
收藏
页码:66 / 76
页数:11
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