Rheology of Hydrophobically Modified Polyacrylamide-co-poly(acrylic acid) on Addition of Surfactant and Variation of Solution pH

Langmuir ◽  
2004 ◽  
Vol 20 (12) ◽  
pp. 4859-4866 ◽  
Author(s):  
Yan Li ◽  
Jan C. T. Kwak
Keyword(s):  
Acrylic Acid ◽  
Solution Ph ◽  
Hydrophobically Modified Polyacrylamide ◽  
Hydrophobically Modified ◽  
Modified Polyacrylamide ◽  
Poly Acrylic Acid

scholarly journals Interaction and Adsorption of Hydrophobically Modified Polyacrylamide on Silica and Asphaltene Surfaces

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Wenjie Zou ◽  
Zichuan Fang ◽  
Zhijun Zhang ◽  
Zhenzhen Lu
Keyword(s):  
Oil Recovery ◽  
Adhesion Force ◽  
Interaction Mechanism ◽  
Surface Force ◽  
Industrial Applications ◽  
Oil Sand ◽  
Continuous Adsorption ◽  
Hydrophobically Modified Polyacrylamide ◽  
Hydrophobically Modified ◽  
Modified Polyacrylamide

The adsorption of polymers affects the cost and oil recovery in oil reservoir exploitation and the flocculation effect in the treatment of oil sand tailings. The adhesion and adsorption of a hydrophobically modified polyacrylamide (HMPAM), i.e., P(AM-NaAA-C16DMAAC), on silica and asphaltene were investigated using surface force measurements, thermodynamic analysis and quartz crystal microbalance with dissipation (QCM-D) measurement. Our study indicates that HMPAM polymer has strong interaction with both silica and asphaltene. The adhesion force of HMPAM on silica was stronger than that on asphaltene surface. Consistently, the adsorption of HMPAM was also greater on silica surface, with a more rigid layer formed on the surface. For HMPAM/silica system, the attractive interaction and the strong adhesion are mainly driven by the hydrogen bonding and electrostatic interaction. For HMPAM/asphaltene system, it is mainly due to hydrophobic interaction between the long hydrocarbon chains of HMPAM and asphaltene. Furthermore, continuous adsorption of HMPAM was detected and multiple layers formed on both silica and asphaltene surfaces, which can be attributed to the hydrophobic chains of HMPAM polymers. This work has illustrated the interaction mechanism of HMPAM polymer on hydrophilic silica and hydrophobic asphaltene surfaces, which provide insight into the industrial applications of hydrophobically modified polymer.

scholarly journals Waste activated sludge (WAS) dewatering properties of an original hydrophobically modified polyacrylamide containing a cationic microblock structure

RSC Advances ◽  
2017 ◽  
Vol 7 (46) ◽  
pp. 28733-28745 ◽  
Author(s):  
Yuhao Zhou ◽  
Huaili Zheng ◽  
Baoyu Gao ◽  
Yingpeng Gu ◽  
Xiang Li ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Hydrophobically Modified Polyacrylamide ◽  
The Core ◽  
Hydrophobically Modified ◽  
Modified Polyacrylamide

Chemical conditioning, as one of the core technologies used for the dewatering pretreatment of sludge, can efficiently improve the dewaterability of WAS and hence reduce the expense of the transportation and disposal of WAS.

scholarly journals Effects Of Environmental Factors On The Dispersion Behavior Of Iron Oxide In Aqueous Solutions With Poly Acrylic Acid

2015 ◽  
Vol 60 (2) ◽  
pp. 1561-1564
Author(s):  
E.-H. Lee ◽  
K.-M. Kim ◽  
W.-Y. Maeng ◽  
D.-H. Hur
Keyword(s):  
Molecular Weight ◽  
Acrylic Acid ◽  
High Molecular Weight ◽  
Low Molecular Weight ◽  
Solution Ph ◽  
Molecular Weights ◽  
Aqueous Suspensions ◽  
Magnetite Particles ◽  
The Stability ◽  
Poly Acrylic Acid

Abstract After preparing aqueous suspensions from magnetite particles with a poly-acrylic acid, we investigated the effects of several experimental parameters. We characterized the stability of the suspensions using visual inspection, sedimentation, adsorption, and thermal stability of the dispersant. The dispersion stability is affected by the solution pH, the concentrations of magnetite particles, the molecular weight, the concentration of the dispersants, and the temperature. The stability of the suspensions increased as the concentration of the dispersant and the temperature increased. In terms of the molecular weights of the dispersant, the suspensions with dispersant of low-molecular weight (1800) were more stable than those of high-molecular weight (250000) at room temperature. However, at high temperature the suspensions with high-molecular weight showed stability. The adsorption efficiency of the dispersant was very low. The dispersant of high-molecular weight showed a higher thermal integrity than that of low-molecular weight. From this work, we obtained the optimum conditions for stable aqueous suspensions of magnetite particles.

Adsorption of Hydrophobically Modified Poly(acrylic acid) Sodium Salt at the Air/Water Interface by Combined Surface Tension and X-ray Reflectivity Measurements

Langmuir ◽  
1999 ◽  
Vol 15 (6) ◽  
pp. 2112-2119 ◽  
Author(s):  
Frédéric Millet ◽  
Michael Nedyalkov ◽  
Benjamin Renard ◽  
Patrick Perrin ◽  
Françoise Lafuma ◽  
...  
Keyword(s):  
Surface Tension ◽  
Acrylic Acid ◽  
Sodium Salt ◽  
Water Interface ◽  
X Ray ◽  
Hydrophobically Modified ◽  
Acid Sodium Salt ◽  
Air Water Interface ◽  
Poly Acrylic Acid

Boundary lubricating properties of hydrophobically modified polyacrylamide

RSC Advances ◽  
2016 ◽  
Vol 6 (7) ◽  
pp. 5695-5702 ◽  
Author(s):  
Heng Su ◽  
Xiang Wang ◽  
Miao Du ◽  
Yihu Song ◽  
Qiang Zheng
Keyword(s):  
Significant Role ◽  
Boundary Lubrication ◽  
Adsorption Layer ◽  
Hydrophobically Modified Polyacrylamide ◽  
Hydrophobically Modified ◽  
Intermolecular Association ◽  
Modified Polyacrylamide ◽  
Lubricating Properties

Intermolecular association rather than the robust adsorption layer plays a significant role in boundary lubrication.

Hydrophobically modified polyelectrolytes II: synthesis and characterization of poly(acrylic acid-co-alkyl acrylate)

2001 ◽  
Vol 12 (11-12) ◽  
pp. 616-625 ◽  
Author(s):  
Dong-qing Zhuang ◽  
Jie Chen Ai-hua Da ◽  
Yun-xiang Zhang ◽  
Reinhold Dieing ◽  
Lian Ma ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Synthesis And Characterization ◽  
Hydrophobically Modified ◽  
Alkyl Acrylate ◽  
Poly Acrylic Acid
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