Microstructure and association property of hydrophobically modified polyacrylamide of a new family

Gao, Baojiao; Jiang, Liding; Liu, Kangkai

doi:10.1016/j.eurpolymj.2007.03.049

Cited by 51 publications

(33 citation statements)

References 25 publications

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“…The intrinsic viscosity [η] of polymer was obtained with the dilution extrapolation method. The intrinsic viscosity measurement was an approximation method due to the effect of intramolecular hydrophobic interaction on the determination of the viscosity-average molar mass for polymer [29]. The molar mass of polymer was determined by the Mark-HouwinkSakurada Equation (1): (1) where K = 4.75·10 -3 ml/g and α = 0.80.…”

Section: Measurementsmentioning

confidence: 99%

A new approach to the synthesis of hydrophobically associating polyacrylamide via the inverse miniemulsion polymerization in the presence of template

Gong

Zhang²

2009

Express Polym. Lett.

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Abstract. Cationic, hydrophobically associating polyacrylamide (PDA) was synthesized via the inverse miniemulsion polymerization in the presence of template. Dimethyloctane(2-acrylamidopropyl)ammoniumbromide (DOAB) was synthesized via quaternization reaction and used as the hydrophobic monomer. Polyacrylic acid (PAA) was used as template for the oppositely charged DOAB. The distribution of DOAB in the inverse miniemulsion and the solution viscosity behaviors of PDA were investigated. The results showed that the complexes of DOAB and PAA were located not only at the interface of the inverse miniemulsion droplets and oil phase but also in the interior of inverse miniemulsion droplets. PDA prepared with template exhibited remarkable enhancement of solution viscosity (thickening ability). And the optimal thickening ability was obtained when the aqueous phase pH was 6.5 and the ratio of DOAB to PAA was 1. The thickening ability of PDA was improved with increasing DOAB content. PDA prepared with template showed stronger association ability than that prepared without template for its longer hydrophobic block structure, which was further supported by the plots of fluorescence spectra.

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Section: Measurementsmentioning

confidence: 99%

A new approach to the synthesis of hydrophobically associating polyacrylamide via the inverse miniemulsion polymerization in the presence of template

Gong

Zhang²

2009

Express Polym. Lett.

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“…These associations result in an increase in the hydrodynamic size of the polymer that increases solution viscosity, as well as the association reaction between hydrophobic groups of these polymers and the organics in the wastewater. The potential exists to use water-soluble associating polymers as flocculants and mobility control agents in oil recovery [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of hydrophobically associating cationic polyacrylamide

Yang

Bao

et al. 2010

Chemical Engineering Journal

143

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“…The copolymers with different lengths of hydrophobic blocks can be synthesized by varying the amount of NaCl in the reaction system. 32 It was the combination of the two aspects that made a great influence on the performance of DTHAP.…”

Section: The Optimization Of the Synthesis Conditionsmentioning

confidence: 99%

A double‐tailed acrylamide hydrophobically associating polymer: Synthesis, characterization, and solution properties

Jiang

et al. 2015

J of Applied Polymer Sci

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In order to improve the salt resistant, temperature tolerance, and stability of the acrylamide-based copolymer, the doubletailed hydrophobically associating copolymer (DTHAP) was synthesized. The chemical and spatial network structures of the copolymer were characterized by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (NMR), and environmental scanning electron microscope (ESEM). The salt, temperature, aging resistance, and rheological behavior of the copolymer were investigated in detail. The experimental results showed that the performance of DTHAP were influenced by the amount of AA, PETMAM, SDS, and NaCl in the reaction system. Compared with HPAM, DTHAP solution showed excellent temperature resistance and salt tolerance. No matter in the solution varying NaCl or CaCl 2 concentration from 8 to 80 and 1 to 1.8 g/L, respectively, DTHAP behaved an obvious salt-thickening phenomenon. The simulative tertiary oil recovery tests at 808C indicated that DTHAP can remarkably enhance 16.9% of the oil recovery ratio. Even at 100 g/L salt solution, DTHAP exhibited an excellent performance which can also enhance 9.9% of oil recovery ratio. The experiment results indicated that DTHAP was superior to HPAM as a kind of oil displacement agent for enhanced oil recovery, especially in high-temperature and high-mineralization oil fields.

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Microstructure and association property of hydrophobically modified polyacrylamide of a new family

Cited by 51 publications

References 25 publications

A new approach to the synthesis of hydrophobically associating polyacrylamide via the inverse miniemulsion polymerization in the presence of template

A new approach to the synthesis of hydrophobically associating polyacrylamide via the inverse miniemulsion polymerization in the presence of template

Synthesis and characterization of hydrophobically associating cationic polyacrylamide

A double‐tailed acrylamide hydrophobically associating polymer: Synthesis, characterization, and solution properties

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