Adsorption–desorption behavior of the hydrophobically associating copolymer AM/APEG/C-18/SSS

Quan, Hongping; Lu, Qi; Chen, Zhonghao; Huang, Zhiyu; Jiang, Qiaorong

doi:10.1039/c9ra01932d

Cited by 10 publications

(10 citation statements)

References 28 publications

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“…Its mechanism is chemisorption on the surface of the medium by electrostatic and hydrogen bonding forces, forming a stable monolayer feature [ 27 , 28 ]. For hydrophobically associating polymers, the free polymer solution molecules are entangled with the adsorbed polymer molecules due to association, which exhibits a multimolecular layer with increasing adsorption [ 29 , 30 ]. However, there are only a few reports on the adsorption mechanism of dendrimers.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Characteristics of Polymer Solutions on Media Surfaces and Their Main Influencing Factors

Zhu

Liu

et al. 2021

Polymers

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In practical applications, the chemical and physical adsorption of a polymer solution greatly affects its action mode and effect. Understanding the adsorption mechanism and its influencing factors can help to optimize the application mode and ensure application efficiency. Three types of polymer solutions—partially hydrolyzed polyacrylamide (HPAM), hydrophobically associating polymer (AP-P4), and dendrimer hydrophobically associating polymer (DHAP), which are viscoelastic liquids—were used as sorbates to study their adsorption by a sorbent such as quartz sand. The effects of the solution concentration, contact time, particle size of quartz sand, solid–liquid ratio, and fluid movement on the adsorption capacity of the polymer solutions were examined. The results showed that HPAM presents a typical Langmuir monolayer adsorption characteristic, and its adsorption capacity (per unit area) is 1.17–1.62 μg/cm2. The association enhances the interactions of the AP-P4 and DHAP solutions, and they present multilayer characteristics of first-order chemical adsorption and secondary physical molecule adsorption. Moreover, the dendrite structure further increases the adsorption thickness of DHAP. Hence, the adsorption thicknesses of AP-P4 and DHAP are four and six times that of HPAM, respectively. The adsorption of the three polymers is consistent with the influence of fluid motion and decreases with increasing fluid velocity. However, the larger the thickness of the adsorption layer, the clearer the influence of the flow, and the higher the decrease in adsorption capacity. Optimizing the injection rate is an effective method to control the applications of a polymer in porous media.

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Section: Introductionmentioning

confidence: 99%

Adsorption Characteristics of Polymer Solutions on Media Surfaces and Their Main Influencing Factors

Zhu

Liu

et al. 2021

Polymers

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“…The use of FTIR alone cannot give a complete description of the molecular structure of a polymer, hence it is used along with NMR for a complete characterization of the molecular configuration. This was the case when Quan et al (2019) characterized a hydrophobically associating polymers which was abbreviated as HPAAT. The polymer was synthesized from acrylamide (AM), allyl polyethylene-1000 (APEG), octadecyl dimethyl allyl ammonium chloride (DMDAAC-18) and sodium styrene sulfonate (SSS) using FTIR and 1 H-NMR spectroscopy.…”

Section: Hydrophobically Associating Polymersmentioning

confidence: 99%

“…Similarly, the adsorption of crude oil tends to reduce the tendency of polymer-rock interaction (Chiappa et al, 1999;Taheri-Shakib et al, 2019(a);Taheri-Shakib et al, 2019(b)). Quan et al (2019) reported the use of HAPAM polymers in the acidification process of carbonate rocks. The adsorption of the associative polymer was such that it forms a protective film on the carbonate rock.…”

Section: Adsorption Properties Of Associating Polymersmentioning

confidence: 99%

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Hydrophobically associating polymers for enhanced oil recovery – Part A: A review on the effects of some key reservoir conditions

Afolabi

Oluyemi

Officer

et al. 2019

Journal of Petroleum Science and Engineering

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Research advancement in polymer flooding for Enhanced Oil Recovery (EOR) has been growing over the last decade. This growth can be tied to increased funding towards the development of superior polymers such as hydrophobically associating polymers when oil prices were high and increasing concern that "easy oil" has been exploited with the focus now on "difficult to extract" oil. The use of hydrophobically associating polymers for EOR was discussed along with its limitations. In this context, the improved rheological properties of associating polymers cannot only be linked to the molecular structures arising from different synthesis methods. Equally, external parameters similar to conditions of oil reservoirs affect the rheological properties of these polymers. As such, this review placed critical emphasis on the molecular architecture of the polymer and the synthesis route and this was linked to the observed rheological properties. In addition, the influence of some key oilfield parameters such as temperature, salinity, pH, and reservoir heterogeneity on the rheological behaviour of hydrophobically associating polymers were reviewed. In this respect, the various findings garnered in understanding the correlation between polymer rheological properties and oilfield parameters were critically reviewed. For associating polymers, an understanding of the molecular architecture (and hence the synthesis method) is crucial for its successful design. However, this must be theoretically linked to the preferred EOR application requirements (based on oilfield parameters).

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“…However, the former has the shortcomings of large dosage and high price, the latter mainly reduces the acid-rock reaction through the method of adsorbed lm. Quan's [20][21][22] research group proposed that a retarding acid with low viscosity could be adsorbed on the surface of carbonate rock and form a hydrated lm that would delay the acid-rock reaction, but no published research has described a study of which factors could inuence the lm-forming properties.…”

Section: Introductionmentioning

confidence: 99%

The effect of hydrophobic chains on retarding performance of retarding acids

Quan

Xuele

et al. 2022

RSC Adv.

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Adsorption–desorption behavior of the hydrophobically associating copolymer AM/APEG/C-18/SSS

Abstract: In this study, the acrylamide, allyl polyethylene-1000, octadecyl dimethyl allyl ammonium chloride, and sodium styrene sulfonate were chosen to synthesize a quadripolymer which with a hydrophobic association existed between molecules.

Cited by 10 publications

References 28 publications

Adsorption Characteristics of Polymer Solutions on Media Surfaces and Their Main Influencing Factors

Adsorption Characteristics of Polymer Solutions on Media Surfaces and Their Main Influencing Factors

Hydrophobically associating polymers for enhanced oil recovery – Part A: A review on the effects of some key reservoir conditions

The effect of hydrophobic chains on retarding performance of retarding acids

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