Design, preparation and properties of new polyacrylamide based composite nano-microspheres with like “ball in ball” structure

Ma, Xinkai; Zhou, Yuhai; Yi, Ping G.; Zhou, Shuai; Wang, Yan

doi:10.1016/j.colsurfa.2022.130037

Cited by 14 publications

(4 citation statements)

References 42 publications

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“…In addition to a dense pore structure, they exhibit a certain spatial reticulation. Polyacrylamide–glutathione has a strong capacity for adsorption bridging, sweeping net trapping, and aggregation [ 44 , 45 ] due to its complex surface and mesh structure. This causes a continuous process of cadmium ion adsorption in the coagulation process, resulting in an enhanced coagulation performance.…”

Section: Discussionmentioning

confidence: 99%

Preparation of Heavy Metal Trapping Flocculant Polyacrylamide–Glutathione and Its Application for Cadmium Removal from Water

et al. 2023

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In this study, a heavy metal trapping gel with multiple ligand groups was prepared for the first time using response surface methodology. The gel was produced by condensing and grafting glutathione as a grafting monomer onto the main polyacrylamide chain, based on the Mannich reaction mechanism with formaldehyde. FTIR, SEM, TG-DSC, and zeta potentials were used to characterize the gel. The results demonstrated that the gel was morphologically folded and porous, with a net-like structure, which enhanced its net trapping and sweeping abilities, and that glutathione was used to provide sulfhydryl groups to boost the metal trapping ability of polyacrylamide. Coagulation experiments showed that the highest efficiency of the removal of Cd ions from water samples was achieved when the concentration of polyacrylamide–glutathione was 84.48 mgL−1, the concentration of Cd was 10.0 mgL−1, the initial turbidity was 10.40 NTU, and the initial pH was 9.0. Furthermore, the presence of two cations, Cu and Zn, had an inhibitory effect on the removal of Cd ions. In addition, analysis of the zeta potential revealed the flocculation of polyacrylamide–glutathione. The flocculation mechanism of glutathione is mainly chelation, adsorption bridging, and netting sweeping.

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Section: Discussionmentioning

confidence: 99%

Preparation of Heavy Metal Trapping Flocculant Polyacrylamide–Glutathione and Its Application for Cadmium Removal from Water

et al. 2023

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“…The synthesized polymer microspheres have a particle size distribution ranging from 10 to 100 nm, and exhibit advantages such as small particle size, narrow size distribution, fast reaction rate, well dispersibility, and high stability. Ma et al [10] introduced complex emulsifiers into the plant oil as the oil phase, dissolved a certain proportion of hyperbranched polyacrylamide (HBPAM), AM, AMPS, and MBA crosslinking agent in distilled water as the water phase. Using the APS-sodium bisulfite redox system as the initiator, a new type of polymer microspheres with like "ball in ball" structure was synthesized via inverse microemulsion polymerization.…”

Section: Preparation Of Nanoscale Microspheresmentioning

confidence: 99%

Research Progress on Functionalized Polymer Microspheres for Deep Profile Control and Flooding

2024

AJMC

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Based on a comprehensive review of literatures concerning polymer microspheres for enhanced oil recovery over the past five years, this paper centers on profile control agents composed of acrylamide, providing a detailed overview of the preparation methods of functionalized polymer microspheres. According to the functional characteristics, the research progress of fluorescent polymer microspheres, smart polymer microspheres, and organic-inorganic nanocomposite microspheres is highlighted. Additionally, the characterization parameters and methods of polymer microspheres are summarized. The challenges and issues associated with the application of polymer microspheres in deep profile control and oil displacement technologies are discussed, which holds significant implications for the development of heterogeneous and low-permeability oil reservoirs.

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“…Therefore, it is extremely urgent to strengthen the research on related materials and technology to enhance oil recovery. − Water flooding, as the most commonly used oil displacement method in various oilfields in the world, has a number of benefits of low cost, simple operation, and environmental protection, but it is facing various severe challenges in enhanced oil recovery. − Water channeling, water fingering, and even water monolayer break-through result from long-term water erosion that aggravates the heterogeneity of reservoirs as a result of ongoing water flooding, which causes reservoir development to reach the high water-cut stage. The existence of preferential flow paths such as natural channels and the effectiveness of several types of displacement agents were significantly decreased by fractures, leading the remaining oil distribution to be highly dispersed, the remaining crude oil in the reservoir to be incapable of being effectively retrieved in substantial quantities, and the heterogeneity of the reservoir to be intensified after the water flooding. − Moreover, a large amount of produced water will increase the costs of pipelines, oil–water separation, etc. Thus, enhancing oil recovery in heterogeneous reservoirs requires management of the water cut and blocking of favored flow routes.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Temperature- and Salt-Resistant CP(AM-AMPS-DMDAAC) Nanospheres for Oil Displacement

Li,

Zhou

et al. 2024

ACS Appl. Polym. Mater.

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Polymer nanospheres are commonly used in scientific and industrial fields including petroleum, electronics, and biomedicine. The precise synthesis of polymer nanospheres with a controllable size and regular shape is important for achieving thermal stability and mechanical properties, which will directly affect the oil displacement effect. In this paper, amphoteric CP(AM-AMPS-DMDAAC) nanospheres with a small particle size and regular shape were prepared by using an acrylamide (AM), 2-acrylamide-2methylpropanesulfonic acid (AMPS), diallyl dimethylammonium chloride (DMDAAC), and methylene-bis-acrylamide mixed solution as the aqueous phase and Span-80 and Tween-80 as the composite emulsifier, followed by reverse-phase microemulsion polymerization. The results showed that nanospheres had temperature and salt resistance and excellent physical and chemical properties. The thermal decomposition temperature was 236.5 °C, the median size of the particles was close to 50 nm, the swelling factor remained at 6.1 nm/nm after water absorption and expansion in the formation water at 120 °C for 7 days, and the swelling factor was 10.4 nm/nm after 14 days. In addition, nanospheres also exhibit good viscoelasticity and pseudoplasticity. The average plugging rate was 79.5% in the low permeability cores, and after the injection of the CP(AM-AMPS-DMDAAC) nanospheres based on water flooding, the average enhanced recovery rate was 13.46%.

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Design, preparation and properties of new polyacrylamide based composite nano-microspheres with like “ball in ball” structure

Cited by 14 publications

References 42 publications

Preparation of Heavy Metal Trapping Flocculant Polyacrylamide–Glutathione and Its Application for Cadmium Removal from Water

Preparation of Heavy Metal Trapping Flocculant Polyacrylamide–Glutathione and Its Application for Cadmium Removal from Water

Research Progress on Functionalized Polymer Microspheres for Deep Profile Control and Flooding

Synthesis and Properties of Temperature- and Salt-Resistant CP(AM-AMPS-DMDAAC) Nanospheres for Oil Displacement

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