Toward an improved understanding of emulsion stabilization at elevated temperatures by direct visualization and reversibility analysis

Chen, Qiang; Yang, Huijie; Liu, Yindong; Yu, Kai; Zhao, Dongfeng

doi:10.1016/j.molliq.2022.120563

Cited by 4 publications

(1 citation statement)

References 58 publications

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“…Pickering emulsions show great potential in the petroleum industry . Compared with traditional viscosity reducers, nanoparticle viscosity reducers are low-cost, environmentally friendly, thermally stable, and reusable. ,, Compared with traditional surfactant-stabilized emulsion systems, Pickering emulsion systems have higher resistance to agglomeration and deformation, as well as more significant kinetic stability . Due to the unique properties such as low cost, high purity, large specific surface area, easy surface modification, and controllable size, SiO 2 is considered as one of the most promising NPs in chemicals, bioproducts, materials, and industries.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Temperature-Sensitive SiO₂–PSBMA for Reducing the Viscosity of Heavy Oil

Wang

et al. 2023

Energy Fuels

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Viscosity reduction by emulsification is one of the most effective methods for the recovery of heavy oil. Nanoparticles with low toxicity and low cost can stabilize oil-in-water (O/W) Pickering emulsions to reduce the viscosity of heavy oil and thereby have become a new type of emulsifier in recent years. The stimuli-responsive emulsions formed by responsive particles can achieve emulsification and demulsification under external stimuli, providing convenient conditions for heavy oil transportation and recovery, where the temperature response is easier to achieve. In this study, six groups of temperature-sensitive SiO2–PSBMA (PSBMA: polysulfobetaine methacrylate) with different particle sizes were prepared by the reverse atom transfer radical polymerization (RATRP) method. The morphologies of SiO2 particles before and after grafting were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and atomic force microscopy (AFM), and the structure of the product was characterized by Fourier transform infrared (FT-IR) spectroscopy, which showed that PSBMA was successfully grafted to SiO2. The grafting ratios (η) of six groups of SiO2–PSBMA measured by thermogravimetric analysis (TGA) were similar (34.50–42.94%). The temperature sensitivity of SiO2–PSBMA was determined by dynamic light scattering (DLS) and the contact angles at different temperatures, which showed that its upper critical solution temperature (UCST) was about 40–50 °C. SiO2–PSBMA was applied to GD2 heavy oil to reduce the viscosity at 60 °C, which showed that the SiO2–PSBMA had a good emulsification effect. With the increase of particle size, the viscosity reduction rate (VRR) showed a trend of first increase and then decrease. The highest VRR was 96.41%, achieved by 227.61 nm SiO2–PSBMA. All of the emulsions stabilized by SiO2–PSBMA were able to demulsify at room temperature. It can be used as an intelligent temperature-responsive viscosity reducer for heavy oil to control emulsions on demand.

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Section: Introductionmentioning

confidence: 99%

Preparation of Temperature-Sensitive SiO₂–PSBMA for Reducing the Viscosity of Heavy Oil

Wang

et al. 2023

Energy Fuels

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Physicochemical characterization and environmental stability of a curcumin-loaded Pickering nanoemulsion using a pea protein isolate-dextran conjugate via the Maillard reaction

Kim,

Yong,

Chun

et al. 2024

Food Chemistry

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Structure, characterization, and application of a novel thermoreversible emulsion gel fabricated by citrate agar

Zhao,

Jiang,

Fang

et al. 2024

International Journal of Biological Macromolecules

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Toward an improved understanding of emulsion stabilization at elevated temperatures by direct visualization and reversibility analysis

Cited by 4 publications

References 58 publications

Preparation of Temperature-Sensitive SiO₂–PSBMA for Reducing the Viscosity of Heavy Oil

Preparation of Temperature-Sensitive SiO₂–PSBMA for Reducing the Viscosity of Heavy Oil

Physicochemical characterization and environmental stability of a curcumin-loaded Pickering nanoemulsion using a pea protein isolate-dextran conjugate via the Maillard reaction

Structure, characterization, and application of a novel thermoreversible emulsion gel fabricated by citrate agar

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Toward an improved understanding of emulsion stabilization at elevated temperatures by direct visualization and reversibility analysis

Cited by 4 publications

References 58 publications

Preparation of Temperature-Sensitive SiO2–PSBMA for Reducing the Viscosity of Heavy Oil

Preparation of Temperature-Sensitive SiO2–PSBMA for Reducing the Viscosity of Heavy Oil

Physicochemical characterization and environmental stability of a curcumin-loaded Pickering nanoemulsion using a pea protein isolate-dextran conjugate via the Maillard reaction

Structure, characterization, and application of a novel thermoreversible emulsion gel fabricated by citrate agar

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Product

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Preparation of Temperature-Sensitive SiO₂–PSBMA for Reducing the Viscosity of Heavy Oil

Preparation of Temperature-Sensitive SiO₂–PSBMA for Reducing the Viscosity of Heavy Oil