Wettability and evaporation of sodium dodecyl sulfate aqueous droplets on microhole-patterned polydimethylsiloxane surfaces under a direct current electric field

Xu, Shuai; Jiang, Biao; Huang, Xianfu; Lu, Yingfa; Yu, Yingsong

doi:10.1016/j.colsurfa.2023.133036

Cited by 2 publications

(1 citation statement)

References 52 publications

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“…In this study, to develop an excellentperforming microfoam, a comparison was made among 10 common foaming agents. Ultimately, a foaming agent consisting of 20% sodium alpha-olefin sulfonate (AOS) 58 and 80% sodium dodecyl sulfate (SDS) 59 is selected, with an optimal usage concentration range of 0.2 to 0.6%. Biopolymer XC (xanthan gum), 60 vinyl monomer copolymer (PAC-141), 61 carboxymethyl cellulose sodium (CMC-Na), 62 polyacrylic amide (PAM), 63 and hydroxyethyl cellulose (HEC) 64 and excellent-performing foam stabilizers.…”

Section: Methodsmentioning

confidence: 99%

Preferred Ratio and Properties of Microfoam Drilling Fluid for Gas Extraction in Soft Coal Seams

Cheng,

Hou,

Luo

et al. 2024

Energy Fuels

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During the gas extraction drilling process, especially the soft coal seam drilling process, due to the constraints of geological conditions, technical conditions, and other factors, it is easy to encounter stuck holes, blowout, lost circulation, and hole collapse, which affect the realization of efficient gas management. In the petroleum industry, microfoam drilling fluid has unique advantages as a drilling and flushing medium. Through the response surface method, this study conducts a preliminary experimental study on the types of foaming agents, foam stabilizers, modified bentonite materials, and filtrate reducers and determines the optimal formula as 3.98% modified bentonite + 0.586% compound foaming agent + 0.776% foam stabilizer + 1% sulfonated phenolic resin + 2% carboxymethyl starch sodium. The performance of the microfoam drilling fluid system is tested. Subsequently, a simulated soft coal seam drilling test is carried out to verify the effectiveness of the developed directional microfoam drilling fluid for protecting coal rock holes. This microfoam drilling fluid system technology can improve the drilling quality of the sealing section of coal seam gas extraction drilling and effectively improve the gas extraction rate of coal mines.

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Section: Methodsmentioning

confidence: 99%

Preferred Ratio and Properties of Microfoam Drilling Fluid for Gas Extraction in Soft Coal Seams

Cheng,

Hou,

Luo

et al. 2024

Energy Fuels

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Sessile droplet evaporation in the uniform electric field: A lattice Boltzmann method study

Ouyang,

Wang,

Wang

et al. 2025

Physics of Fluids

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Droplet evaporation plays a critical role in nature, science, and industrial applications. The electric field is usually regarded as an effective method to enhance heat and mass transfer. In this work, the evaporation of sessile droplets in the uniform electric field has been numerically studied coupling the mass, momentum, energy, and Poisson equations solved by a lattice Boltzmann method. The results indicate that the heat transfer is affected by the electric field, wettability, and liquid physical properties. The deformation direction of the droplet in the electric field depends on the liquid physical properties, where the prolate deformation occurs with Rσ>Sε and the oblate deformation occurs with Rσ<Sε. When the contact angle is 90°, for a prolate droplet, the evaporation is first enhanced and then hindered in the presence of an electric field, while for an oblate droplet, the evaporation is constantly improved. When the droplet is placed on the hydrophilic (θ0=40°) surface or hydrophobic (θ0=140°) surface, the influence of the electric field gets complicated. The synergistic effect of the electric field and wettability on droplet evaporation strongly depends on the completion of heat convection between the gas and liquid, and heat conduction between the liquid and substrate.

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Wettability and evaporation of sodium dodecyl sulfate aqueous droplets on microhole-patterned polydimethylsiloxane surfaces under a direct current electric field

Cited by 2 publications

References 52 publications

Preferred Ratio and Properties of Microfoam Drilling Fluid for Gas Extraction in Soft Coal Seams

Preferred Ratio and Properties of Microfoam Drilling Fluid for Gas Extraction in Soft Coal Seams

Sessile droplet evaporation in the uniform electric field: A lattice Boltzmann method study

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