Study on the key performance and stabilization mechanism of viscoelastic scCO2 foams: The formation of pseudo-gemini surfactants
文献类型：期刊论文
| 作者 | Zheng, Nanxin1,3; Zhu, Jingyi1; Yang, Zhaozhong1; Jiang, Zhiqiang2; Li, Xiaogang1; Zhang, Liehui1; Li, Qi3 ; Wen, Yiping3
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| 刊名 | JOURNAL OF MOLECULAR LIQUIDS
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| 出版日期 | 2024-04-01 |
| 卷号 | 399页码:13 |
| 关键词 | scCO 2 foam Pseudo-gemini surfactant Wormlike micelles Foam stabilization mechanism Microstructure |
| ISSN号 | 0167-7322 |
| DOI | 10.1016/j.molliq.2024.124477 |
| 英文摘要 | Worm-like micelles have been recognized as "living polymers," and their outstanding physicochemical properties provide unique advantages in improving foam stability. Recently, the use of pseudo-Gemini surfactants to create worm-like micelles has garnered substantial attention because of their cost-effectiveness and high performance. However, there is a dearth of research on the key properties of scCO2 foam stabilized by pseudo-Gemini surfactants and the mechanism behind their stabilizing effect. To address this gap, a scCO2 foam system stabilized by worm-like micelles was constructed using pseudo-Gemini surfactants. Through a combination of surface properties, bulk rheology, dynamic light scattering (DLS), and cryo-scanning electron microscopy (Cryo-SEM) measurements, the synergistic effect and foam stabilization mechanism of oleic amidopropyl betaine (OAB) and alpha-olefin sulfonate sodium (AOS) were investigated. The results confirmed the formation of pseudo-Gemini surfactants in the mixed system (OAB + AOS), with superior surface activity compared with individual surfactants. Furthermore, the assembly parameter P = 0.498, determined through interfacial parameter analysis, indicated the self-assembly of worm-like micelles in the mixed system. The rheological properties of the foam liquid, as well as foam drainage, and coarsening experiments showed that the presence of worm-like micelles increased the elasticity of the liquid film, impeding the contraction and expansion of the foam. This resulted in a 145 % increase in the liquid drainage half-life of the scCO2 foam and a 19.3 % reduction in the diffusion rate of scCO2 in the liquid film. Further evidence from DLS and Cryo-SEM confirmed the formation of robust worm-like micelle structures in the OAB + AOS mixed system, enhancing the ability of the liquid film to withstand external disturbances. This study is crucial for advancing the existing understanding of pseudo-Gemini surfactants in terms of improving foam performance and designing effective small-molecule foam fracturing fluids. |
| 资助项目 | Key Program of National Natural Science Foundation of China[52234003] ; Scientific Research Starting Project of SWPU[2021QHZ035] ; China Postdoctoral Science Foundation[2023 M733711] ; Innovative Postdoctoral Research Funding of Hubei Province[2022000171] |
| WOS研究方向 | Chemistry ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001219182700001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41249]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhu, Jingyi; Yang, Zhaozhong |
| 作者单位 | 1.Southwest Petr Univ, Natl Key Lab Oil & Gas Reservoir Geol & Exploitat, Chengdu 610500, Sichuan, Peoples R China 2.Changqing Oilfield Co, Oil & Gas Technol Res Inst, Xian 710018, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Nanxin,Zhu, Jingyi,Yang, Zhaozhong,et al. Study on the key performance and stabilization mechanism of viscoelastic scCO2 foams: The formation of pseudo-gemini surfactants[J]. JOURNAL OF MOLECULAR LIQUIDS,2024,399:13. |
| APA | Zheng, Nanxin.,Zhu, Jingyi.,Yang, Zhaozhong.,Jiang, Zhiqiang.,Li, Xiaogang.,...&Wen, Yiping.(2024).Study on the key performance and stabilization mechanism of viscoelastic scCO2 foams: The formation of pseudo-gemini surfactants.JOURNAL OF MOLECULAR LIQUIDS,399,13. |
| MLA | Zheng, Nanxin,et al."Study on the key performance and stabilization mechanism of viscoelastic scCO2 foams: The formation of pseudo-gemini surfactants".JOURNAL OF MOLECULAR LIQUIDS 399(2024):13. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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