1
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Yang J, Kim H, Sung M, Cho I, Kim JW. High Internal Phase Emulsion Stabilization through Restricted Interdrop Fusion across Water Drainage Channels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:5670-5678. [PMID: 37053540 DOI: 10.1021/acs.langmuir.2c03190] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
This study introduces a promising approach to stabilize high internal phase emulsions (HIPEs) in which droplets are enveloped by octadecane (C18)-grafted bacterial cellulose nanofibers (BCNFdiC18), which are mainly surrounded by carboxylate anions and hydrophobically modified with C18 alkyl chains. For this purpose, BCNFdiC18, in which two octadecyl chains were grafted onto each of several cellulose unit rings on 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidized BCNFs, was fabricated using the Schiff base reaction. The wettability of BCNFdiC18 was adjusted by controlling the amount of the grafted C18 alkyl chain. Interfacial rheological analysis revealed that BCNFdiC18 enhanced the membrane modulus at the oil-water interface. We figured out that such a resilient interfacial membrane substantially prevented interdrop fusion across the water drainage channel formed between the jammed oil droplets, which was confirmed theoretically using the modified Stefan-Reynolds equation. These findings highlight that the use of surfactants in the form of nanofibers to form a rigid interfacial film plays a key role in hindering the interfusion of the internal phase and the collapse of the emulsion, which is essential for HIPE stabilization.
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Affiliation(s)
- Jongryeol Yang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hajeong Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Minchul Sung
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Inje Cho
- HINATURE Inc., Incheon 21984, Republic of Korea
| | - Jin Woong Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
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2
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Li W, Zeng H. Effect of temperature on the stability of supercritical CO2 foam stabilized with a betaine surfactant at high pressure. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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3
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Mixtures of CO2 and Poly(fluoroacrylate) Based on Monomers Containing Only Six or Four Fluorinated Carbons - Phase Behavior and Solution Viscosity. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2022.105728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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4
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Fonseca J, Gong T. Fabrication of metal-organic framework architectures with macroscopic size: A review. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214520] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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5
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Song X, Cui X, Jiang L, Ma N, Shu Y, Li J, Du D. Multi-parameter screening study on the static properties of nanoparticle-stabilized CO2 foam near the CO2 critical point. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2021.103676] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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6
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Effecting factor analysis to stability of ultra-dry CO2-in-water foams stabilized with zwitterionic surfactants, polymers and nanoparticles. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2021.105487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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7
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Chae J, Choi SQ, Kim K. The role of excess attractive particles in the elasticity of high internal phase Pickering emulsions. SOFT MATTER 2021; 18:53-61. [PMID: 34843612 DOI: 10.1039/d1sm01338f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A high internal phase emulsion (HIPE), which has a volume fraction of dispersed phase of over 74%, shows a solid-like property because of concentrated polyhedral droplets. Although many studies have proposed theoretical and empirical models to explain the rheological properties of HIPEs, most of them are only limited to the emulsions stabilized by surfactants. In the case of high internal phase Pickering emulsions (HIPPEs), much greater values of elastic modulus have been reported, compared to those of surfactant-stabilized HIPEs, but so far, there have been no clear explanations for this. In this study, we investigate how colloidal particles attribute to the significantly high elasticity of HIPPEs, specifically considering two different contributions, namely, interfacial rheological properties and bulk rheological properties. Our results reveal that the flocculated structures of colloidal particles that possess a significant elasticity can be interconnected between dispersed droplets. Furthermore, this elastic structure is a crucial factor in the high elasticity of HIPPEs, which is also supported by a simple theoretical model.
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Affiliation(s)
- Junsu Chae
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon, 34141, Korea.
| | - Siyoung Q Choi
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon, 34141, Korea.
| | - KyuHan Kim
- Department of Chemical and Biomolecular Engineering, SeoulTech, Seoul, 01811, Korea.
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8
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Majeed T, Kamal MS, Zhou X, Solling T. A Review on Foam Stabilizers for Enhanced Oil Recovery. ENERGY & FUELS 2021; 35:5594-5612. [DOI: 10.1021/acs.energyfuels.1c00035] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Affiliation(s)
- Talha Majeed
- Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
| | - Muhammad Shahzad Kamal
- Center for Integrative Petroleum Research, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Saudi Arabia
| | - Xianmin Zhou
- Center for Integrative Petroleum Research, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Saudi Arabia
| | - Theis Solling
- Center for Integrative Petroleum Research, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Saudi Arabia
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9
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Wang D, Yao J, Chen Z, Song W, Sun H, Yan X. Assessment of extended Derjaguin–Landau–Verwey–Overbeek‐based water film on multiphase transport behavior in shale microfractures. AIChE J 2021. [DOI: 10.1002/aic.17162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Dongying Wang
- School of Petroleum Engineering, China University of Petroleum (East China) Qingdao China
- Department of Chemical and Petroleum Engineering University of Calgary Calgary Alberta Canada
| | - Jun Yao
- School of Petroleum Engineering, China University of Petroleum (East China) Qingdao China
| | - Zhangxin Chen
- Department of Chemical and Petroleum Engineering University of Calgary Calgary Alberta Canada
| | - Wenhui Song
- School of Petroleum Engineering, China University of Petroleum (East China) Qingdao China
| | - Hai Sun
- School of Petroleum Engineering, China University of Petroleum (East China) Qingdao China
- Cullen College of Engineering, University of Houston Houston Texas USA
| | - Xia Yan
- School of Petroleum Engineering, China University of Petroleum (East China) Qingdao China
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10
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Wen J, Zhang Y, Jin H, Sui X, Jiang L. Deciphering the Structural Network That Confers Stability to High Internal Phase Pickering Emulsions by Cross-Linked Soy Protein Microgels and Their In Vitro Digestion Profiles. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:9796-9803. [PMID: 32786850 DOI: 10.1021/acs.jafc.0c03586] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
High internal phase Pickering emulsions (HIPPEs) stabilized by food-grade particles have received much attention in recent years. However, the stabilizing mechanism (e.g., structural network) in the continuous phase of HIPPEs stabilized by proteins is not well understood. In this work, we deciphered the stabilizing mechanisms that confer stability to HIPPEs produced from sunflower oil and soy protein microgels (SPMs). HIPPEs were fabricated at the protein concentrations of 1.50-2.00 wt % and oil volume fraction of 0.78-0.82. The cryo-scanning electron microscopy (cryo-SEM) observations indicated that there were two possible stabilizing mechanisms for HIPPEs at the protein concentrations of 1.50-2.00 wt %: the first is a stabilization provided by the shared monolayer of SPMs (at a protein concentration of 1.50%), and the other is stabilization provided by the distinct monolayer of SPMs (at protein concentrations of 1.75 and 2.00 wt %). The latter protein concentration created a thick network, formed by interacting SPMs, which trapped oil droplets. Results also confirmed that HIPPEs have an open-cell porous structure, forming a sponge-like morphology, where the internal phase was located. This study also investigated the digestibility of HIPPEs, suggesting a slower free fatty acid-releasing profile in in vitro intestinal digestion.
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Affiliation(s)
- Jiayu Wen
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Yan Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Hainan Jin
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Xiaonan Sui
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Lianzhou Jiang
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
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11
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Ma L, Bao L, Hu D, Zhao L, Liu T. Effect of interfacial properties on the stability of ultra-dry CO2-in-water (C/W) foams stabilized with zwitterionic surfactants and nonionic/anionic polymers: Experimental and DPD simulation. J Supercrit Fluids 2020. [DOI: 10.1016/j.supflu.2019.104722] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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12
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Gao H, Hu G, Liu K. High internal phase Pickering emulsions stabilized with graphene oxide in supercritical CO2 system. J Supercrit Fluids 2020. [DOI: 10.1016/j.supflu.2019.104654] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Li W, Wei F, Xiong C, Ouyang J, Shao L, Dai M, Liu P, Du D. A Novel Supercritical CO 2 Foam System Stabilized With a Mixture of Zwitterionic Surfactant and Silica Nanoparticles for Enhanced Oil Recovery. Front Chem 2019; 7:718. [PMID: 31737598 PMCID: PMC6828982 DOI: 10.3389/fchem.2019.00718] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 10/10/2019] [Indexed: 11/17/2022] Open
Abstract
In order to improve the CO2 foam stability at high temperature and salinity, hydrophilic silica nanoparticles (NPs) were added into a dilute zwitterionic surfactant solution to stabilize supercritical CO2 (SC-CO2) foam. In the present paper, the foaming capacity and stability of SC-CO2 foam were investigated as a function of NP concentration at elevated temperatures and pressures. It was observed that the drainage rate of SC-CO2 foam was initially fast and then became slower with NPs adsorption at the gas-liquid interface. The improved foam stability at high temperature was attributed to the enhanced disjoining pressure with addition of NPs. Furthermore, an obvious increase in the foam stability was noticed with the increasing salinity due to the screening of NP charges at the interface. The rheological characteristics including apparent viscosity and surface elasticity, resistance factor, and microstructures of SC-CO2 foam were also analyzed at high temperature and pressure. With addition of 0.7% NPs, SC-CO2 foam was stabilized with apparent viscosity increased up to 80 mPa·s and resistance factor up to 200. Based on the stochastic bubble population (SBP) model, the resistance factor of SC-CO2 foam was simulated by considering the foam generation rate and maximum bubble density. The microstructural characteristics of SC-CO2 foam were detected by optical microscopy. It was found that the effluent bubble size ranged between 20 and 30 μm and the coalescence rate of SC-CO2 foam became slow with the increasing NP concentration. Oscillation measurements revealed that the NPs enhanced surface elasticity between CO2 and foam agents for resisting external disturbances, thus resulting in enhanced film stability and excellent rheological properties.
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Affiliation(s)
- Weitao Li
- Department of Oilfield Chemicals, Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, China
| | - Falin Wei
- Department of Oilfield Chemicals, Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, China
| | - Chunming Xiong
- Department of Oilfield Chemicals, Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, China
| | - Jian Ouyang
- Department of Oilfield Chemicals, Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, China
| | - Liming Shao
- Department of Oilfield Chemicals, Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, China
| | - Mingli Dai
- Department of Oilfield Chemicals, Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, China
| | - Pingde Liu
- Department of Oilfield Chemicals, Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, China
| | - Dongxing Du
- College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, China
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14
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A novel acidizing technology in carbonate reservoir: In-Situ formation of CO2 foamed acid and its self-diversion. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123787] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Chen J, Azhar U, Wang Y, Liang J, Geng B. Preparation of fluoropolymer materials with different porous morphologies by an emulsion template method using supercritical carbon dioxide as a medium. RSC Adv 2019; 9:11331-11340. [PMID: 35520270 PMCID: PMC9063414 DOI: 10.1039/c9ra00777f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 04/03/2019] [Indexed: 12/14/2022] Open
Abstract
The choice of a suitable surfactant is key to the formation of a stable water-in-CO2 (W/C) or CO2-in-water (C/W) emulsion. It is even more critical in stabilization of the emulsion containing carbon dioxide (CO2). In this study, the successful preparation of W/C emulsion was achieved by using the amphiphilic block polymer poly(ethylene glycol) methyl ether-b-poly(trifluoroethyl methacrylate) (mPEG45-b-(TFEMA) n ) as a surfactant, in which CO2 was used as a solvent for the fluoromonomer, trifluoroethyl methacrylate (TFEMA). In the case of the W/C emulsion, CO2 and TFEMA were used as the continuous phase and water as the internal phase of the emulsion system. It has been found that in the length of the block polymer mPEG45-b-(TFEMA) n , the fluorine-containing chain end has a significant effect on the morphology of the polymer and the type of emulsion formed. The morphology of the polymer was observed by scanning electron microscopy which confirmed the type of emulsion formed. With the fluorine-containing end segment, the morphology of the polymer changes from a small hollow sphere in a large hollow sphere to a hollow spherical to a porous structure. Correspondingly, it could be concluded that the type of emulsion could go through the process from water-in-CO2-in-water-in-CO2 (W/C/W/C) emulsion to water-in-CO2-in-water (W/C/W) emulsion to water-in-CO2 (W/C) emulsion. Also, suitable co-surfactants were identified in this study. Investigations were also attempted to check the effect of the amount of surfactant, cross-linker and water/CO2 ratio on the type of emulsion formed as well as the morphology of the resultant polymer.
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Affiliation(s)
- Jian Chen
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials China
- School of Chemistry and Chemical Engineering, University of Jinan Jinan 250022 China
| | - Umair Azhar
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials China
- School of Chemistry and Chemical Engineering, University of Jinan Jinan 250022 China
| | - Yongkang Wang
- Institute of Fluorescent Probes for Biological Imaging, University of Jinan Shandong China
- School of Chemistry and Chemical Engineering, University of Jinan Jinan 250022 China
| | - Jihong Liang
- Institute of Fluorescent Probes for Biological Imaging, University of Jinan Shandong China
- School of Chemistry and Chemical Engineering, University of Jinan Jinan 250022 China
| | - Bing Geng
- Institute of Fluorescent Probes for Biological Imaging, University of Jinan Shandong China
- School of Chemistry and Chemical Engineering, University of Jinan Jinan 250022 China
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16
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Zhang L, Zhang X, Zhang P, Zhang Z, Liu S, Han B. Efficient emulsifying properties of glycerol-based surfactant. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.05.055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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17
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Wang L, Liu Y, Bao L, Hu D, Zong Y, Tong G, Zhao L, Liu T. Preparation of acrylamide-based poly-HIPEs with enhanced mechanical strength using PVDBM- b
-PEG-emulsified CO 2
-in-water emulsions. J Appl Polym Sci 2018. [DOI: 10.1002/app.46346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Liwen Wang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Yongjia Liu
- Instrumental Analysis Center; Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
| | - Lei Bao
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Dongdong Hu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Yuan Zong
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Gangsheng Tong
- Instrumental Analysis Center; Shanghai Jiao Tong University; Shanghai 200240 People's Republic of China
| | - Ling Zhao
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Tao Liu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
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18
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Wen L, Wang L, Fang S, Bao L, Hu D, Zong Y, Zhao L, Liu T. Stabilization of CO 2-in-water emulsions with high internal phase volume using PVAc- b-PVP and PVP- b-PVAc- b-PVP as emulsifying agents. J Appl Polym Sci 2018. [DOI: 10.1002/app.46351] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Li Wen
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Liwen Wang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Shuyi Fang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Lei Bao
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Dongdong Hu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Yuan Zong
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Ling Zhao
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Tao Liu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
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19
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Bao L, Fang S, Hu D, Zong Y, Zhao L, Yuan W, Liu T. Stabilization of CO2-in-water emulsions by nonfluorinated surfactants with enhanced CO2-philic tails. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2017.10.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Shi S, Wang Y, Bai S, Li Z, Ding M, Chen W. Pore-Scale Studies on the Stability of Microfoam and the Effect of Parameters on Its Bubble Size. J DISPER SCI TECHNOL 2016. [DOI: 10.1080/01932691.2015.1058168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Phase behavior and interfacial properties of a switchable ethoxylated amine surfactant at high temperature and effects on CO2-in-water foams. J Colloid Interface Sci 2016; 470:80-91. [DOI: 10.1016/j.jcis.2016.02.028] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 02/07/2016] [Accepted: 02/08/2016] [Indexed: 11/18/2022]
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22
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Zhang B, Zhang J, Liu C, Peng L, Sang X, Han B, Ma X, Luo T, Tan X, Yang G. High-internal-phase emulsions stabilized by metal-organic frameworks and derivation of ultralight metal-organic aerogels. Sci Rep 2016; 6:21401. [PMID: 26892258 PMCID: PMC4759572 DOI: 10.1038/srep21401] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 01/22/2016] [Indexed: 01/23/2023] Open
Abstract
To design high-internal-phase emulsion (HIPE) systems is of great interest from the viewpoints of both fundamental researches and practical applications. Here we demonstrate for the first time the utilization of metal-organic framework (MOF) for HIPE formation. By stirring the mixture of water, oil and MOF at room temperature, the HIPE stabilized by the assembly of MOF nanocrystals at oil-water interface could be formed. The MOF-stabilized HIPE provides a novel route to produce highly porous metal-organic aerogel (MOA) monolith. After removing the liquids from the MOF-stabilized HIPE, the ultralight MOA with density as low as 0.01 g·cm(-3) was obtained. The HIPE approach for MOA formation has unique advantages and is versatile in producing different kinds of ultralight MOAs with tunable porosities and structures.
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Affiliation(s)
- Bingxing Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China
| | - Jianling Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China
| | - Chengcheng Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China
| | - Li Peng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China
| | - Xinxin Sang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China
| | - Xue Ma
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China
| | - Tian Luo
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China
| | - Xiuniang Tan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China
| | - Guanying Yang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China
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23
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Xue Z, Worthen AJ, Da C, Qajar A, Ketchum IR, Alzobaidi S, Huh C, Prodanović M, Johnston KP. Ultradry Carbon Dioxide-in-Water Foams with Viscoelastic Aqueous Phases. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:28-37. [PMID: 26666311 DOI: 10.1021/acs.langmuir.5b03036] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
For foams with ultra low water contents, the capillary pressure is very large and induces rapid drainage that destabilizes the aqueous lamellae between the gas bubbles. However, we show that high-pressure CO2-in-water foams can be stabilized with a viscoelastic aqueous phase composed of entangled wormlike micelles, even for extremely high CO2 volume fractions ϕ of 0.95 to 0.98; the viscosity of these ultradry foams increased by up to 3-4-fold, reaching more than 100 cP relative to foams formed with conventional low viscosity aqueous phases. The foam morphology consisted of fine ∼20 μm polyhedral-shaped CO2 bubbles that were stable for hours. The wormlike micelles were formed by mixing anionic sodium lauryl ether sulfate (SLES) with salt and a protonated cationic surfactant, as shown by cryogenic transmission electron microscopy (cryo-TEM) and large values of the zero-shear viscosity and the dynamic storage and loss moduli. With the highly viscous continuous aqueous phases, the foam lamella drainage rates were low, as corroborated by confocal microscopy. The preservation of viscous thick lamellae resulted in lower rates of Ostwald ripening relative to conventional foams as shown by high-pressure optical microscopy. The ability to stabilize viscous ultra high internal phase foams is expected to find utility in various practical applications, including nearly "waterless" fracturing fluids for recovery of oil and gas in shale, offering the possibility of a massive reduction in the amount of wastewater.
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Affiliation(s)
- Zheng Xue
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Andrew J Worthen
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Chang Da
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Ali Qajar
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Isaiah Robert Ketchum
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Shehab Alzobaidi
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Chun Huh
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Maša Prodanović
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
| | - Keith P Johnston
- Department of Chemical Engineering and ‡Department of Petroleum and Geosystems Engineering, University of Texas at Austin , Austin, Texas 78712, United States
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24
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Viscosity and stability of ultra-high internal phase CO2-in-water foams stabilized with surfactants and nanoparticles with or without polyelectrolytes. J Colloid Interface Sci 2016; 461:383-395. [DOI: 10.1016/j.jcis.2015.08.031] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 08/14/2015] [Accepted: 08/18/2015] [Indexed: 11/17/2022]
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25
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Economical and Efficient Hybrid Surfactant with Low Fluorine Content for the Stabilisation of Water-in-CO2 Microemulsions. J Supercrit Fluids 2015. [DOI: 10.1016/j.supflu.2015.01.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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26
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Chen Y, Elhag AS, Cui L, Worthen AJ, Reddy PP, Noguera JA, Ou AM, Ma K, Puerto M, Hirasaki GJ, Nguyen QP, Biswal SL, Johnston KP. CO2-in-Water Foam at Elevated Temperature and Salinity Stabilized with a Nonionic Surfactant with a High Degree of Ethoxylation. Ind Eng Chem Res 2015. [DOI: 10.1021/ie503674m] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yunshen Chen
- McKetta
Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712-1589, United States
| | - Amro S. Elhag
- McKetta
Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712-1589, United States
| | - Leyu Cui
- Department
of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Andrew J. Worthen
- McKetta
Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712-1589, United States
| | - Prathima P. Reddy
- McKetta
Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712-1589, United States
| | - Jose A. Noguera
- McKetta
Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712-1589, United States
| | - Anne Marie Ou
- McKetta
Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712-1589, United States
| | - Kun Ma
- Department
of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Maura Puerto
- Department
of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - George J. Hirasaki
- Department
of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Quoc P. Nguyen
- Department
of Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas 78712-1585, United States
| | - Sibani L. Biswal
- Department
of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Keith P. Johnston
- McKetta
Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712-1589, United States
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27
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Roques-Carmes T, Monnier H, Portha JF, Marchal P, Falk L. Influence of the plate-type continuous micro-separator dimensions on the efficiency of demulsification of oil-in-water emulsion. Chem Eng Res Des 2014. [DOI: 10.1016/j.cherd.2014.02.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Zhang J, Peng L, Han B. Amphiphile self-assemblies in supercritical CO2 and ionic liquids. SOFT MATTER 2014; 10:5861-5868. [PMID: 25000970 DOI: 10.1039/c4sm00890a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Supercritical (sc) CO2 and ionic liquids (ILs) are very attractive green solvents with tunable properties. Using scCO2 and ILs as alternatives of conventional solvents (water and oil) for forming amphiphile self-assemblies has many advantages. For example, the properties and structures of the amphiphile self-assemblies in these solvents can be easily modulated by tuning the properties of solvents; scCO2 has excellent solvation power and mass-transfer characteristics; ILs can dissolve both organic and inorganic substances and their properties are designable to satisfy the requirements of various applications. Therefore, the amphiphile self-assemblies in scCO2 and ILs have attracted considerable attention in recent years. This review describes the advances of using scCO2 or/and ILs as amphiphile self-assembly media in the last decade. The amphiphile self-assemblies in scCO2 and ILs are first reviewed, followed by the discussion on combination of scCO2 and ILs in creating microemulsions or emulsions. Some future directions on the amphiphile self-assemblies in scCO2 and ILs are highlighted.
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Affiliation(s)
- Jianling Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, China.
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29
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Yuan Q, Wang XH, Dandekar A, Sun CY, Li QP, Ma ZW, Liu B, Chen GJ. Replacement of Methane from Hydrates in Porous Sediments with CO2-in-Water Emulsions. Ind Eng Chem Res 2014. [DOI: 10.1021/ie501009y] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qing Yuan
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China
- Engineering
Technology Research Institute, CNPC Bohai Drilling Engineering Co., Ltd., Tianjin Tanggu 300457, China
| | - Xiao-Hui Wang
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China
| | - Abhijit Dandekar
- Department
of Petroleum Engineering, University of Alaska Fairbanks, Fairbanks, Alaska, United States
| | - Chang-Yu Sun
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China
| | | | - Zheng-Wei Ma
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China
| | - Bei Liu
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China
| | - Guang-Jin Chen
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China
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30
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Carbon Dioxide-in-Water Foams Stabilized with a Mixture of Nanoparticles and Surfactant for CO2 Storage and Utilization Applications. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.egypro.2014.11.827] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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Nanoparticle-stabilized carbon dioxide-in-water foams with fine texture. J Colloid Interface Sci 2013; 391:142-51. [DOI: 10.1016/j.jcis.2012.09.043] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Revised: 09/17/2012] [Accepted: 09/19/2012] [Indexed: 11/20/2022]
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32
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Peng L, Zhang J, Li J, Han B, Xue Z, Yang G. Macro- and Mesoporous Polymers Synthesized by a CO2-in-Ionic Liquid Emulsion-Templating Route. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209255] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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33
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Peng L, Zhang J, Li J, Han B, Xue Z, Yang G. Macro- and Mesoporous Polymers Synthesized by a CO2-in-Ionic Liquid Emulsion-Templating Route. Angew Chem Int Ed Engl 2013; 52:1792-5. [DOI: 10.1002/anie.201209255] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Indexed: 01/03/2023]
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34
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A Review on Research on Replacement of CH4 in Natural Gas Hydrates by Use of CO2. ENERGIES 2012. [DOI: 10.3390/en5020399] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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35
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Li J, Zhang J, Zhao Y, Han B, Yang G. High-internal-ionic liquid-phase emulsions. Chem Commun (Camb) 2012; 48:994-6. [DOI: 10.1039/c2cc15922h] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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36
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Abstract
A semi-fluorinated hybrid amphiphile, pentadecafluoro-5-dodecyl (F7H4) sulfate, has been shown to form reversed micelles in dense CO(2); the aggregates evolve to form water-in-CO(2) (w/c) microemulsion droplets on addition of water. Aggregation structures in these w/c phases have been characterised by small-angle neutron scattering (SANS), showing the presence of cylindrical droplets, which change into dispersed lamellar phases at even higher water loadings. Other systems are also introduced, being high internal phase emulsions (HIPEs) with brine, and liquid and supercritical CO(2), stabilized by certain commercially available nonylphenol ethoxylates (Dow Tergitol NP-, and Huntsman Surfonic N- amphiphiles). These dispersions have been characterised by SANS for the first time. Quantitative analyses of the HIPEs SANS profiles show that they behave similarly to hydrocarbon-water emulsion analogues, with regard to total interfacial areas and the effects of amphiphile concentration on the underlying structures. Finally, the advantages and disadvantages of both approaches for controlling the physico-chemical properties of liquid/supercritical CO(2) in potential applications are compared and contrasted. These results highlight the importance of using specially designed CO(2)-philic amphiphiles for generating self-assembly structures in dense CO(2).
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37
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Chang TFM, Tasaki T, Ishiyama C, Sone M. Defect-Free Nickel Micropillars Fabricated at a High Current Density by Application of a Supercritical Carbon Dioxide Emulsion. Ind Eng Chem Res 2011. [DOI: 10.1021/ie200469e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tso-Fu Mark Chang
- Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Toshikazu Tasaki
- Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Chiemi Ishiyama
- Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Masato Sone
- Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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38
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CO2/water/surfactant ternary systems and liposome formation using supercritical CO2: A review. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2011.01.027] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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39
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Chen X, Adkins SS, Nguyen QP, Sanders AW, Johnston KP. Interfacial tension and the behavior of microemulsions and macroemulsions of water and carbon dioxide with a branched hydrocarbon nonionic surfactant. J Supercrit Fluids 2010. [DOI: 10.1016/j.supflu.2010.08.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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40
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Mohamed A, Trickett K, Chin SY, Cummings S, Sagisaka M, Hudson L, Nave S, Dyer R, Rogers SE, Heenan RK, Eastoe J. Universal surfactant for water, oils, and CO2. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:13861-13866. [PMID: 20687576 DOI: 10.1021/la102303q] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A trichain anionic surfactant sodium 1,4-bis(neopentyloxy)-3-(neopentyloxycarbonyl)-1,4-dioxobutane-2-sulfonate (TC14) is shown to aggregate in three different types of solvent: water, heptane, and liquid CO(2). Small-angle neutron scattering (SANS) has been used to characterize the surfactant aggregates in water, heptane, and dense CO(2). Surface tension measurements, and analyses, show that the addition of a third branched chain to the surfactant structural template is critical for sufficiently lowering the surface energy, tipping the balance between a CO(2)-incompatible surfactant (AOT) and CO(2)-philic compounds that will aggregate to form micelles in dense CO(2) (TC14). These results highlight TC14 as one of the most adaptable and useful surfactants discovered to date, being compatible with a wide range of solvent types from high dielectric polar solvent water to alkanes with low dielectrics and even being active in the uncooperative and challenging solvent environment of liquid CO(2).
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Affiliation(s)
- Azmi Mohamed
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
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41
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Torino E, Reverchon E, Johnston KP. Carbon dioxide/water, water/carbon dioxide emulsions and double emulsions stabilized with a nonionic biocompatible surfactant. J Colloid Interface Sci 2010; 348:469-78. [DOI: 10.1016/j.jcis.2010.04.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2010] [Revised: 04/08/2010] [Accepted: 04/10/2010] [Indexed: 10/19/2022]
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42
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Adkins SS, Chen X, Nguyen QP, Sanders AW, Johnston KP. Effect of branching on the interfacial properties of nonionic hydrocarbon surfactants at the air–water and carbon dioxide–water interfaces. J Colloid Interface Sci 2010; 346:455-63. [DOI: 10.1016/j.jcis.2009.12.059] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2009] [Revised: 12/23/2009] [Accepted: 12/29/2009] [Indexed: 11/30/2022]
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43
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Adkins SS, Chen X, Chan I, Torino E, Nguyen QP, Sanders AW, Johnston KP. Morphology and stability of CO2-in-water foams with nonionic hydrocarbon surfactants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:5335-5348. [PMID: 20345107 DOI: 10.1021/la903663v] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The morphologies, stabilities, and viscosities of high-pressure carbon dioxide-in-water (C/W) foams (emulsions) formed with branched nonionic hydrocarbon surfactants were investigated by in situ optical microscopy and capillary rheology. Over two dozen hydrocarbon surfactants were shown to stabilize C/W foams with Sauter mean bubble diameters as low as 1 to 2 microm. Coalescence of the C/W foam bubbles was rare for bubbles larger than about 0.5 microm over a 60 h time frame, and Ostwald ripening became very slow. By better blocking of the CO(2) and water phases with branched and double-tailed surfactants, the interfacial tension decreases, the surface pressure increases, and the C/W foams become very stable. For branched surfactants with propylene oxide middle groups, the stabilities were markedly lower for air/water foams and decane-water emulsions. The greater stability of the C/W foams to coalescence may be attributed to a smaller capillary pressure, lower drainage rates, and a sufficient surface pressure and thus limiting surface elasticity, plus small film sizes, to hinder spatial and surface density fluctuations that lead to coalescence. Unexpectedly, the foams were stable even when the surfactant favored the CO(2) phase over the water phase, in violation of Bancroft's rule. This unusual behavior is influenced by the low drainage rate, which makes Marangoni stabilization of less consequence and the strong tendency of emerging holes in the lamella to close as a result of surfactant tail flocculation in CO(2). The high distribution coefficient toward CO(2) versus water is of significant practical interest for mobility control in CO(2) sequestration and enhanced oil recovery by foam formation.
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Affiliation(s)
- Stephanie S Adkins
- Department of Chemical Engineering, University of Texas, Austin, Texas 78712, USA
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44
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Johnston KP, Rocha SRD. Colloids in supercritical fluids over the last 20 years and future directions. J Supercrit Fluids 2009. [DOI: 10.1016/j.supflu.2008.10.024] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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45
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Adkins SS, Gohil D, Dickson JL, Webber SE, Johnston KP. Water-in-carbon dioxide emulsions stabilized with hydrophobic silica particles. Phys Chem Chem Phys 2007; 9:6333-43. [DOI: 10.1039/b711195a] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Keagy JA, Zhang X, Johnston KP, Busch E, Weber F, Wolf PJ, Rhoad T. Cleaning of patterned porous low-k dielectrics with water, carbon dioxide and ambidextrous surfactants. J Supercrit Fluids 2006. [DOI: 10.1016/j.supflu.2006.04.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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