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Liu N, Wan B, Zhang Z, Fang X, Lin X, Wang Y, Tang J, Bai X, Li Y, Yao Y, Zhou G. Self-healing waterborne polyurethane coatings with high transparence and haze via cellulose nanocrystal stabilized linseed oil Pickering emulsion. Int J Biol Macromol 2023; 235:123830. [PMID: 36842743 DOI: 10.1016/j.ijbiomac.2023.123830] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/12/2023] [Accepted: 02/21/2023] [Indexed: 02/28/2023]
Abstract
Protection coatings with self-healing ability can significantly enhance their anti-corrosion properties and service life. In this study, self-healing waterborne polyurethane (WPU) coatings with high transparence and haze were facile fabricated via cellulose nanocrystal (CNC) stabilized linseed oil (LO) Pickering emulsion. Sustainable CNCs displayed outstanding emulsifying ability and stability to stabilize LO Pickering emulsion. The size of LO Pickering emulsion droplets decreases with the CNC concentration, while the emulsion fraction and surface coverage by CNCs increase with CNC concentration, leading to a more stable Pickering emulsion. The self-healing rates of WPU coatings at varied time, temperature, CNC and catalyst concentration were investigated. Higher temperature, larger emulsion droplets, and with driers employed as catalysts generally lead to faster self-healing rate. The WPU self-healing coatings displayed much better abrasion resistance and mechanical properties than pristine WPU due to the incorporation of CNCs. Moreover, the WPU self-healing coatings show a high transparence and haze due to light scattering, and their applications as coatings of lamp covers and glass to achieve uniform light distribution and privacy protection with high light transmission were further demonstrated.
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Affiliation(s)
- Nana Liu
- SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Bolin Wan
- SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Zhen Zhang
- SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.
| | - Xiong Fang
- SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Xiaoming Lin
- SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | | | - Juntao Tang
- Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Xiaoxia Bai
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710126, China.
| | - Yingzhan Li
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yao Yao
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China.
| | - Guofu Zhou
- SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
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2
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Liu S, Zhang H, Yuan S. Hydrophilic Silica Nanoparticles in O/W Emulsion: Insights from Molecular Dynamics Simulation. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238407. [PMID: 36500501 PMCID: PMC9740303 DOI: 10.3390/molecules27238407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/27/2022] [Accepted: 11/29/2022] [Indexed: 12/05/2022]
Abstract
Previous studies have been carried out on the effect of silica nanoparticles (SNPs) on the stability of oil-water emulsions. However, the combining configuration of SNPs and oil droplets at the molecular level and the effect of SNP content on the coalescence behavior of oil droplets cannot be obtained through experiments. In this paper, molecular dynamics (MD) simulation was performed to investigate the adsorption configuration of hydrophilic SNPs in an O/W emulsion system, and the effect of adsorption of SNPs on coalescence of oil droplets. The simulation results showed: (i) SNPs adsorbed on the surface of oil droplets, and excessive SNPs self-aggregated and connected by hydrogen bonds. (ii) Partially hydrophilic asphaltene and resin molecules formed adsorption configurations with SNPs, which changed the distribution of oil droplet components. Furthermore, compared with hydrophobic asphaltene, the hydrophilic asphaltene was easier to combine with SNPs. (iii) SNPs would extend the oil droplet coalescence time, and the π-π stacking structures were formed between asphaltene and asphaltene or resin molecules to enhance the connection between oil droplets during the oil droplet contact process. (iv) Enough SNPs tightly wrapped around the oil droplet, similar to the formation of a rigid film on the surface of an oil droplet, which hindered the contact and coalescence of components between oil droplets.
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Affiliation(s)
- Shasha Liu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
- School of Chemistry and Chemical Engineering, Qilu Normal University, Jinan 250100, China
| | - Hengming Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Shiling Yuan
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
- Correspondence:
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Ma J, Yao M, Yang Y, Zhang X. Comprehensive review on stability and demulsification of unconventional heavy oil-water emulsions. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118510] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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4
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Stabilization of amylopectin-pullulan water in water emulsions by Interacting protein particles. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2021.107320] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Dhandhi Y, Chaudhari RK, Naiya TK. Development in separation of oilfield emulsion toward green technology – A comprehensive review. SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.1995427] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yogesh Dhandhi
- Department of Petroleum Engineering, Indian Institute of Technology (ISM), Dhanbad, India
| | - Ronak Kumar Chaudhari
- Department of Petroleum Engineering, Indian Institute of Technology (ISM), Dhanbad, India
| | - Tarun Kumar Naiya
- Department of Petroleum Engineering, Indian Institute of Technology (ISM), Dhanbad, India
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6
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Li G, Lee WJ, Tan CP, Lai OM, Wang Y, Qiu C. Tailored rigidity of W/O Pickering emulsions using diacylglycerol-based surface-active solid lipid nanoparticles. Food Funct 2021; 12:11732-11746. [PMID: 34698749 DOI: 10.1039/d1fo01883c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Pickering water-in-oil (W/O) emulsions were fabricated by using medium-long chain diacylglycerol (MLCD)-based solid lipid nanoparticles (SLNs) and the connection between the characteristics of the SLNs and the colloidal stability of the emulsions was established. Via melt-emulsification and ultrasonication, MLCD-based SLNs with particle sizes of 120-300 nm were obtained with or without other surfactants. The particle size of the SLNs was influenced by the chemical properties of the surfactants, and surfactants decreased the contact angle of SLNs at the oil-water interface. Gelation was observed in SLNs modified by sodium stearoyl lactylate and lecithin, whereas the addition of Tween 20 resulted in a homogeneous SLN solution. The adsorption of surfactants onto SLN surfaces caused the production of higher amounts of α crystals accompanied by delayed crystallization onset which contributed to the reduction of particle size, interfacial tension and oil wetting ability. The W/O emulsions with higher rigidity and physical stability can be obtained by varying surfactant types and by increasing SLN mass ratios to 60%, whereby more SLNs are adsorbed at the droplet surface as a Pickering stabilizer. This study provides useful insights for the development of diacylglycerol-based SLNs and Pickering W/O emulsions which have great potential for food, cosmetic and pharmaceutical applications.
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Affiliation(s)
- Guoyan Li
- JNU-UPM International Joint Laboratory on Plant Oil Processing and Safety, Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China. .,Guangdong International Joint Research Center for Oilseed Biorefinery, Nutrition and Safety, Guangzhou 510632, China
| | - Wan Jun Lee
- JNU-UPM International Joint Laboratory on Plant Oil Processing and Safety, Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China. .,Guangdong International Joint Research Center for Oilseed Biorefinery, Nutrition and Safety, Guangzhou 510632, China
| | - Chin Ping Tan
- Department of Food Technology, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43300 Selangor, Malaysia
| | - Oi Ming Lai
- Department of Bioprocess Technology, Faculty of Biotechnology & Biomolecular Sciences, Universiti Putra Malaysia, 43300 Selangor, Malaysia
| | - Yong Wang
- JNU-UPM International Joint Laboratory on Plant Oil Processing and Safety, Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China. .,Guangdong International Joint Research Center for Oilseed Biorefinery, Nutrition and Safety, Guangzhou 510632, China
| | - Chaoying Qiu
- JNU-UPM International Joint Laboratory on Plant Oil Processing and Safety, Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China. .,Guangdong International Joint Research Center for Oilseed Biorefinery, Nutrition and Safety, Guangzhou 510632, China
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7
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Lv L, Wang H, Chen J, Cao Y, Wang H, Ren B, Zhang S. Fabrication of Ionic Liquid-Based Pickering Emulsion and Its Enhancement for Tri-isobutene Formation in Isobutene Oligomerization. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lunchao Lv
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Hongyan Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Jian Chen
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yingying Cao
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hui Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Baozeng Ren
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Suojiang Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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8
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Emulsions Stabilized by Inorganic Nanoclays and Surfactants: Stability, Viscosity, and Implications for Applications. Inorganica Chim Acta 2020; 508. [PMID: 32377022 DOI: 10.1016/j.ica.2020.119566] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Pickering emulsions, or emulsions with solid particles at the interface, have attracted significant interest in Enhanced Oil Recovery (EOR) processes, cosmetics, and drug delivery systems due to their ability to resist coalescence. Here, a synthetic clay nanoparticle, laponite®, is utilized to create oil-in-water (o/w) emulsions, and the addition of small-molecule surfactants induces a more stable emulsion. In this study, the stability of laponite® Pickering emulsions with and without the surfactants (dodecyltrimethylammonium bromide (DTAB), Pluronic F68 (F68), and sodium dodecyl sulfate (SDS) is investigated using dynamic light scattering (DLS), ζ-potential, optical microscopy, and rheology. With laponite® and no added surfactants, the DLS and ζ-potential results show formation of emulsion droplets with a diameter of 3 μm and a ζ-potential of -90 mV. With the addition of surfactants, both the droplet diameter and ζ-potential increase, suggesting adsorption of surfactants on the surface of laponite® particle. Optical microscopy suggests that the Pickering emulsion without surfactant undergoes flocculation, while the emulsion becomes stable to coalescence and creaming with addition of surfactants due to formation of a network structure. Regardless of the formation of network structure, the laponite®-F68 emulsion rheologically behaves as a Newtonian fluid, while the laponite®-SDS and laponite®-DTAB emulsions display shear thinning behavior. The difference in the rheological behavior can be attributed to the weak adsorption of F68 on laponite® and electrostatic interactions between laponite® and charged surfactants at oil-water interface.
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9
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Overview on petroleum emulsions, formation, influence and demulsification treatment techniques. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.11.014] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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10
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Boggione Santos IJ, Hernandez Hernandez HL, Cardoso Costa MH, de Queiroz Lafetá JA, dos Reis Coimbra JS. Conjugates of α-lactalbumin, β-lactoglobulin, and lysozyme with polysaccharides: Characterization and techno-functional properties. Food Res Int 2019; 116:492-498. [DOI: 10.1016/j.foodres.2018.08.065] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 08/09/2018] [Accepted: 08/18/2018] [Indexed: 10/28/2022]
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11
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Zhao G, Li Y, Hong B, Han X, Zhao S, Pera-Titus M, Liu H. Nanomixing Effects in Glycerol/Dodecanol Pickering Emulsions for Interfacial Catalysis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:15587-15592. [PMID: 30472857 DOI: 10.1021/acs.langmuir.8b02892] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Pickering emulsions offer a promising platform for conducting interfacial reactions between immiscible reagents. Despite the significant progress in the engineering of amphiphilic catalysts for such reactions, the mechanism behind their enhanced activity is still poorly understood. Herein, using the glycerol/dodecanol system as a case study, we conducted a combined meso- and microscale study of Pickering emulsions stabilized by amphiphilic silica nanoparticles bearing acid centers by marrying dissipative particle dynamics simulations with emulsification experiments. The optimal surface properties of the silica particles in terms of length and density of alkyl chains were identified, matching the experimental results. The local distribution of glycerol and dodecanol near the acid centers was ascertained, unraveling potential reactivity zones near the catalytic acid centers due to an enhanced nanomixing between glycerol and dodecanol.
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Affiliation(s)
- Guolin Zhao
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay , 201108 Shanghai , China
| | - Yao Li
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay , 201108 Shanghai , China
| | - Bing Hong
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay , 201108 Shanghai , China
| | | | | | - Marc Pera-Titus
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay , 201108 Shanghai , China
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12
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Geramian M, Liu Q, Ivey DG, Etsell TH. Influence of Oil Sands Composition on Bitumen Quality During Non‐Aqueous Bitumen Extraction from the Athabasca Deposit. CAN J CHEM ENG 2018. [DOI: 10.1002/cjce.23340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mirjavad Geramian
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAB, Canada, T6G 1H9
| | - Qi Liu
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAB, Canada, T6G 1H9
| | - Douglas G. Ivey
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAB, Canada, T6G 1H9
| | - Thomas H. Etsell
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAB, Canada, T6G 1H9
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13
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Sy PM, Anton N, Idoux-Gillet Y, Dieng SM, Messaddeq N, Ennahar S, Diarra M, Vandamme TF. Pickering nano-emulsion as a nanocarrier for pH-triggered drug release. Int J Pharm 2018; 549:299-305. [PMID: 30075249 DOI: 10.1016/j.ijpharm.2018.07.066] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 07/29/2018] [Accepted: 07/30/2018] [Indexed: 10/28/2022]
Abstract
This study investigates the formulation of surfactant-free Pickering nano-emulsions able to release a drug at specific pH, in order to enhance its oral bioavailability. The stabilizing nanoparticles composed of magnesium hydroxide, were obtained by nano-precipitation method. The oil-in-water Pickering nano-emulsions stabilized with Mg(OH)2 nanoparticles, and encapsulating a model of hydrophobic drug (ibuprofen) were formulated following a high-energy process, using a sonication probe. The experimental approach explored the impact of all formulation parameters, composition and size of Mg(OH)2 nanoparticles, on the physico-chemical properties of the Pickering nano-emulsions. The system was characterized by DLS and transmission electron microscopy. In addition, Mg(OH)2 has the advantage of being solubilized in an acid medium leading to the destabilization of the nano-emulsion and the release of the active ingredient orally. The acid release study (pH = 1.2) showed cumulative release as a function of initial nanodroplet loading and saturation concentration. In basic media (pH = 6.8), we found a significant release of ibuprofen from the nano-emulsions that already had saturation in an acid medium. These nano-emulsions can not only protect patients from the side effects of acid medicines through the basic properties of hydroxides but also can contribute to the increase of the bioavailability of these drugs. In addition, once in the stomach pH is increased by hydroxides and promotes the release of active ingredients such as ibuprofen whose solubility is strongly influenced by pH.
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Affiliation(s)
- Papa Mady Sy
- Université de Strasbourg, Faculté de pharmacie, Laboratoire de Conception et d'Application de molécules Bioactives, Equipe de pharmacie biogalénique, 74 route du Rhin, B.P. 60024, 67401 Illkirch cedex, France; Université Cheikh Anta DIOP de Dakar, Laboratoire de physique et de Biophysique pharmaceutique, Faculté de Médecine, de Pharmacie et d'Odontologie, BP: 5005, Dakar Fann, Senegal
| | - Nicolas Anton
- Université de Strasbourg, Faculté de pharmacie, Laboratoire de Conception et d'Application de molécules Bioactives, Equipe de pharmacie biogalénique, 74 route du Rhin, B.P. 60024, 67401 Illkirch cedex, France
| | - Ysia Idoux-Gillet
- Université de Strasbourg, UMR 1260, INSERM/Faculté de médecine, Bâtiment 3, 11 Rue Humann, 67085 Strasbourg, France
| | - Sidy M Dieng
- Université de Strasbourg, Faculté de pharmacie, Laboratoire de Conception et d'Application de molécules Bioactives, Equipe de pharmacie biogalénique, 74 route du Rhin, B.P. 60024, 67401 Illkirch cedex, France; Université Cheikh Anta DIOP de Dakar, Laboratoire de physique et de Biophysique pharmaceutique, Faculté de Médecine, de Pharmacie et d'Odontologie, BP: 5005, Dakar Fann, Senegal
| | - Nadia Messaddeq
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, 1 rue Laurent Fries, B.P. 10142, 67404 Illkirch Cedex, France
| | - Said Ennahar
- Université de Strasbourg, Equipe de Chimie Analytique des Molécules Bio-Actives, UMR 7178, IPHC-DSA, CNRS, Illkirch-Graffenstaden 67400, France
| | - Mounibé Diarra
- Université Cheikh Anta DIOP de Dakar, Laboratoire de physique et de Biophysique pharmaceutique, Faculté de Médecine, de Pharmacie et d'Odontologie, BP: 5005, Dakar Fann, Senegal
| | - Thierry F Vandamme
- Université de Strasbourg, Faculté de pharmacie, Laboratoire de Conception et d'Application de molécules Bioactives, Equipe de pharmacie biogalénique, 74 route du Rhin, B.P. 60024, 67401 Illkirch cedex, France.
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14
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Demulsification to control solute release from Pickering crystal-stabilized water-in-oil emulsions. J Colloid Interface Sci 2018; 509:360-368. [DOI: 10.1016/j.jcis.2017.08.091] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 08/26/2017] [Accepted: 08/28/2017] [Indexed: 01/23/2023]
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15
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Effect of stearic acid modified HAp nanoparticles in different solvents on the properties of Pickering emulsions and HAp/PLLA composites. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [DOI: 10.1016/j.msec.2017.05.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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17
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Bai RX, Xue LH, Dou RK, Meng SX, Xie CY, Zhang Q, Guo T, Meng T. Light-Triggered Release from Pickering Emulsions Stabilized by TiO2 Nanoparticles with Tailored Wettability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:9254-64. [PMID: 27505101 DOI: 10.1021/acs.langmuir.6b02329] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
In this work, a new strategy for developing light-triggered Pickering emulsions as smart soft vehicles for on-demand release is proposed. Initially, UV-induced tailored wettability allows anchoring of TiO2 nanoparticles at the interface to prepare stable water in oil emulsions. Such emulsions show the efficacy of microencapsulation and controlled release by demulsification due to the hydrophilic conversion of the TiO2 nanoparticles using a noninvasive light irradiation trigger. A molecule of interest is selected as a model cargo to quantitatively evaluate the as-prepared Pickering emulsions for their encapsulation and release behaviors. Moreover, light-responsive emulsion destabilization mechanism is studied as a function of particle concentration, light wavelength, and light intensity, respectively, determined by drop diameter evolution and droplet coalescence kinetics plots. For consideration of application in life sciences, Pickering emulsions sensitive to visible light are also established based on nitrogen doping of TiO2 nanoparticle emulsifiers.
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Affiliation(s)
- Rui-Xue Bai
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, People's Republic of China
| | - Long-Hui Xue
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, People's Republic of China
| | - Rong-Kun Dou
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, People's Republic of China
| | - Shi-Xin Meng
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, People's Republic of China
| | - Chun-Yan Xie
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, People's Republic of China
| | - Qing Zhang
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, People's Republic of China
| | - Ting Guo
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, People's Republic of China
| | - Tao Meng
- School of Life Sciences and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, People's Republic of China
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18
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Chapelain JCM, Faure S, Beneventi D. Clay Flotation: Effect of TTAB Cationic Surfactant on Foaming and Stability of Illite Clay Microaggregates Foams. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b04450] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Julie C. M. Chapelain
- CEA, DEN, DTCD,
Marcoule, BP 17171, F-30207 Bagnols-sur-Cèze, France
- Univ. Grenoble
Alpes, LGP2, F-38000 Grenoble, France
| | - Sylvain Faure
- CEA, DEN, DTCD,
Marcoule, BP 17171, F-30207 Bagnols-sur-Cèze, France
| | - Davide Beneventi
- Univ. Grenoble
Alpes, LGP2, F-38000 Grenoble, France
- CNRS, LGP2, F-38000 Grenoble, France
- Agefpi,
LGP2, F-38000 Grenoble, France
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Faria J, Pilar Ruiz M, Resasco DE. Carbon Nanotube/Zeolite Hybrid Catalysts for Glucose Conversion in Water/Oil Emulsions. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00559] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jimmy Faria
- Abengoa Research, Campus Palmas
Altas c/Energía Solar n° 1, Palmas Altas, Seville 41014, Spain
| | - M. Pilar Ruiz
- Abengoa Research, Campus Palmas
Altas c/Energía Solar n° 1, Palmas Altas, Seville 41014, Spain
| | - Daniel E. Resasco
- School
of Chemical, Biological and Materials Engineering and Center of Interfacial
Reaction Engineering (CIRE), University of Oklahoma, Norman, Oklahoma 73019, United States
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Hajivand P, Vaziri A. OPTIMIZATION OF DEMULSIFIER FORMULATION FOR SEPARATION OF WATER FROM CRUDE OIL EMULSIONS. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2015. [DOI: 10.1590/0104-6632.20150321s00002755] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Molecularly imprinted polymer microspheres prepared by Pickering emulsion polymerization for selective solid-phase extraction of eight bisphenols from human urine samples. Anal Chim Acta 2015; 872:35-45. [PMID: 25892067 DOI: 10.1016/j.aca.2015.02.058] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 02/16/2015] [Accepted: 02/21/2015] [Indexed: 12/29/2022]
Abstract
The bisphenol A (BPA) imprinted polymer microspheres were prepared by simple Pickering emulsion polymerization. Compared to traditional bulk polymerization, both high yields of polymer and good control of particle sizes were achieved. The characterization results of scanning electron microscopy and nitrogen adsorption-desorption measurements showed that the obtained molecularly imprinted polymer microsphere (MIPMS) particles possessed regular spherical shape, narrow diameter distribution (30-60 μm), a specific surface area (S(BET)) of 281.26 m(2) g(-1) and a total pore volume (V(t)) of 0.459 cm(3) g(-1). Good specific adsorption capacity for BPA was obtained in the sorption experiment and good class selectivity for BPA and its seven structural analogs (bisphenol F, bisphenol B, bisphenol E, bisphenol AF, bisphenol S, bisphenol AP and bisphenol Z) was demonstrated by the chromatographic evaluation experiment. The MIPMS as solid-phase extraction (SPE) packing material was then evaluated for extraction and clean-up of these bisphenols (BPs) from human urine samples. An accurate and sensitive analytical method based on the MIPMS-SPE coupled with HPLC-DAD has been successfully established for simultaneous determination of eight BPs from human urine samples with detection limits of 1.2-2.2 ng mL(-1). The recoveries of BPs for urine samples at two spiking levels (100 and 500 ng mL(-1) for each BP) were in the range of 81.3-106.7% with RSD values below 8.3%.
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22
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He L, Lin F, Li X, Sui H, Xu Z. Interfacial sciences in unconventional petroleum production: from fundamentals to applications. Chem Soc Rev 2015; 44:5446-94. [DOI: 10.1039/c5cs00102a] [Citation(s) in RCA: 203] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
With the ever increasing demand for energy to meet the needs of growth in population and improvement in the living standards, in particular in developing countries, the abundant unconventional oil reserves (about 70% of total world oil), such as heavy oil, oil/tar sands and shale oil, are playing an increasingly important role in securing global energy supply.
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Affiliation(s)
- Lin He
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Feng Lin
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - Xingang Li
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- P. R. China
- National Engineering Research Centre of Distillation Technology
| | - Hong Sui
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- P. R. China
- National Engineering Research Centre of Distillation Technology
| | - Zhenghe Xu
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
- Institute of Nuclear and New Energy Technology
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Ji J, Shu S, Wang F, Liu J, Yu ZZ. Revisit to the self-assembled hybrid acrylate/silica core-shell structured particles in the presence of unmodified silica particles. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.01.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chevalier Y, Bolzinger MA. Emulsions stabilized with solid nanoparticles: Pickering emulsions. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.02.054] [Citation(s) in RCA: 849] [Impact Index Per Article: 77.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Fan Z, Tay A, Pera-Titus M, Zhou WJ, Benhabbari S, Feng X, Malcouronne G, Bonneviot L, De Campo F, Wang L, Clacens JM. Pickering Interfacial Catalysts for solvent-free biomass transformation: physicochemical behavior of non-aqueous emulsions. J Colloid Interface Sci 2013; 427:80-90. [PMID: 24360842 DOI: 10.1016/j.jcis.2013.11.047] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 11/12/2013] [Accepted: 11/18/2013] [Indexed: 10/26/2022]
Abstract
A key challenge in biomass conversion is how to achieve valuable molecules with optimal reactivity in the presence of immiscible reactants. This issue is usually tackled using either organic solvents or surfactants to promote emulsification, making industrial processes expensive and not environmentally friendly. As an alternative, Pickering emulsions using solid particles with tailored designed surface properties can promote phase contact within intrinsically biphasic systems. Here we show that amphiphilic silica nanoparticles bearing a proper combination of alkyl and strong acidic surface groups can generate stable Pickering emulsions of the glycerol/dodecanol system in the temperature range of 35-130°C. We also show that such particles can perform as Pickering Interfacial Catalysts for the acid-catalyzed etherification of glycerol with dodecanol at 150°C. Our findings shed light on some key parameters governing emulsion stability and catalytic activity of Pickering interfacial catalytic systems. This understanding is critical to pave the way toward technological solutions for biomass upgrading able to promote eco-efficient reactions between immiscible organic reagents with neither use of solvents nor surfactants.
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Affiliation(s)
- Zhaoyu Fan
- Key Laboratory of Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Mei Long Rd., Shanghai 200237, PR China; Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS - Solvay, 3066 Jin Du Road, Xin Zhuang Ind. Zone, Shanghai 201108, PR China
| | - Astrid Tay
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS - Solvay, 3066 Jin Du Road, Xin Zhuang Ind. Zone, Shanghai 201108, PR China
| | - Marc Pera-Titus
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS - Solvay, 3066 Jin Du Road, Xin Zhuang Ind. Zone, Shanghai 201108, PR China
| | - Wen-Juan Zhou
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS - Solvay, 3066 Jin Du Road, Xin Zhuang Ind. Zone, Shanghai 201108, PR China
| | - Samy Benhabbari
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS - Solvay, 3066 Jin Du Road, Xin Zhuang Ind. Zone, Shanghai 201108, PR China
| | - Xiaoshuang Feng
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS - Solvay, 3066 Jin Du Road, Xin Zhuang Ind. Zone, Shanghai 201108, PR China
| | - Guillaume Malcouronne
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS - Solvay, 3066 Jin Du Road, Xin Zhuang Ind. Zone, Shanghai 201108, PR China; Laboratoire de Chimie, UMR 5182 CNRS - Ecole Normale Supérieure de Lyon, 46 allée d'Italie, 69364 Lyon, France
| | - Laurent Bonneviot
- Laboratoire de Chimie, UMR 5182 CNRS - Ecole Normale Supérieure de Lyon, 46 allée d'Italie, 69364 Lyon, France
| | - Floryan De Campo
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS - Solvay, 3066 Jin Du Road, Xin Zhuang Ind. Zone, Shanghai 201108, PR China
| | - Limin Wang
- Key Laboratory of Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Mei Long Rd., Shanghai 200237, PR China.
| | - Jean-Marc Clacens
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS - Solvay, 3066 Jin Du Road, Xin Zhuang Ind. Zone, Shanghai 201108, PR China.
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Reyjal M, Tavares JR, Virgilio N, Fradette L. Is the Maxwell–Garnett Continuum Model Valid To Predict the Thermal Conductivity of Particle-Stabilized (Pickering) Emulsions? Ind Eng Chem Res 2013. [DOI: 10.1021/ie303124p] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Margaux Reyjal
- Department of Chemical Engineering, Polytechnique Montréal, P.O. Box 6079, Station Centre-Ville,
Montréal, Québec, Canada H3C 3A7
| | - Jason R. Tavares
- Department of Chemical Engineering, Polytechnique Montréal, P.O. Box 6079, Station Centre-Ville,
Montréal, Québec, Canada H3C 3A7
| | - Nick Virgilio
- Department of Chemical Engineering, Polytechnique Montréal, P.O. Box 6079, Station Centre-Ville,
Montréal, Québec, Canada H3C 3A7
| | - Louis Fradette
- Department of Chemical Engineering, Polytechnique Montréal, P.O. Box 6079, Station Centre-Ville,
Montréal, Québec, Canada H3C 3A7
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27
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Chen J, Vogel R, Werner S, Heinrich G, Clausse D, Dutschk V. Influence of the particle type on the rheological behavior of Pickering emulsions. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2011.02.003] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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28
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Affiliation(s)
- V. B. Menon
- a Research Triangle Institute , P.O. Box 12194, Research Triangle Park , North Carolina , 27709
| | - D. T. Wasan
- b Department of Chemical Engineering , Illinois Institute of Technology , Chicago , Illinois , 60616
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29
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Sztukowski DM, Yarranton HW. Oilfield solids and water-in-oil emulsion stability. J Colloid Interface Sci 2006; 285:821-33. [PMID: 15837502 DOI: 10.1016/j.jcis.2004.12.029] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2004] [Accepted: 12/01/2004] [Indexed: 10/25/2022]
Abstract
Model water-in-hydrocarbon emulsions consisting of toluene, heptane, water, asphaltenes, and native solids were used to investigate the role of native solids in the stability of oilfield emulsions. The solids were recovered from an oil-sands bitumen, a wellhead emulsion, and a refinery slop oil. The solids were clay platelets and fell into two size categories: (1) fine solids 50 to 500 nm in diameter and (2) coarse solids 1 to 10 microm in diameter. Emulsions stabilized by fine solids and asphaltenes were most stable at a 2:1 fractional area ratio of asphaltenes to solids. It appears that when the asphaltene surface coverage is high, insufficient solids remain to make an effective barrier. When the solids coverage is high, insufficient asphaltenes remain on the interface to immobilize the solids. Treatments that weaken the interface, such as toluene dilution, are recommended for emulsions stabilized by fine solids. Emulsions stabilized by coarse solids were unstable at low solids concentrations but became very stable at solids concentrations greater than 10 kg/m(3). At low concentrations, these solids may act as bridges between water droplets and promote coalescence. At high concentrations, layers of coarse solids may become trapped between water droplets and prevent coalescence. Treatments that flocculate the solids, such as heptane dilution, are recommended for emulsions stabilized by high concentrations of coarse solids. It is possible that emulsions containing both types of solids may require more than one treatment, or even process step, for effective water resolution.
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Affiliation(s)
- Danuta M Sztukowski
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, Alberta, Canada T2N 1N4
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31
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Tikhonov AM. Water Density in the Electric Double Layer at the Insulator/Electrolyte Solution Interface. J Phys Chem B 2006; 110:2746-50. [PMID: 16471880 DOI: 10.1021/jp055597p] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
I studied the spatial structure of the thick transition region between n-hexane and a colloidal solution of 7-nm silica particles by X-ray reflectivity and grazing incidence small-angle scattering. The interfacial structure is discussed in terms of a semiquantitative interface model wherein the potential gradient at the n-hexane/sol interface reflects the difference in the potentials of "image forces" between the cationic Na(+) and anions (nanoparticles) and the specific adsorption of surface charge at the interface between the adsorbed layer and the solution, as well as at the interface between the adsorbed layer and n-hexane. The X-ray scattering data revealed that the average density of water in the field approximately 10(9)-10(10) V/m of the electrical double layer at the hexane/silica sol interface is the same as, or only few percent higher (1-7%) than, its density under normal conditions.
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Affiliation(s)
- Aleksey M Tikhonov
- University of Chicago, Consortium of Advanced Radiation Sources, Brookhaven National Laboratory, National Synchrotron Light Source, Beamline X19C, Upton, New York 11973, USA.
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32
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Marinova KG, Christova D, Tcholakova S, Efremov E, Denkov ND. Hydrophobization of glass surface by adsorption of poly(dimethylsiloxane). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:11729-37. [PMID: 16316107 DOI: 10.1021/la051690t] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Silica or glass particles are introduced in a poly(dimethylsiloxane) (PDMS) matrix for various applications. A particular feature of these systems is that PDMS adsorbs on the surface of the dispersed particles, thus rendering them more hydrophobic with time. The mechanism of this process of in situ hydrophobization is still poorly understood. The major aims of the present study are (1) to quantify the rate of surface hydrophobization by PDMS and, on this basis, to discuss the mechanism of the process; (2) to compare the contact angles of surfaces that are hydrophobized by different procedures and are placed in contact with different fluid interfaces-PDMS-water, hexadecane-water, and air-water; and (3) to check how the type of surfactant affects the contact angles, viz., the effective hydrophobicity of the surface. We present experimental results for the kinetics of hydrophobization of glass surfaces, which are characterized by measuring the three-phase contact angle of glass-surfactant solution-PDMS. The data reveal two consecutive stages in the hydrophobization process: The first stage is relatively fast and the contact angle increases from 0 degrees to about 90 degrees within several minutes. This stage is explained with the physical adsorption of the PDMS chains, as a result of hydrogen-bond formation with the surface silanol groups. The second stage is much slower and hours or days are required at room temperature to reach the final contact angle (typically, 150-160 degrees). This stage is explained as grafting of the PDMS molecules on the surface by chemical reaction with the surface silanol groups. If the glass surface had been pretreated by hexamethyldisilazane (HMDS), so that CH(3) groups had blocked most of the surface silanol groups, the first stage in the hydrophobization process is almost missing-the contact angle slowly changes at room temperature from about 90 degrees up to 120 degrees. The experiments aimed to compare several hydrophobization procedures showed that PDMS ensures larger contact angle (more hydrophobic surface) than grafted alkyl chains. The contact angles at the PDMS-water and hexadecane-water interfaces were found to be very similar to each other, and much larger than that at the air-water interface. Interestingly, we found that the ionic surfactants practically do not affect the contact angle of PDMS-hydrophobized surface, whereas the nonionic surfactants reduce this angle. Similar trends are expected with silica surfaces, as well.
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Affiliation(s)
- Krastanka G Marinova
- Laboratory of Chemical Physics & Engineering, Faculty of Chemistry, Sofia University, Bulgaria
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Roy-Perreault A, Kueper BH, Rawson J. Formation and stability of polychlorinated biphenyl Pickering emulsions. JOURNAL OF CONTAMINANT HYDROLOGY 2005; 77:17-39. [PMID: 15722171 DOI: 10.1016/j.jconhyd.2004.11.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2004] [Revised: 10/30/2004] [Accepted: 11/05/2004] [Indexed: 05/24/2023]
Abstract
An emulsion stabilized by colloidal suspensions of finely divided solids is known as a Pickering emulsion. The potential for polychlorinated biphenyls (PCBs) to form Pickering emulsions ex situ when in contact with powdered solids, such as clays and metal oxides, is investigated here. Bentonite, iron oxide and magnesium oxide dispersions proved to be robust Pickering emulsion stabilizers, whereas manganese oxide dispersions were not. Batch experiments revealed that emulsions can be formed using a moderately low energy input and can be stabilized with solid concentrations as low as 0.5 wt.%. For the base conditions (volumetric oil fraction (phi(oil))=30 vol.%; solid concentration (chi)=2 wt.%), the formed emulsions were indefinitely stable and the initial average droplet diameters varied from 80 to 258 mum, depending on the solid used in the colloidal dispersion. The average droplet size varied at early time, but for most conditions stabilized to a steady-state value 1 week after preparation. The effect of Ostwald ripening was limited. At greater than 0.5 wt.% concentration, the efficiency of the solid dispersion as a stabilizer was dependant on the volumetric oil fraction but not on the solid concentration. Generally, systems with volumetric oil fractions outside of the 20-70 vol.% range were unstable. The emulsions' droplet stability, average droplet size and size distribution were observed to vary as a function of the amount of energy provided to the system, the volumetric oil fraction, and the concentration of the solid in the aqueous dispersion. It is hypothesized that drilling through fractured rock in the immediate vicinity of dense, non-aqueous phase liquid (DNAPL) PCBs may provide both the energy and solid material necessary to form Pickering emulsions.
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Affiliation(s)
- Andréanne Roy-Perreault
- Civil Engineering Department, Faculty of Applied Science, Ellis Hall, University Avenue, Queen's University, Kingston, Ontario, Canada K7L 3N6
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34
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Ese M, Selsbak CM, Hannisdal A, Sjöblom J. Emulsions Stabilized by Indigenous Reservoir Particles: Influence of Chemical Additive. J DISPER SCI TECHNOL 2005. [DOI: 10.1081/dis-200045561] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
Summary
The formation of emulsions during oil production is a costly problem, both in terms of chemicals used and production lost. This paper discusses production and operational problems related to crude-oil emulsions and presents a review that will be useful for practicing engineers.
The first part of this paper presents why emulsions form during oil production, the types of emulsions encountered, and new methods for characterizing them. Crude-oil emulsions are stabilized by rigid interfacial films that form a "skin" on water droplets and prevent the droplets from coalescing. The stability of these interfacial films, and hence, the stability of the emulsions, depends on a number of factors, including the heavy material in the crude oil (e.g., asphaltenes, resins, and waxes), solids (e.g., clays, scales, and corrosion products), temperature, droplet size and droplet-size distribution, pH, and oil and brine composition. The effects of these factors on emulsion stability are reviewed within this paper.
The second part of this paper presents methods to tackle crude-oil emulsions. The focus is on the destabilization of emulsions and the demulsification process. Emulsions are destabilized by increasing temperature and residence time, removal of solids, and controlling emulsifiers. The mechanisms involved in demulsification (e.g., flocculation, aggregation, sedimentation, creaming, and coalescence) are discussed in terms of the stability of the interfacial films. The methods involved in demulsification—including thermal, mechanical, electrical, and chemical—are also presented. Experience and economics determine which methods are used, and to what degree, for emulsion treatment.
Finally, a section on field applications also is included that should be useful for the practicing engineer who deals with emulsions either regularly or on a limited basis. Herein the field-emulsion treatment program is discussed, and more importantly, methods to prevent emulsion problems are highlighted. Recommendations are made for reducing and optimizing demulsifier dosage and controlling emulsion problems.
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Sztukowski DM, Yarranton HW. Characterization and Interfacial Behavior of Oil Sands Solids Implicated in Emulsion Stability. J DISPER SCI TECHNOL 2004. [DOI: 10.1081/dis-120037692] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang W, Zhou Z, Nandakumar K, Xu Z, Masliyah JH. Effect of charged colloidal particles on adsorption of surfactants at oil–water interface. J Colloid Interface Sci 2004; 274:625-30. [PMID: 15144838 DOI: 10.1016/j.jcis.2004.03.049] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2003] [Accepted: 03/18/2004] [Indexed: 11/23/2022]
Abstract
A change of oil/water interfacial tension in the presence of cationic or anionic surfactants in an organic phase was observed due to the addition of charged fine solids in the aqueous phase. The charged fine solids in the aqueous phase adsorb surfactants diffused from the oil phase, thereby causing an increase in the bulk equilibrium surfactant concentration in the aqueous phase, governed by the Stern-Grahame equation. Consequently, surfactant adsorption at the oil-water interface increases, which was demonstrated from the measured reduction of the oil-water interfacial tension. The increased surfactant partition in the aqueous phase in the presence of the charged particles was confirmed by the measured decrease in the surface tension for the collected aqueous solution after solids removal, as compared with the cases without solids addition.
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Affiliation(s)
- Weixing Wang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2G6
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38
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Yang J, Wang TJ, He H, Wei F, Jin Y. Particle Size Distribution and Morphology of in Situ Suspension Polymerized Toner. Ind Eng Chem Res 2003. [DOI: 10.1021/ie0301029] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jun Yang
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084 China
| | - Ting-Jie Wang
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084 China
| | - Hong He
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084 China
| | - Fei Wei
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084 China
| | - Yong Jin
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084 China
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Al-Sabagh AM, Nehal SA, Amal MN, Gabr M. Synthesis and evaluation of some polymeric surfactants for treating crude oil?Part II. Destabilization of naturally occurring water-in-oil emulsions by polyalkylphenol formaldehyde amine resins. POLYM ADVAN TECHNOL 2002. [DOI: 10.1002/pat.197] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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40
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Niven RK, Khalili N, Brynn Hibbert D. Mixed solid/dispersed phase particles in multiphase fluidised beds, Part I: Free energy of stability due to interfacial tension. Chem Eng Sci 2000. [DOI: 10.1016/s0009-2509(99)00576-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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41
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Niven R, Khalili N, Hibbert D. Mixed solid/dispersed phase particles in multiphase fluidised beds. II: Stability at laminar to turbulent flow scales. Chem Eng Sci 2000. [DOI: 10.1016/s0009-2509(99)00466-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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43
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Zhai X, Efrima S. Chemical and Physical Aspects of Macroemulsions Stabilized by Interfacial Colloids. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp953171c] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- X. Zhai
- Department of Chemistry, Ben Gurion University of the Negev, P.O. Box 653, Beer-Sheva, Israel 84105
| | - S. Efrima
- Department of Chemistry, Ben Gurion University of the Negev, P.O. Box 653, Beer-Sheva, Israel 84105
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Stewart A, EI-Hamouz A, Davies G. EFFECT OF CHEMICAL ADDITIVES ON THE STABILITY OF KEROSENE-WATER DISPERSIONS. J DISPER SCI TECHNOL 1996. [DOI: 10.1080/01932699608943531] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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45
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Urdahl O, Sjöblom J. Water-in-crude oil emulsions from the Norwegian Continental Shelf. A stabilization and destabilization study. J DISPER SCI TECHNOL 1995. [DOI: 10.1080/01932699508943707] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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46
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Yan Y, Masliyah JH. Solids-stabilized oil-in-water emulsions: Scavenging of emulsion droplets by fresh oil addition. Colloids Surf A Physicochem Eng Asp 1993. [DOI: 10.1016/0927-7757(93)80423-c] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Affiliation(s)
- H Walter
- Laboratory of Chemical Biology, Veterans Affairs Medical Center, Long Beach, California 90822
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Stabilization of emulsions by fine particles I. Partitioning of particles between continuous phase and oil/water interface. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/0166-6622(89)80271-9] [Citation(s) in RCA: 394] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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