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Zhu P, Chen J, Ding Y, Liu P, Fan H, Yang M. pH/Ion Dual-Responsive Emulsion Via a Cationic Surfactant and Positively Charged Magnesium Hydroxide Nanosheets. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:5360-5368. [PMID: 38427799 DOI: 10.1021/acs.langmuir.3c03830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
Emulsions, formed by dispersing a liquid into another immiscible one by virtue of emulsifiers, have been widely applied in commercial applications like foods, pharmaceuticals, cosmetics, and personal care, which always confront environmental and/or toxic questions due to emulsifiers' high dosage. Recently, a study on Pickering emulsions points out a solution to stable emulsions based on the costabilizing effect of colloidal particles, which focused on surface-active particles cooperating with oppositely charged ionic surfactants. Costabilized emulsions adopting a charge-similar ionic surfactant and particles were less studied. In this article, a hexane-in-water emulsion was prepared in use of a cationic surfactant cetyltrimethylammonium bromide (CTAB) with positively charged magnesium hydroxide (MH) nanosheets at low concentrations (10-5 M and 10-2 wt %, respectively). The emulsion is stable due to the synergy by CTAB and MH nanosheets, which functions in virtue of the electric repulsion by similarly charged particles, the mechanical shielding by MH nanosheets, and restrained water drainage in lamellae between droplets due to the gelation of MH nanosheets. Moreover, the emulsion is doubly switchable within emulsification/demulsification via convenient pH or ion manipulation, a mechanism based on the breakdown and rebuilding of the costabilizing synergy. Such dual-responsive emulsions show high potential for the delicate control of drug delivery, release, and biphasic biocatalysis applications.
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Affiliation(s)
- Pei Zhu
- Beijing National Laboratory for Molecular Science, Key Laboratory of Engineering Plastics, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100149, P. R. China
| | - Juan Chen
- Beijing National Laboratory for Molecular Science, Key Laboratory of Engineering Plastics, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yanfen Ding
- Beijing National Laboratory for Molecular Science, Key Laboratory of Engineering Plastics, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Peng Liu
- Beijing National Laboratory for Molecular Science, Key Laboratory of Engineering Plastics, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Haijun Fan
- Beijing National Laboratory for Molecular Science, Key Laboratory of Engineering Plastics, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Mingshu Yang
- Beijing National Laboratory for Molecular Science, Key Laboratory of Engineering Plastics, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100149, P. R. China
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2
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Mohammed S, Liu M, Zhang Q, Narayanan S, Zhang F, Gadikota G. Resolving Salt-Induced Agglomeration of Laponite Suspensions Using X-ray Photon Correlation Spectroscopy and Molecular Dynamics Simulations. MATERIALS (BASEL, SWITZERLAND) 2022; 16:101. [PMID: 36614439 PMCID: PMC9820912 DOI: 10.3390/ma16010101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/04/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Linking the physics of the relaxation behavior of viscoelastic fluids as they form arrested gel states to the underlying chemical changes is essential for developing predictive controls on the properties of the suspensions. In this study, 3 wt.% laponite suspensions are studied as model systems to probe the influence of salt-induced relaxation behavior arising from the assembly of laponite nanodisks. X-ray Photon Correlation Spectroscopy (XPCS) measurements show that laponite suspensions prepared in the presence of 5 mM concentrations of CaCl2, MgCl2 and CsCl salts accelerate the formation of arrested gel states, with CaCl2 having a significant impact followed by CsCl and MgCl2 salts. The competing effects of ion size and charge on relaxation behavior are noted. For example, the relaxation times of laponite suspensions in the presence of Mg2+ ions are slower compared to Cs+ ions despite the higher charge, suggesting that cation size dominates in this scenario. The faster relaxation behavior of laponite suspensions in the presence of Ca2+ ions compared to Cs+ ions shows that a higher charge dominates the size of the ion. The trends in relaxation behavior are consistent with the cluster formation behavior of laponite suspensions and the electrostatic interactions predicted from MD simulations. Charge balance is achieved by the intercalation of the cations at the negatively charged surfaces of laponite suspensions. These studies show that the arrested gel state of laponite suspensions is accelerated in the presence of salts, with ion sizes and charges having a competing effect on relaxation behavior.
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Affiliation(s)
- Sohaib Mohammed
- School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Meishen Liu
- School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Qingteng Zhang
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Suresh Narayanan
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Fan Zhang
- Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Greeshma Gadikota
- School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
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3
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Xue L, Li H, Pei X, Cui Z, Song B. Pickering Emulsions Synergistically Stabilized by Aliphatic Primary Amines and Silica Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14109-14117. [PMID: 36349864 DOI: 10.1021/acs.langmuir.2c02072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Innovation in emulsion compositions is necessary to enrich emulsion formulations and applications. Herein, Pickering emulsions were prepared using silica nanoparticles and aliphatic primary amines with an oil-water ratio of 1:1 (v/v). Contact angle experiments revealed that the in situ hydrophobization of nanoparticles was caused by the surface adsorption of amine molecules. Notably, the interactions between amine compounds and the surface of silica nanoparticles were electrostatic attractions and mutual hydrogen bonding. The existence of hydrogen bonds was further confirmed by demulsification experiments using a chaotropic agent DMF and increasing temperatures. The hydrophobicity of silica nanoparticles can be effectively improved using most commercially available aliphatic primary amines such as n-hexylamine, n-octylamine, n-decylamine, dodecylamine, and tetradecylamine. The minimum concentrations of the aforementioned amines necessary for stabilizing the emulsions with 0.3 wt % silica nanoparticles are 3, 0.6, 0.3, 0.06, and 0.03 mM, respectively, decreasing significantly with increasing alkyl chain length. With the increase of the amine concentrations, the hydrophobicity of silica particles monotonically increased and finally resulted in the inversion of emulsions. The amine concentrations for emulsion phase inversion were 150, 40, 30, 20, and 20 mM, respectively, in the presence of 0.3 wt % silica nanoparticles. In this work, silica nanoparticles were hydrophobized using aliphatic primary amines. The composite stabilizers developed are useful for developing novel stimuli-responsive Pickering emulsions, while the synergistic effects introduced herein are also helpful in expanding the hydrophobization methods available for nanoparticles.
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Affiliation(s)
- Linyu Xue
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hongye Li
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xiaomei Pei
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Zhenggang Cui
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Binglei Song
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
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4
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Machrafi H. Surface tension of nanoparticle dispersions unravelled by size-dependent non-occupied sites free energy versus adsorption kinetics. NPJ Microgravity 2022; 8:47. [PMID: 36323719 PMCID: PMC9630414 DOI: 10.1038/s41526-022-00234-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 10/12/2022] [Indexed: 11/06/2022] Open
Abstract
The surface tension of dispersions presents many types of behaviours. Although some models, based on classical surface thermodynamics, allow partial interpretation, fundamental understanding is still lacking. This work develops a single analytical physics-based formulation experimentally validated for the surface tension of various pure nanoparticle dispersions, explaining the underlying mechanisms. Against common belief, surface tension increase of dispersions appears not to occur at low but rather at intermediate surface coverage, owed by the relatively large size of nanoparticles with respect to the fluid molecules. Surprisingly, the closed-form model shows that the main responsible mechanism for the various surface tension behaviours is not the surface chemical potential of adsorbed nanoparticles, but rather that of non-occupied sites, triggered and delicately controlled by the nanoparticles ‘at a distance’, introducing the concept of the ‘non-occupancy’ effect. The model finally invites reconsidering surface thermodynamics of dispersions and provides for criteria that allow in a succinct manner to quantitatively classify the various surface tension behaviours.
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Affiliation(s)
- Hatim Machrafi
- grid.4861.b0000 0001 0805 7253Université de Liège, Institut de Physique, Liège, 4000 Belgium ,grid.4989.c0000 0001 2348 0746Université libre de Bruxelles, Physical Chemistry Group, Bruxelles, 1050 Belgium ,grid.462844.80000 0001 2308 1657Sorbonne Université, UFR Physique, Paris, 75005 France
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5
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Zheng R, Tian J, Binks BP, Cui Z, Xia W, Jiang J. Oil-in-Water emulsions stabilized by alumina nanoparticles with organic electrolytes: Fate of particles. J Colloid Interface Sci 2022; 627:749-760. [PMID: 35878465 DOI: 10.1016/j.jcis.2022.07.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 11/17/2022]
Abstract
HYPOTHESIS Oil-in-dispersion emulsions can be stabilized by like charged particles and surfactant. Surfactant adsorbs at the oil-water interface to reduce the interfacial tension and endow the interface with charge, while particles remain dispersed in the aqueous phase to provide electrostatic repulsion between droplets and particles. Can weakly surface-active organic electrolytes adsorb at the oil-water interface and behave like surfactants in stabilizing oil-in-dispersion emulsions with like charged particles? EXPERIMENTS Symmetrical organic electrolytes, tetraalkylammonium bromides (R4NBr), with either no or very low interfacial activity endowing oil droplets with charge were combined with alumina nanoparticles to stabilize emulsions. The effect of R chain length (varying from methyl to butyl) on the type and stability of emulsions was investigated. FINDINGS Mixtures of high concentrations of short chain R4NBr salts (R = methyl or ethyl) and alumina particles stabilise oil-in-water Pickering emulsions, whereas longer chain (R = propyl or butyl) analogues stabilize oil-in-dispersion emulsions assisted by alumina particles. Tetrapropylammonium and tetrabutylammonium cations adsorb at the oil-water interface reducing the interfacial tension and endowing the interface with charge. The stability of the oil-in-dispersion emulsions is dominated by the electrostatic repulsion between the droplets and between droplets and particles in the continuous aqueous phase.
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Affiliation(s)
- Raojun Zheng
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Jingjing Tian
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Bernard P Binks
- Department of Chemistry, University of Hull, Hull HU6 7RX. UK
| | - Zhenggang Cui
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Wenshui Xia
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Jianzhong Jiang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China.
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A nanosheet-based combination emulsifier system for bulk-scale production of emulsions with elongated droplets and long-term stability. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Lu Y, Zhu Y, Yang F, Xu Z, Liu Q. Advanced Switchable Molecules and Materials for Oil Recovery and Oily Waste Cleanup. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2004082. [PMID: 34047073 PMCID: PMC8336505 DOI: 10.1002/advs.202004082] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 01/19/2021] [Indexed: 05/07/2023]
Abstract
Advanced switchable molecules and materials have shown great potential in numerous applications. These novel materials can express different states of physicochemical properties as controlled by a designated stimulus, such that the processing condition can always be maintained in an optimized manner for improved efficiency and sustainability throughout the whole process. Herein, the recent advances in switchable molecules/materials in oil recovery and oily waste cleanup are reviewed. Oil recovery and oily waste cleanup are of critical importance to the industry and environment. Switchable materials can be designed with various types of switchable properties, including i) switchable interfacial activity, ii) switchable viscosity, iii) switchable solvent, and iv) switchable wettability. The materials can then be deployed into the most suitable applications according to the process requirements. An in-depth discussion about the fundamental basis of the design considerations is provided for each type of switchable material, followed by details about their performances and challenges in the applications. Finally, an outlook for the development of next-generation switchable molecules/materials is discussed.
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Affiliation(s)
- Yi Lu
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAlbertaT6G 1H9Canada
| | - Yeling Zhu
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAlbertaT6G 1H9Canada
| | - Fan Yang
- College of New Materials and New EnergiesShenzhen Technology UniversityShenzhen518118P. R. China
| | - Zhenghe Xu
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAlbertaT6G 1H9Canada
- Department of Materials Science and EngineeringSouthern University of Science and TechnologyShenzhen518055P. R. China
| | - Qingxia Liu
- Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAlbertaT6G 1H9Canada
- College of New Materials and New EnergiesShenzhen Technology UniversityShenzhen518118P. R. China
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8
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Yang Y, Chen J, Ma G, Yang D. Waterborne Cross-Linkable Polyacrylate Latex Coatings with Good Water Resistance and Strength Stabilized by Modified Hectorite. Polymers (Basel) 2021; 13:polym13152470. [PMID: 34372074 PMCID: PMC8347736 DOI: 10.3390/polym13152470] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/18/2021] [Accepted: 07/23/2021] [Indexed: 11/16/2022] Open
Abstract
Polyacrylate emulsions were prepared by Pickering emulsion polymerization with multi-modified hectorite as a modifier. The proper wettability of modified hectorite and the stability of O/W emulsions prove that modified hectorite has good emulsification properties. The stability of polyacrylate latexes and the morphology of polymer latex particles were then investigated to explain the role of multi-modified hectorite in stabilizing polyacrylate latex. In addition, the improved mechanical properties and water resistance of the latex make it a potentially excellent coating. Multi-modified hectorite as an alternative modifier to conventional surfactants offers a potential application of nanosolid particles that meet the partial wetting conditions for water and oil as stabilizers for the production of latexes for coatings.
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Affiliation(s)
- Yunfan Yang
- Correspondence: or (Y.Y.); (J.C.); Tel.: +86-21-6613-7729 (J.C.); Fax: +86-21-6613-7725 (J.C.)
| | - Jinyang Chen
- Correspondence: or (Y.Y.); (J.C.); Tel.: +86-21-6613-7729 (J.C.); Fax: +86-21-6613-7725 (J.C.)
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9
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Tuning morphology of Pickering emulsions stabilised by biodegradable PLGA nanoparticles: How PLGA characteristics influence emulsion properties. J Colloid Interface Sci 2021; 595:202-211. [PMID: 33823323 DOI: 10.1016/j.jcis.2021.03.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 03/05/2021] [Accepted: 03/11/2021] [Indexed: 11/20/2022]
Abstract
In this study, we proved that the stabilisation of Pickering emulsions by polymer nanoparticles (NPs) heavily depends on polymer characteristics. We prepared NPs with four poly(lactide-co-glycolide) polymers (PLGA), of different molar masses (14,000 and 32,000 g/mol) and end groups (acid or alkylester). NPs were either bare (without stabilising polymer) or covered by polyvinyl alcohol (PVA). Pickering emulsions were prepared by mixing NP aqueous suspensions with various amounts of oil (Miglyol 812 N). First, NP wettability was directly affected by PLGA end group: ester-ending PLGA led to more hydrophobic NPs, compared to acid-ending PLGA. This effect of the end group could be slightly enhanced with smaller molar mass. Thus, bare PLGA NPs stabilised different types of emulsions (W/O/W and W/O), following Finkle's rule. However, the effect of PLGA characteristics was masked when NPs were covered by PVA, as PVA drove the stabilisation of O/W emulsions. Secondly, PLGA molar mass and end group also influenced its glass transition temperature (Tg), with spectacular consequences on emulsion formation. Indeed, the shortest ester-ending PLGA exhibited a Tg close to room temperature, when measured in the emulsion. This Tg, easily exceeded during emulsification process, led to a soft solid emulsion, stabilised by a network of NP debris.
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10
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Michels-Brito PH, Malfatti-Gasperini A, Mayr L, Puentes-Martinez X, Tenório RP, Wagner DR, Knudsen KD, Araki K, Oliveira RG, Breu J, Cavalcanti LP, Fossum JO. Unmodified Clay Nanosheets at the Air-Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:160-170. [PMID: 33373239 PMCID: PMC8154875 DOI: 10.1021/acs.langmuir.0c02670] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 12/16/2020] [Indexed: 05/31/2023]
Abstract
Quasi-two-dimensional (2D) nanolayers, such as graphene oxide or clay layers, adhere to gas-liquid or liquid-liquid interfaces. Particularly, clays are of wide general interest in this context because of their extensive and crucial use as Pickering emulsion stabilizers, as well as for their ability to provide colloidosome capsules. So far, clays could only be localized at oil-water or air-saline-water interfaces in aggregated states, while our results now show that clay nanosheets without any modification can be located at air-deionized-water interfaces. The clay mineral used in the present work is synthetic fluorohectorite with a very high aspect ratio and superior quality in homogeneity and charge distribution compared to other clay minerals. This clay mineral is more suitable for achieving unmodified clay anchoring to fluid interfaces compared to other clay minerals used in previous works. In this context, we studied clay nanosheet organization at the air-water interface by combining different experimental methods: Langmuir-Blodgett trough studies, scanning electron microscopy (SEM) studies of film deposits, grazing-incidence X-ray off-specular scattering (GIXOS), and Brewster angle microscopy (BAM). Clay films formed at the air-water interface could be transferred to solid substrates by the Langmuir-Schaefer method. The BAM results indicate a dynamic equilibrium between clay sheets on the interface and in the subphase. Because of this dynamic equilibrium, the Langmuir monolayer surface pressure does not change significantly when pure clay sheets are spread on the liquid surface. However, also, GIXOS results confirm that there are clay nanosheets at the air-water interface. In addition, we find that clay sheets modified by a branched polymer are much more likely to be confined to the interface.
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Affiliation(s)
- Paulo H. Michels-Brito
- Department
of Physics, Norwegian University of Science
and Technology, NTNU, 7491 Trondheim, Norway
| | - Antonio Malfatti-Gasperini
- Brazilian
Synchrotron Light Laboratory, LNLS, Brazilian
Center for Research in Energy and Materials, CNPEM, Campinas 13083-970, Brazil
| | - Lina Mayr
- Bavarian
Polymer Institute and Department of Chemistry, University of Bayreuth, 95440 Bayreuth, Germany
| | | | - Rômulo P. Tenório
- Northeast
Regional Center of Nuclear Sciences, Recife 50740-545,Brazil
| | - Daniel R. Wagner
- Bavarian
Polymer Institute and Department of Chemistry, University of Bayreuth, 95440 Bayreuth, Germany
| | - Kenneth D. Knudsen
- Department
of Physics, Norwegian University of Science
and Technology, NTNU, 7491 Trondheim, Norway
- Institute
for Energy Technology, IFE, Kjeller 2027, Norway
| | - Koiti Araki
- Department
of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, USP, São Paulo 05513-970, Brazil
| | - Rafael G. Oliveira
- Centro
de Investigaciones en Química Biológica de Córdoba
(CIQUIBIC)-Departamento de Química Biológica Dr. Ranwel
Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba X5000HUA, Argentina
| | - Josef Breu
- Bavarian
Polymer Institute and Department of Chemistry, University of Bayreuth, 95440 Bayreuth, Germany
| | | | - Jon Otto Fossum
- Department
of Physics, Norwegian University of Science
and Technology, NTNU, 7491 Trondheim, Norway
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11
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Xu M, Zhang W, Jiang J, Pei X, Zhu H, Cui Z, Binks BP. Transition between a Pickering Emulsion and an Oil-in-Dispersion Emulsion Costabilized by Alumina Nanoparticles and a Cationic Surfactant. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:15543-15551. [PMID: 33332125 DOI: 10.1021/acs.langmuir.0c02892] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The transition between a novel oil-in-dispersion emulsion and an oil-in-water (O/W) Pickering emulsion triggered by pH was achieved using alumina nanoparticles in combination with a cationic surfactant. In acidic and neutral aqueous media, positively charged particles and the surfactant both at very low concentrations costabilize an oil-in-dispersion emulsion with the surfactant adsorbed at droplet interfaces and particles dispersed in the aqueous phase between the droplets. In alkaline media, however, particles become negatively charged and are hydrophobized in situ by adsorption of the surfactant to become surface-active and stabilize an O/W Pickering emulsion. The transition between the two is also possible by lowering the pH. The transformation can be achieved several times in a mixture of 0.1 wt % nanoparticles and 0.01 mM surfactant. This transition is significant, since particles can be made to either adsorb at the oil-water interface, which is beneficial for applications like biphasic catalysis, or remain dispersed in the aqueous phase, which is favorable for their recovery and reuse.
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Affiliation(s)
- Maodong Xu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, P. R. China
- School of Biological and Chemical Engineering, Anhui Polytechnic University, 8 Beijing Road, Wuhu 241000, P. R. China
| | - Wanqing Zhang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, P. R. China
| | - Jianzhong Jiang
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, P. R. China
| | - Xiaomei Pei
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, P. R. China
| | - Haiyan Zhu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, P. R. China
| | - Zhenggang Cui
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, P. R. China
| | - Bernard P Binks
- Department of Chemistry, University of Hull, Hull HU6 7RX, U.K
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12
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Characterization of Pickering emulsions stabilized by OSA-modified sweet potato residue cellulose: Effect of degree of substitute and concentration. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105915] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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Mayr L, Breu J. Encapsulation of Fragrance in Aqueous Emulsions by Delaminated Synthetic Hectorite. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:11061-11067. [PMID: 32882135 DOI: 10.1021/acs.langmuir.0c02025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Fragrance emulsions are used in many applications in daily life. Since a lot of fragrances are quite volatile substances, their release rate from emulsions is a crucial factor. Since in most cases a mixture of fragrances is applied, the olfactory impression might change over time if the release rates of individual components differ significantly. For such applications, encapsulation with barrier materials is sought to retard release in an unselective manner. Stable fragrance-in-water emulsions were made by applying a synthetic hectorite as Pickering emulsifier which was fixed as a multilayer stack at the oil-water interface by adding poly(ethylene imine). The release of different fragrance molecules (eucalyptol, limonene, α-pinene, and ethyl-2-methylbutyrate) from these emulsions was studied as the ratio between hectorite and poly(ethylene imine) was varied. While the release rates of all fragrances were retarded by the hybrid capsule acting as a nonselective barrier, the relative release was determined by the solubility of individual fragrances in the capsule material. Fragrance release could be further reduced by additional chemical cross-linking of poly(ethylene imine).
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Affiliation(s)
- Lina Mayr
- Department of Chemistry and Bavarian Polymer Institute, University of Bayreuth, 95447 Bayreuth, Germany
| | - Josef Breu
- Department of Chemistry and Bavarian Polymer Institute, University of Bayreuth, 95447 Bayreuth, Germany
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14
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Is the combination of two particles with different degrees of hydrophobicity an alternative method for tuning the average particle hydrophobicity? J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Ibrahim DM, Sani ES, Soliman AM, Zandi N, Mostafavi E, Youssef AM, Allam NK, Annabi N. Bioactive and Elastic Nanocomposites with Antimicrobial Properties for Bone Tissue Regeneration. ACS APPLIED BIO MATERIALS 2020; 3:3313-3325. [DOI: 10.1021/acsabm.0c00250] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Dina M. Ibrahim
- Energy Materials Laboratory (EML), School of Sciences and Engineering, The American University in Cairo, New Cairo, 11835, Egypt
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Ehsan Shirzaei Sani
- Department of Chemical and Biomolecular Engineering, University of California—Los Angeles, Los Angeles, California 90095, United States
| | - Alaa M. Soliman
- Energy Materials Laboratory (EML), School of Sciences and Engineering, The American University in Cairo, New Cairo, 11835, Egypt
| | - Nooshin Zandi
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran 11365-11155, Iran
| | - Ebrahim Mostafavi
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Ahmed M. Youssef
- Packaging Materials Department, National Research Centre, Giza, 12622, Egypt
| | - Nageh K. Allam
- Energy Materials Laboratory (EML), School of Sciences and Engineering, The American University in Cairo, New Cairo, 11835, Egypt
| | - Nasim Annabi
- Department of Chemical and Biomolecular Engineering, University of California—Los Angeles, Los Angeles, California 90095, United States
- Center for Minimally Invasive Therapeutics (C-MIT), California NanoSystems Institute (CNSI), University of California—Los Angeles, Los Angeles, California 90095, United States
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16
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Vassaux S, Savary G, Le Pluart L, Grisel M. On the key role of process parameters to control stability and properties of Pickering emulsions stabilized by montmorillonite. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123952] [Citation(s) in RCA: 6] [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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17
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Tran L, Haase MF. Templating Interfacial Nanoparticle Assemblies via in Situ Techniques. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8584-8602. [PMID: 30808166 DOI: 10.1021/acs.langmuir.9b00130] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In situ surface modification of nanoparticles has a rich industrial history, but in recent years, it has also received increased attention in the field of directed self-assembly. In situ techniques rely on components within a Pickering emulsion system, such as amphiphiles that act as hydrophobizers or ionic species that screen charges, to drive the interfacial assembly of particles. Instead of stepwise procedures to chemically tune the particle wettability, in situ methods use elements already present within the system to alter the nanoparticle interfacial behavior, often depending on Coulombic interactions to simplify operations. The surface modifications are not contingent on specific chemical reactions, which further enables a multitude of possible nanoparticles to be used within a given system. In recent studies, in situ methods have been combined with external means of shaping the interface to produce materials with high interfacial areas and complex geometries. These systems have facilely tunable properties, enabling their use in an extensive array of applications. In this feature article, in honor of the late Prof. Helmuth Möhwald, we review how in situ techniques have influenced the development of soft, advanced materials, covering the fundamental interfacial phenomena with an outlook on materials science.
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Affiliation(s)
- Lisa Tran
- Department of Chemical Engineering , Columbia University , New York , New York 10027 , United States
| | - Martin F Haase
- Department of Chemical Engineering , Rowan University , Glassboro , New Jersey 08028 , United States
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18
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Pickering emulsions stabilized by compound modified areca taro (Colocasia esculenta (L.) Schott) starch with ball-milling and OSA. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.08.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Bulavin L, Lisetski L, Minenko S, Samoilov A, Klepko V, Bohvan S, Lebovka N. Microstructure and optical properties of nematic and cholesteric liquid crystals doped with organo-modified platelets. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.12.078] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Wei P, Luo Q, Edgehouse KJ, Hemmingsen CM, Rodier BJ, Pentzer EB. 2D Particles at Fluid-Fluid Interfaces: Assembly and Templating of Hybrid Structures for Advanced Applications. ACS APPLIED MATERIALS & INTERFACES 2018; 10:21765-21781. [PMID: 29897230 DOI: 10.1021/acsami.8b07178] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Fluid-fluid interfaces have widespread applications in personal care products, the food industry, oil recovery, mineral processes, etc. and are also important and versatile platforms for generating advanced materials. In Pickering emulsions, particles stabilize the fluid-fluid interface, and their presence reduces the interfacial energy between the two fluids. To date, most Pickering emulsions stabilized by 2D particles make use of clay platelets or GO nanosheets. These systems have been used to template higher order hybrid, functional materials, most commonly, armored polymer particles, capsules, and Janus nanosheets. This review discusses the experimental and computational study of the assembly of sheet-like 2D particles at fluid-fluid interfaces, with an emphasis on the impact of chemical composition, and the use of these assemblies to prepare composite structures of dissimilar materials. The review culminates in a perspective on the future of Pickering emulsions using 2D particle surfactants, including new chemical modification and types of particles as well as the realization of properties and applications not possible with currently accessible systems, such as lubricants, porous structures, delivery, coatings, etc.
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Affiliation(s)
- Peiran Wei
- Department of Chemistry , Case Western Reserve University , 10900 Euclid Avenue , Cleveland , Ohio 44106 , United States
| | - Qinmo Luo
- Department of Chemistry , Case Western Reserve University , 10900 Euclid Avenue , Cleveland , Ohio 44106 , United States
| | - Katelynn J Edgehouse
- Department of Chemistry , Case Western Reserve University , 10900 Euclid Avenue , Cleveland , Ohio 44106 , United States
| | - Christina M Hemmingsen
- Department of Chemistry , Case Western Reserve University , 10900 Euclid Avenue , Cleveland , Ohio 44106 , United States
| | - Bradley J Rodier
- Department of Chemistry , Case Western Reserve University , 10900 Euclid Avenue , Cleveland , Ohio 44106 , United States
| | - Emily B Pentzer
- Department of Chemistry , Case Western Reserve University , 10900 Euclid Avenue , Cleveland , Ohio 44106 , United States
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21
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Xiao M, Xu A, Zhang T, Hong L. Tailoring the Wettability of Colloidal Particles for Pickering Emulsions via Surface Modification and Roughness. Front Chem 2018; 6:225. [PMID: 29971230 PMCID: PMC6018170 DOI: 10.3389/fchem.2018.00225] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 05/30/2018] [Indexed: 11/13/2022] Open
Abstract
Pickering emulsions are water or oil droplets that are stabilized by colloidal particles and have been intensely studied since the late 90s. The surfactant-free nature of these emulsions has little adverse effects such as irritancy and contamination of environment and typically exhibit enhanced stability compared to surfactant-stabilized emulsions. Therefore, they offer promising applications in cosmetics, food science, controlled release, and the manufacturing of microcapsules and porous materials. The wettability of the colloidal particles is the main parameter determining the formation and stability of Pickering emulsions. Tailoring the wettability by surface chemistry or surface roughness offers considerable scope for the design of a variety of hybrid nanoparticles that may serve as novel efficient Pickering emulsion stabilizers. In this review, we will discuss the recent advances in the development of surface modification of nanoparticles.
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Affiliation(s)
| | | | | | - Liangzhi Hong
- Department of Polymer Materials Science and Engineering, South China University of Technology, Guangzhou, China
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22
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Zhao Q, Liu W, Li G, Lucia LA, Wang H, Yu D. Unique alkyl ketene dimer Pickering-based dispersions: Preparation and application to paper sizing. J Appl Polym Sci 2018. [DOI: 10.1002/app.45730] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Qi Zhao
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education); Qilu University of Technology; Jinan Shandong 250353 China
| | - Wenxia Liu
- Department of Forest Biomaterials, College of Natural Resources; North Carolina State University; Raleigh North Carolina 27695
| | - Guodong Li
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education); Qilu University of Technology; Jinan Shandong 250353 China
| | - Lucian A. Lucia
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education); Qilu University of Technology; Jinan Shandong 250353 China
| | - Huili Wang
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education); Qilu University of Technology; Jinan Shandong 250353 China
| | - Dehai Yu
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education); Qilu University of Technology; Jinan Shandong 250353 China
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23
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Gao Z, Huang Y, Zhao J, Yao X, Zhang K, Fang Y, Nishinari K, Phillips GO, Yang H. Edible Pickering emulsion stabilized by protein fibrils: Part 2. Effect of dipalmitoyl phosphatidylcholine (DPPC). Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2017.03.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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24
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Li G, Song Z, Liu W, Yu D, Wang H. Alkyl Ketene Dimer Emulsions Stabilized by Layered Double Hydroxide Particles Modified with Glutamic Acid. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02532] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Guodong Li
- Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology, Jinan, 250353, China
- Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Hangzhou, 310023 China
| | - Zhaoping Song
- Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology, Jinan, 250353, China
| | - Wenxia Liu
- Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology, Jinan, 250353, China
| | - Dehai Yu
- Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology, Jinan, 250353, China
| | - Huili Wang
- Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology, Jinan, 250353, China
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25
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Pir Cakmak F, Keating CD. Combining Catalytic Microparticles with Droplets Formed by Phase Coexistence: Adsorption and Activity of Natural Clays at the Aqueous/Aqueous Interface. Sci Rep 2017; 7:3215. [PMID: 28607355 PMCID: PMC5468296 DOI: 10.1038/s41598-017-03033-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 04/21/2017] [Indexed: 01/16/2023] Open
Abstract
Natural clay particles have been hypothesized as catalysts on the early Earth, potentially facilitating the formation of early organic (bio) molecules. Association of clay particles with droplets formed by liquid-liquid phase separation could provide a physical mechanism for compartmentalization of inorganic catalysts in primitive protocells. Here we explore the distribution of natural clay mineral particles in poly(ethylene glycol) (PEG)/dextran (Dx) aqueous two-phase systems (ATPS). We compared the three main types of natural clay: kaolinite, montmorillonite and illite, all of which are aluminosilicates of similar composition and surface charge. The three clay types differ in particle size, crystal structure, and their accumulation at the ATPS interface and ability to stabilize droplets against coalescence. Illite and kaolinite accumulated at the aqueous/aqueous interface, stabilizing droplets against coalescence but not preventing their eventual sedimentation due to the mass of adsorbed particles. The ability of each clay-containing ATPS to catalyze reaction of o-phenylenediamine with peroxide to form 2,3-diaminophenazone was evaluated. We observed modest rate increases for this reaction in the presence of clay-containing ATPS over clay in buffer alone, with illite outperforming the other clays. These findings are encouraging because they support the potential of combining catalytic mineral particles with aqueous microcompartments to form primitive microreactors.
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Affiliation(s)
- Fatma Pir Cakmak
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania, 16802, USA
| | - Christine D Keating
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania, 16802, USA.
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26
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Wang Z, Wang Y. Tuning Amphiphilicity of Particles for Controllable Pickering Emulsion. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E903. [PMID: 28774029 PMCID: PMC5457260 DOI: 10.3390/ma9110903] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 01/14/2023]
Abstract
Pickering emulsions with the use of particles as emulsifiers have been extensively used in scientific research and industrial production due to their edge in biocompatibility and stability compared with traditional emulsions. The control over Pickering emulsion stability and type plays a significant role in these applications. Among the present methods to build controllable Pickering emulsions, tuning the amphiphilicity of particles is comparatively effective and has attracted enormous attention. In this review, we highlight some recent advances in tuning the amphiphilicity of particles for controlling the stability and type of Pickering emulsions. The amphiphilicity of three types of particles including rigid particles, soft particles, and Janus particles are tailored by means of different mechanisms and discussed here in detail. The stabilization-destabilization interconversion and phase inversion of Pickering emulsions have been successfully achieved by changing the surface properties of these particles. This article provides a comprehensive review of controllable Pickering emulsions, which is expected to stimulate inspiration for designing and preparing novel Pickering emulsions, and ultimately directing the preparation of functional materials.
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Affiliation(s)
- Zhen Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Yapei Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
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27
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Chen X, Wang H, Liu W, Li G, Yu D, Song Z. A stable AKD-in-water emulsion: Stabilized by MSG-modified laponite nanoparticle. J DISPER SCI TECHNOL 2016. [DOI: 10.1080/01932691.2016.1219954] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Xueshuai Chen
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
| | - Huili Wang
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
| | - Wenxia Liu
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
| | - Guodong Li
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
| | - Dehai Yu
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
| | - Zhaoping Song
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
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28
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Gong B, Liu W, Zhang X, Wang H, Yu D, Li G, Song Z. Preparation of starch and laponite co-stabilized alkenyl succinic anhydride emulsions for paper sizing. J DISPER SCI TECHNOL 2016. [DOI: 10.1080/01932691.2016.1178586] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Bei Gong
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
| | - Wenxia Liu
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
| | - Xiuli Zhang
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
| | - Huili Wang
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
| | - Dehai Yu
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
| | - Guodong Li
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
| | - Zhaoping Song
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, China
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29
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Zhang X, Liu W, Gong B, Song Z, Yu D, Wang H, Li G. Comparison of alkenyl succinic anhydride emulsions stabilized by laponite modified with ethylamine, diethylamine and triethylamine. J DISPER SCI TECHNOL 2016. [DOI: 10.1080/01932691.2016.1169930] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Xiuli Zhang
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, Shandong, China
| | - Wenxia Liu
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, Shandong, China
| | - Bei Gong
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, Shandong, China
| | - Zhaoping Song
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, Shandong, China
| | - Dehai Yu
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, Shandong, China
| | - Huili Wang
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, Shandong, China
| | - Guodong Li
- Key Laboratory of Pulp & Paper Science and Technology (Ministry of Education), Qilu University of Technology, Jinan, Shandong, China
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30
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31
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Hu B, Zhao C, Jin X, Wang H, Xiong J, Tan J. Antagonistic effect in pickering emulsion stabilized by mixtures of hydroxyapatite nanoparticles and sodium oleate. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.08.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Tan H, Liu W, Gong B, Zhang W, Li H, Yu D, Wang H, Li G, Lucia LA. Unique Dual Functions for Carbon Dots in Emulsion Preparations: Costabilization and Fluorescence Probing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:9537-9545. [PMID: 26287510 DOI: 10.1021/acs.langmuir.5b02755] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Recently, carbon dots (CDs) have drawn much attention as evidenced by their incorporation into many branches of science and engineering. Herein, a further unique application is elucidated: CDs that are synthesized by the hydrothermal treatment of gelatin for a dual functionality as expressed in costabilization of particle-based emulsions and their concomitant role as fluorescent probes. CDs either with or without gelatin matrixes induce the aggregation of Laponite particles. The introduction of CDs thus enhanced the stability of Laponite-stabilized emulsions and promoted the formation of multiple emulsions and emulsions with fine and uniform droplets when the CD-to-Laponite mass ratio was less than 45% and exceeded 60%, respectively. However, CDs without gelatin matrixes show slightly higher efficiency than CDs within gelatin matrixes for the costabilization of emulsions. CDs also costabilized emulsions with Laponite to allow the distribution of Laponite particles to be traced and the emulsion profiled under UV.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Lucian A Lucia
- North Carolina State University , Departments of Chemistry and Forest Biomaterials, Raleigh, North Carolina 27695, United States
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33
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Tang J, Quinlan PJ, Tam KC. Stimuli-responsive Pickering emulsions: recent advances and potential applications. SOFT MATTER 2015; 11:3512-29. [PMID: 25864383 DOI: 10.1039/c5sm00247h] [Citation(s) in RCA: 364] [Impact Index Per Article: 40.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Pickering emulsions possess many advantages over traditional surfactant stabilized emulsions. For example, Pickering emulsions impart better stability against coalescence and, in many cases, are biologically compatible and environmentally friendly. These characteristics open the door for their use in a variety of industries spanning petroleum, food, biomedicine, pharmaceuticals, and cosmetics. Depending on the application, rapid, but controlled stabilization and destabilization of an emulsion may be necessary. As a result, Pickering emulsions with stimuli-responsive properties have, in recent years, received a considerable amounts of attention. This paper provides a concise and comprehensive review of Pickering emulsion systems that possess the ability to respond to an array of external triggers, including pH, temperature, CO2 concentration, light intensity, ionic strength, and magnetic field. Potential applications for which stimuli-responsive Pickering emulsion systems would be of particular value, such as emulsion polymerization, enhanced oil recovery, catalyst recovery, and cosmetics, are discussed.
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Affiliation(s)
- Juntao Tang
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
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34
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Piao SH, Kwon SH, Zhang WL, Choi HJ. Celebrating Soft Matter's 10th anniversary: stimuli-responsive Pickering emulsion polymerized smart fluids. SOFT MATTER 2015; 11:646-654. [PMID: 25515644 DOI: 10.1039/c4sm02393e] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The Pickering emulsion process is an important and interesting way of forming hybrid soft matter particles stabilized by solid particles as surfactants instead of the extensive use of conventionally available organic surfactant molecules. This Highlight briefly reviews stimuli-responsive polymer/inorganic hybrid materials fabricated by Pickering emulsion polymerization along with the rheological characteristics of their electrorheological and magnetorheological smart fluids under electric and magnetic fields, respectively.
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Affiliation(s)
- Shang Hao Piao
- Department of Polymer Science and Engineering, Inha University, Incheon, 402-751, Korea.
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35
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Hierarchically pores carbon-covered alumina/TiO2 catalysts from particle stabilized foams. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.07.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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36
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Lorentz R, Rahali Y, Issa S, Bensouda Y, Holtzinger G, Aoussat A, Pensé-Lhéritier AM. One-pot synthesis of sub-micron organosilicate particles for the formulation of Pickering emulsions. POWDER TECHNOL 2014. [DOI: 10.1016/j.powtec.2014.05.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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37
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ASA-in-water emulsions stabilized by laponite nanoparticles modified with tetramethylammonium chloride. Chem Eng Sci 2014. [DOI: 10.1016/j.ces.2014.06.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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38
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Zhang W, Liu W, Li H, Hubbe MA, Yu D, Li G, Wang H. Improving Stability and Sizing Performance of Alkenylsuccinic Anhydride (ASA) Emulsion by Using Melamine-Modified Laponite Particles as Emulsion Stabilizer. Ind Eng Chem Res 2014. [DOI: 10.1021/ie501381a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wei Zhang
- Shandong Provincial Key Laboratory of Fine Chemicals, Key Laboratory of Pulp & Paper Science and Technology (Qilu University of Technology), Ministry of Education, Jinan, Shandong 250353, China
| | - Wenxia Liu
- Shandong Provincial Key Laboratory of Fine Chemicals, Key Laboratory of Pulp & Paper Science and Technology (Qilu University of Technology), Ministry of Education, Jinan, Shandong 250353, China
| | - Haidong Li
- Shandong Provincial Key Laboratory of Fine Chemicals, Key Laboratory of Pulp & Paper Science and Technology (Qilu University of Technology), Ministry of Education, Jinan, Shandong 250353, China
| | - Martin A. Hubbe
- Department
of Forest Biomaterials, North Carolina State University, Raleigh, North Carolina 27695-8005, United States
| | - Dehai Yu
- Shandong Provincial Key Laboratory of Fine Chemicals, Key Laboratory of Pulp & Paper Science and Technology (Qilu University of Technology), Ministry of Education, Jinan, Shandong 250353, China
| | - Guodong Li
- Shandong Provincial Key Laboratory of Fine Chemicals, Key Laboratory of Pulp & Paper Science and Technology (Qilu University of Technology), Ministry of Education, Jinan, Shandong 250353, China
| | - Huili Wang
- Shandong Provincial Key Laboratory of Fine Chemicals, Key Laboratory of Pulp & Paper Science and Technology (Qilu University of Technology), Ministry of Education, Jinan, Shandong 250353, China
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39
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Dong J, Worthen AJ, Foster LM, Chen Y, Cornell KA, Bryant SL, Truskett TM, Bielawski CW, Johnston KP. Modified montmorillonite clay microparticles for stable oil-in-seawater emulsions. ACS APPLIED MATERIALS & INTERFACES 2014; 6:11502-11513. [PMID: 24932773 DOI: 10.1021/am502187t] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Environmentally benign clay particles are of great interest for the stabilization of Pickering emulsions. Dodecane-in-synthetic seawater (SSW) emulsions formed with montmorillonite (MMT) clay microparticles modified with bis(2-hydroxyethyl)oleylamine were stable against coalescence, even at clay concentrations down to 0.1% w/v. Remarkably, as little as 0.001% w/v surfactant lowered the hydrophilicity of the clay to a sufficient level for stabilization of oil-in-SSW emulsions. The favorable effect of SSW on droplet size reduction and emulsion stability enhancement is hypothesized to be due to reduced electrostatic repulsion between adsorbed clay particles and a consequent increase in the continuous phase (an aqueous clay suspension) viscosity. Water/oil (W/O) emulsions were inverted to O/W either by decreasing the mass ratio of surfactant-to-clay (transitional inversion) or by increasing the water volume fraction (catastrophic inversion). For both types of emulsions, coalescence was minimal and the sedimentation or creaming was highly correlated with the droplet size. For catastrophic inversions, the droplet size of the emulsions was smaller in the case of the preferred curvature. Suspensions of concentrated clay in oil dispersions in the presence of surfactant were stable against settling. The mass transfer pathways during emulsification of oil containing the clay particles were analyzed on the droplet size/stability phase diagrams to provide insight for the design of dispersant systems for remediating surface and subsurface oceanic oil spills.
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Affiliation(s)
- Jiannan Dong
- McKetta Department of Chemical Engineering, ‡Department of Chemistry and Biochemistry, and §Department of Petroleum and Geosystems Engineering, The University of Texas at Austin , Austin, Texas 78712-0231, United States
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Liu H, Gu X, Hu M, Hu Y, Wang C. Facile fabrication of nanocomposite microcapsules by combining layer-by-layer self-assembly and Pickering emulsion templating. RSC Adv 2014. [DOI: 10.1039/c4ra00089g] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Nanocomposite multilayer microcapsules are prepared by layer-by-layer self-assembly based on Pickering emulsions.
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Affiliation(s)
- Hao Liu
- Research Institute of Materials Science
- South China University of Technology
- Guangzhou 510640, China
| | - Xiaoyu Gu
- Research Institute of Materials Science
- South China University of Technology
- Guangzhou 510640, China
| | - Meng Hu
- Research Institute of Materials Science
- South China University of Technology
- Guangzhou 510640, China
| | - Yang Hu
- Research Institute of Materials Science
- South China University of Technology
- Guangzhou 510640, China
| | - Chaoyang Wang
- Research Institute of Materials Science
- South China University of Technology
- Guangzhou 510640, China
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Edge-modified amphiphilic Laponite nano-discs for stabilizing Pickering emulsions. J Colloid Interface Sci 2013; 410:27-32. [DOI: 10.1016/j.jcis.2013.07.060] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 05/31/2013] [Accepted: 07/25/2013] [Indexed: 11/18/2022]
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Li W, Zhao C, Tan J, Jiang J, Xu J, Sun D. Roles of methyl orange in preparation of emulsions stabilized by layered double hydroxide particles. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2012.12.058] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Using urea to improve stability, sizing performance and hydrolysis resistance of ASA emulsion stabilized by Laponite. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.01.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Li H, Liu W, Zhang W, Qian K, Wang H. Laponite and PAS costabilized ASA emulsion with high hydrolysis resistance and sizing efficiency. J Appl Polym Sci 2013. [DOI: 10.1002/app.39045] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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