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Tamura N, Hasunuma K, Saito T, Fujisawa S. Mechanical and Thermal Properties of Porous Nanocellulose/Polymer Composites: Influence of the Polymer Chemical Structure and Porosity. ACS OMEGA 2024; 9:19560-19565. [PMID: 38708218 PMCID: PMC11064045 DOI: 10.1021/acsomega.4c01206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 05/07/2024]
Abstract
The excellent emulsifying capacity of nanocellulose allows for the preparation of porous nanocellulose/polymer composites through the emulsion templating process. However, the effects of the polymer chemical structure and porosity on the material properties have not been extensively explored. Here, we discuss the effects of these two factors on the thermal and mechanical properties of the composites. Two types of porous nanocellulose/polymer composites were fabricated with styrene-divinylbenzene (poly(St-co-DVB)) or styrene-poly(ethylene glycol) dimethacrylate (poly(St-co-EGDMA)) copolymers as the polymer phases. The porosity of the composite was changed up to ∼50% v/v by varying the aqueous phase volume fraction in the original nanocellulose-stabilized w/o emulsions. As the porosity increased, the thermal conductivity of the composite decreased. The mechanical properties were strongly influenced by the polymer type; the nanocellulose/poly(St-co-DVB) composite showed stiff but brittle behavior, whereas the nanocellulose/poly(St-co-EGDMA) composite showed higher strength and toughness. In both types of composites, the nanocelluloses served as reinforcing agents, contributing to the improvement of the mechanical properties.
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Affiliation(s)
- Naoki Tamura
- Department of Biomaterial
Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Kota Hasunuma
- Department of Biomaterial
Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Tsuguyuki Saito
- Department of Biomaterial
Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Shuji Fujisawa
- Department of Biomaterial
Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
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2
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He X, Lu Q. A review of high internal phase Pickering emulsions: Stabilization, rheology, and 3D printing application. Adv Colloid Interface Sci 2024; 324:103086. [PMID: 38244533 DOI: 10.1016/j.cis.2024.103086] [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: 06/16/2023] [Revised: 10/25/2023] [Accepted: 01/05/2024] [Indexed: 01/22/2024]
Abstract
High internal phase Pickering emulsion (HIPPE) is renowned for its exceptionally high-volume fraction of internal phase, leading to flocculated yet deformed emulsion droplets and unique rheological behaviors such as shear-thinning property, viscoelasticity, and thixotropic recovery. Alongside the inherent features of regular emulsion systems, such as large interfacial area and well-mixture of two immiscible liquids, the HIPPEs have been emerging as building blocks to construct three-dimensional (3D) scaffolds with customized structures and programmable functions using an extrusion-based 3D printing technique, making 3D-printed HIPPE-based scaffolds attract widespread interest from various fields such as food science, biotechnology, environmental science, and energy transfer. Herein, the recent advances in preparing suitable HIPPEs as 3D printing inks for various applied fields are reviewed. This work begins with the stabilization mechanism of HIPPEs, followed by introducing the origin of their distinctive rheological behaviors and strategies to adjust the rheological behaviors to prepare more eligible HIPPEs as printing inks. Then, the compatibility between extrusion-based 3D printing and HIPPEs as building blocks was discussed, followed by a summary of the potential applications using 3D-printed HIPPE-based scaffolds. Finally, limitations and future perspectives on preparing HIPPE-based materials using extrusion-based 3D printing were presented.
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Affiliation(s)
- Xiao He
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, Canada
| | - Qingye Lu
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, Canada.
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3
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Wan C, Wu Y, Cheng Q, Yu X, Song Y, Guan C, Tan X, Huang C, Zhu J, Russell TP. Reversible Emulsions from Polyoxometalate-Polymer: A Robust Strategy to Cyclic Emulsion Catalysis and High-Internal-Phase Emulsion Materials. J Am Chem Soc 2023; 145:25431-25439. [PMID: 37955662 DOI: 10.1021/jacs.3c10005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Reversible Pickering emulsions, achieved by switchable, interfacially active colloidal particles, that enable on-demand emulsification/demulsification or phase inversion, hold substantial promise for biphasic catalysis, emulsion polymerization, cutting fluids, and crude oil pipeline transportation. However, particles with such a responsive behavior usually require complex chemical syntheses and surface modifications, limiting their extensive use. Herein, we report a simple route to generate emulsions that can be controlled and reversibly undergo phase inversion. The emulsions are prepared and stabilized by the interfacial assembly of polyoxometalate (POM)-polymer, where their electrostatic interaction at the interface is dynamic. The wettability of the POMs that dictates the emulsion type can be readily regulated by tuning the number of polymer chains bound to POMs, which, in turn, can be controlled by varying the concentrations of both components and the water/oil ratio. In addition, the number of polymer chains anchored to the POMs can be varied by controlling the number of negative charges on the POMs through an in situ redox reaction. As such, a reversible inversion of the emulsions can be triggered by switching between exposure to ultraviolet light and the introduction of oxygen. Combining the functions of POM itself, a cyclic interfacial catalysis system was realized. Inversion of the emulsion also affords a pathway to high-internal-phase emulsions. The diversity of the POMs, the polymers, and the responsive switching groups open numerous new, simple strategies for designing a wide range of responsive soft matter for cargo loading, controlled release, and delivery in biomedical and engineering applications without time-consuming particle syntheses.
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Affiliation(s)
- Chuchu Wan
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Yutian Wu
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Quanyong Cheng
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Xiang Yu
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Yuhang Song
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Chengshu Guan
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Xuemei Tan
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Caili Huang
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Jintao Zhu
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Thomas P Russell
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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Yin Z, Zhou Y, Liu X, Zhang S, Binks BP. Highly efficient and recyclable monolithic bioreactor for interfacial enzyme catalysis. J Colloid Interface Sci 2023; 648:308-316. [PMID: 37301155 DOI: 10.1016/j.jcis.2023.06.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 05/23/2023] [Accepted: 06/02/2023] [Indexed: 06/12/2023]
Abstract
HYPOTHESIS Biocatalysts are key to the realization of all bioconversions in nature. However, the difficulty of combining the biocatalyst and other chemicals in one system limits their application in artificial reaction systems. Although some effort, such as Pickering interfacial catalysis and enzyme-immobilized microchannel reactors, have addressed this challenge an effective method to combine chemical substrates and biocatalysts in a highly efficient and re-usable monolith system is still to be developed. EXPERIMENTS A repeated batch-type biphasic interfacial biocatalysis microreactor was developed using enzyme-loaded polymersomes in the void surface of porous monoliths. Polymersomes, loaded with Candida antarctica Lipase B (CALB), are fabricated by self-assembly of the copolymer PEO-b-P(St-co-TMI) and used to stabilize oil-in-water (o/w) Pickering emulsions as a template to prepare monoliths. By adding monomer and Tween 85 to the continuous phase, controllable open-cell monoliths are prepared to inlay CALB-loaded polymersomes in the pore walls. FINDINGS The microreactor is proven to be highly effective and recyclable when a substrate flows through it, which offers superior benefits of absolute separation to a pure product and no enzyme loss. The relative enzyme activity is constantly maintained above 93% in 15 cycles. The enzyme is constantly present in the microenvironment of the PBS buffer ensuring its immunity to inactivation and facilitating its recycling.
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Affiliation(s)
- Zhengqiao Yin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yiding Zhou
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiucai Liu
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Shengmiao Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Bernard P Binks
- Department of Chemistry, University of Hull, Hull HU6 7RX. UK.
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Kim D, Lee H, Yoon H, Oh D, Kim K. Stabilization of high internal phase Pickering emulsions with millimeter-scale droplets using silica particles. SOFT MATTER 2023; 19:3841-3848. [PMID: 37194380 DOI: 10.1039/d3sm00237c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
High internal phase emulsions stabilized with colloidal particles (Pickering HIPEs) have recently been studied intensively because of their great stability achieved by the irreversible adsorption of particles onto the oil-water interface and their usage as a template for synthesizing porous polymeric materials, called PolyHIPEs. In most cases, Pickering HIPEs with microscale droplets ranging from tens of micrometers to hundreds of micrometers have been successfully achieved, but the stabilization of Pickering HIPEs with millimeter-sized droplets is rarely reported. In this study, we report for the first time that, by using shape-anisotropic silica particle aggregates as a stabilizer, successful stabilization of Pickering HIPEs with millimeter-sized droplets can be achieved, and the size of droplets can be simply controlled. Additionally, we demonstrate that stable PolyHIPEs with large pores can be readily converted to PolyHIPEs with millimeter-scale pores, which have advantages in absorbent materials and biomedical engineering applications.
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Affiliation(s)
- DongGwon Kim
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology (SeoulTech), Seoul, 01811, Republic of Korea.
| | - HaNeur Lee
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology (SeoulTech), Seoul, 01811, Republic of Korea.
| | - Hojoon Yoon
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology (SeoulTech), Seoul, 01811, Republic of Korea.
| | - DongGeun Oh
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology (SeoulTech), Seoul, 01811, Republic of Korea.
| | - KyuHan Kim
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology (SeoulTech), Seoul, 01811, Republic of Korea.
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6
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Zhou Y, Zhu M, Sun Y, Zhu Y, Zhang S. Fabrication of Macroporous Polymers via Water-in-Water Emulsion-Templating Technique. ACS Macro Lett 2023; 12:302-307. [PMID: 36780492 DOI: 10.1021/acsmacrolett.2c00712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Emulsion-templated porous polymers have attracted broad attention due to their great application prospects in many fields. However, scaling up the emulsion-templated technique from the lab to industrial production remains a great challenge, especially for systems involving an oil-in-water (o/w) emulsion template that is used normally for preparing hydrophilic porous polymers. These systems require large amounts of organic solvents to be the internal phase (i.e., major phase) of the emulsion templates, which causes a significant environmental impact and cost. Herein, a water-in-water (w/w) emulsion-templated technique is presented to prepare porous hydrophilic polymers. The w/w emulsion is prepared by mixing a PEG aqueous solution and a dextran aqueous solution with cellulose nanocrystals (CNCs) as a stabilizer. With varying the mass ratio of dextran/PEG in the range of 1/2 to 8/1, a series of dextran-rich-phase-in-PEG-rich-phase (dextran/PEG) emulsions are obtained. Subsequently, monomers, such as acrylamide, acrylic acid, and/or 2-acrylamido-2-methylpropanesulfonic acid, are introduced to the emulsions to fabricate porous hydrophilic polymers. These polymers have an open-cell structure like those of o/w emulsion-templated polymers. The system developed herein is an environmentally friendly, low cost, and universal emulsion-templated method toward porous hydrophilic polymers, which avoids the defects caused by the presence of large amounts of organic solvents in an o/w emulsion-templating method and can be moved from the lab to industrial-scale production.
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Affiliation(s)
- Yiding Zhou
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Mengze Zhu
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yuanyuan Sun
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yun Zhu
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Shengmiao Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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7
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Yin X, Zhang T, Zhao T, Wang K, Xu Z, Zhao Y. Cellulose-based, flexible polyurethane polyHIPEs with quasi-closed-cell structures and high stability for thermal insulation. Carbohydr Polym 2023; 302:120385. [PMID: 36604063 DOI: 10.1016/j.carbpol.2022.120385] [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: 08/13/2022] [Revised: 10/25/2022] [Accepted: 11/18/2022] [Indexed: 11/27/2022]
Abstract
Cellulose-based, closed-cell porous materials templated from emulsions are promising for thermal insulation, but their low stability imposed by physical interaction hinders the materials from real applications. Herein, we report the fabrication of cellulose-based, flexible polyurethane polyHIPEs with quasi-closed-cell structures, high stability and flexibility for thermal insulation. The polyHIPEs were prepared from cellulose-stabilized Pickering high internal phase emulsions through interfacial crosslinking using isocyanate. The resulting polyurethane polyHIPEs showed controllable external shapes, quasi-closed-cell structures, high flexibility, low density, and robust compression (without fracture even after compression to 30 % original height). The crosslinking enabled the polyHIPEs to show hydrophobicity, good stability (without breakage and dissolution observed after immersing in NaOH solution at pH 12, HCl solution at pH 1 and hot water at 100 °C, for 24 h) and decreased moisture uptake (below 1 %). The low density and quasi-closed-cell structures endowed the polyHIPEs with high thermal insulation, with thermal conductivity as low as 33.1 mW/(m K). These features make the cellulose-based, closed-cell polyHIPEs as an excellent candidate for thermal insulting.
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Affiliation(s)
- Xuchu Yin
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Tao Zhang
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China; China National Textile and Apparel Council Key Laboratory of Natural Dyes, Soochow University, Suzhou 215123, China.
| | - Tongqing Zhao
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Ke Wang
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Zhiguang Xu
- China-Australia Institute for Advanced Materials and Manufacturing, Jiaxing University, Jiaxing 314001, China
| | - Yan Zhao
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China.
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Wan C, Cheng Q, Zeng M, Huang C. Recent progress in emulsion gels: from fundamentals to applications. SOFT MATTER 2023; 19:1282-1292. [PMID: 36744514 DOI: 10.1039/d2sm01481e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Emulsion gels, also known as gelled emulsions or emulgels, have garnered great attention both in fundamental research and practical applications due to their superior stability, tunable morphology and microstructure, and promising mechanical and functional properties. From an application perspective, attention in this area has been, historically, mainly focused on food industries, e.g., engineering emulsion gels as fat substitutes or delivery systems for bioactive food ingredients. However, a growing body of studies has, in recent years, begun to demonstrate the full potential of emulsion gels as soft templates for designing advanced functional materials widely applied in a variety of fields, spanning chemical engineering, pharmaceutics, and materials science. Herein, a concise and comprehensive overview of emulsion gels is presented, from fundamentals to applications, highlighting significant recent progress and open questions, to scout for and deepen their potential applications in more fields.
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Affiliation(s)
- Chuchu Wan
- Key Lab of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China.
| | - Quanyong Cheng
- Key Lab of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China.
| | - Min Zeng
- Key Lab of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China.
| | - Caili Huang
- Key Lab of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China.
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9
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Song Y, Zhou L, Zhang D, Wei Y, Jiang S, Chen Y, Ye J, Shao X. Stability and release of peach polyphenols encapsulated by Pickering high internal phase emulsions in vitro and in vivo. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2023.108593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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10
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Guo L, Deng ZA, Meng YC, Chen J, Fang S, Pan Y, Chen J. Fluid laminarization process and rheological properties of protein-stabilized high internal phase emulsions. J FOOD ENG 2022. [DOI: 10.1016/j.jfoodeng.2022.111400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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11
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One-pot approach to fabrication of porous polymers from Pickering emulsion templates. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Jiang H, Hu X, Jiang W, Guan X, Li Y, Ngai T. Water-in-Oil Pickering Emulsions Stabilized by Hydrophobized Protein Microspheres. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:12273-12280. [PMID: 36172706 DOI: 10.1021/acs.langmuir.2c01904] [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
Water-in-oil (w/o) Pickering emulsions have gained considerable attention in colloid science and daily applications. However, for the formation of w/o emulsions, especially those with high internal water content, the particulate stabilizers are required to be sufficiently hydrophobic, and synthetic or chemically modified particles have been mostly reported until now, which are not biocompatible and sustainable. We present a zein protein-based microsphere derived from the Pickering emulsion template, in which protein microspheres are feasibly in situ hydrophobized by silica nanoparticles, enabling the stabilization of w/o Pickering emulsions. The effects of microsphere concentration, water/oil volume ratio, oil types, and pH on the stabilization of prepared w/o emulsions are systematically studied, revealing prominent characteristics of the controllable size, high water fraction, universal adaptation of oils, as well as broad pH stability. As a demonstration, the Pickering emulsion effectively encapsulates vitamin C and shows high stability for long storage duration against ultraviolet radiation/heat. Therefore, this novel proteinaceous particle-stabilized w/o Pickering emulsion has great potential in the delivery and protection of water-soluble bioactive substrates.
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Affiliation(s)
- Hang Jiang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Xiaofeng Hu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Weijie Jiang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Xin Guan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N. T, Hong Kong 00852, P. R. China
| | - Yunxing Li
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - To Ngai
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N. T, Hong Kong 00852, P. R. China
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13
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Zhang Y, Luo P, Liu Y, Li H, Li X, Lu H, Wu Y, Liu D. pH-Induced reversible conversion between non-Pickering and Pickering high internal phase emulsion. Phys Chem Chem Phys 2022; 24:17121-17130. [PMID: 35791919 DOI: 10.1039/d2cp01747d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solid-stabilized high internal phase emulsions have received extensive attention. Many previous studies have confirmed that solid emulsifiers in high internal phase Pickering emulsions (HIPPEs) provide a great interface mechanical barrier. With the development of research, novel solid-stabilized emulsions have emerged. These emulsions are stabilized by the electrostatic repulsion between the surfactants and hydrophilic solid particles. They are distinct from Pickering emulsions in that the solid particles do not exist at the oil-water interface, but are dispersed in the continuous phase, so it is called a non-Pickering emulsion. However, high internal phase non-Pickering emulsions (HIPNPEs) are rarely reported. Herein, HIPNPEs that are synergistically stabilized by anionic surfactants with dynamic covalent bonds and negatively charged nano-SiO2 particles were prepared. In the presence of dodecylamine, the acidity causes the dynamic covalent bonds to break and the surfactant to be inactivated. Additionally, the long-chain amine is protonated and adsorbed on nano-SiO2 particles to form a new surfactant for stabilizing HIPPEs. However, alkalinity causes the HIPNPEs to form again. In addition, rheological tests confirmed that the HIPNPEs and HIPPEs had similar rheological behaviors, which were typical gel-like fluids. The emulsion can quickly respond to realize the conversion between the different types of high internal phase emulsion by simple stimulation, which provides a new direction for stimulus-responsive high internal phase emulsions.
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Affiliation(s)
- Ying Zhang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China.
| | - Pan Luo
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, P. R. China.
| | - Ya Liu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China.
| | - Hanmin Li
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China.
| | - Xiaojiang Li
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China.
| | - Hongsheng Lu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China.
| | - Yuanpeng Wu
- School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, P. R. China.
| | - Dongfang Liu
- College of Science, Xihua University, Chengdu 610039, P. R. China.
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14
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Emulsion-based, flexible and recyclable aerogel composites for latent heat storage. J Colloid Interface Sci 2022; 627:72-80. [PMID: 35841710 DOI: 10.1016/j.jcis.2022.07.035] [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: 05/07/2022] [Revised: 06/29/2022] [Accepted: 07/05/2022] [Indexed: 11/20/2022]
Abstract
Although emulsion-based, phase change material-encapsulated monolithic composites are promising for latent heat storage, their rigidity and non-recyclability imposed by the relatively dense covalent crosslinking hinder the composites from real applications. Herein, we report the fabrication of aerogel composites with flexibility and recyclability from cellulose nanocrystal-stabilized, octadecane-encapsulated Pickering emulsions solidified using physical gelation. The resulting monolithic composites exhibited controllable external shapes, and the introduction of poly(vinyl alcohol) significantly reduced the leakage of the encapsulated octadecane. The aerogel composites showed flexibility at temperature over 30 °C, and robust compressive behavior, without fracture at 70% compressive strain. The composites possessed similar heat storage (melting) temperature and heat release (crystallization) temperature to that of bulk octadecane, high heat capacity (up to 253 J.g-1) and high reusability, without obvious deterioration in heat capacity after 100 heating-cooling cycles. Moreover, the aerogel composites exhibited recyclability, simply by dissolving the composites in hot water to form emulsions and then by freeze drying to form aerogel composites. The flexibility and recyclability, together with robust compression, controllable external shapes, high heat capacity and good reusability, make the aerogel composites to be excellent candidates for latent heat storage.
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15
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Sato T, Murakami Y. Temperature-Responsive Polysaccharide Microparticles Containing Nanoparticles: Release of Multiple Cationic/Anionic Compounds. MATERIALS 2022; 15:ma15134717. [PMID: 35806841 PMCID: PMC9268494 DOI: 10.3390/ma15134717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 02/01/2023]
Abstract
Most drug carriers used in pulmonary administration are microparticles with diameters over 1 µm. Only a few examples involving nanoparticles have been reported because such small particles are readily exhaled. Consequently, the development of microparticles capable of encapsulating nanoparticles and a wide range of compounds for pulmonary drug-delivery applications is an important objective. In this study, we investigated the development of polysaccharide microparticles containing nanoparticles for the temperature-responsive and two-step release of inclusions. The prepared microparticles containing nanoparticles can release two differently charged compounds in a stepwise manner. The particles have two different drug release pathways: one is the release of nanoparticle inclusions from the nanoparticles and the other is the release of microparticle inclusions during microparticle collapse. The nanoparticles can be efficiently delivered deep into the lungs and a wide range of compounds are released in a charge-independent manner, owing to the suitable roughness of the microparticle surface. These polysaccharide microparticles containing nanoparticles are expected to be used as temperature-responsive drug carriers, not only for pulmonary administration but also for various administration routes, including transpulmonary, intramuscular, and transdermal routes, that can release multiple drugs in a controlled manner.
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16
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Fonseca J, Gong T. Fabrication of metal-organic framework architectures with macroscopic size: A review. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214520] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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17
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Jiang X, Pan H, Ruan G, Hu H, Huang Y, Chen Z. Wettability tunable metal organic framework functionalized high internal phase emulsion porous monoliths for fast solid-phase extraction and sensitive analysis of hydrophilic heterocyclic amines. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128565. [PMID: 35359099 DOI: 10.1016/j.jhazmat.2022.128565] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 02/09/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
Surface wettability greatly influences the adsorptive, catalytic, and diffuse performances of a porous material. To realize the improved adsorption performance to hydrophilic heterocyclic amines (HAs), polymeric high internal phase emulsions (polyHIPEs) that can be tuned from hydrophobic to hydrophilic is synthesized by facilely regulating the amount of metal organic frameworks (MOFs). The water contact angle of the MOFs and polyHIPEs hybrids (MOFs@polyHIPEs) decreases from 133° to 0° as the amount of amide-modified MOFs increases from 0% to 10%. The hydrophilization of divinybenzene (DVB) based polyHIPEs by MOFs hybridization significantly enhances their adsorption performance and enables them to be suitable for the solid phase extraction (SPE) of hydrophilic HAs. Under the optimized conditions, the MOFs@polyHIPEs achieve adsorption capacities ranging from 42.89 to 86.71 µg/g for HAs through the π-π interaction and hydrogen bonding. The adsorption follows the pseudo-second-order kinetic model, and the nitrogen atoms in/on the imidazole ring are identified as the active adsorption sites for hydrogen bonding. This SPE method, along with HPLC-MS detection, provides detection limits of HAs as low as 0.00020-0.00040 ng/mL. This work offers a feasible strategy in tuning the surface wettability of polyHIPEs without post-modification to achieve high-efficiency enrichment and analysis of HAs.
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Affiliation(s)
- Xiangqiong Jiang
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi 541004, China
| | - Hong Pan
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi 541004, China
| | - Guihua Ruan
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi 541004, China.
| | - Haoyun Hu
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi 541004, China
| | - Yipeng Huang
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi 541004, China.
| | - Zhengyi Chen
- Pharmacy School, Guilin Medical University, Guangxi 541004, China
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18
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Guan X, Sheng Y, Jiang H, Binks BP, Ngai T. Water-in-oil high internal phase Pickering emulsions formed by spontaneous interfacial hydrolysis of monomer oil. J Colloid Interface Sci 2022; 623:476-486. [PMID: 35597017 DOI: 10.1016/j.jcis.2022.05.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 03/07/2022] [Accepted: 05/02/2022] [Indexed: 10/18/2022]
Abstract
HYPOTHESIS Alcohols can strongly reduce the interfacial tension between immiscible liquids, thus facilitating the formation of emulsions. By combining non-surface-active hydrophobic particles with medium-chain alcohols, stable water-in-oil (w/o) high internal phase Pickering emulsions (HIPPEs) can be easily prepared without high-energy emulsification methods. EXPERIMENTS The emulsions containing acrylate monomer as the oil phase were prepared at different pH values in the presence of hydrophobic silica particles. Further, by replacing monomer oil with organic solvents (e.g., toluene) and a certain concentration of alcohol, the promoted particle adsorption at the oil-water interface has been systematically investigated. The morphology and interfacial structure of HIPPEs were visualized by confocal laser scanning microscopy (CLSM). FINDING At high pH, stable water-in-acrylate monomer HIPPEs can be formed using commercial fumed silica nanoparticles alone with simple stirring or vortexing. The hydrolysis of the acrylate group at high pH can generate alcohols in situ which adsorb at the oil-water interface to reduce the interfacial tension and promote particle adsorption to hinder droplet coalescence. The novel strategy for forming stable and processable HIPPEs can be universally applied to different hydrophobic silica particles with the help of various alcohols as the co-stabilizer, which provides a flexible approach for the fabrication of lightweight, closed-cell solid foams for a range of applications.
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Affiliation(s)
- Xin Guan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Yifeng Sheng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Hang Jiang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Bernard P Binks
- Department of Chemistry, University of Hull, HU6 7RX, United Kingdom.
| | - To Ngai
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong.
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19
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Fresco-Cala B, Cárdenas S. Advanced polymeric solids containing nano- and micro-particles prepared via emulsion-based polymerization approaches. A review. Anal Chim Acta 2022; 1208:339669. [DOI: 10.1016/j.aca.2022.339669] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/26/2022] [Accepted: 02/28/2022] [Indexed: 12/11/2022]
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20
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Leng X, Cheng S, Wu H, Nian Y, Zeng X, Hu B. High Internal Phase Emulsions Stabilized with Polyphenol-Amyloid Fibril Supramolecules for Encapsulation and Protection of Lutein. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:2328-2338. [PMID: 35133823 DOI: 10.1021/acs.jafc.1c04615] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
High internal phase emulsions (HIPEs), also called highly concentrated emulsions with a minimal internal phase volume fraction of 74%, have been paid increasing attention in the development of functional foods due to their high potential in loading with large amounts of hydrophobic nutriceuticals. In the present study, HIPEs stabilized by polyphenol-amyloid supramolecular filaments were prepared for encapsulation of olive oil and loading with lutein. Binding and stacking of the green tea polyphenol epigallocatechin gallate (EGCG) on the surface of amyloid fibrils fabricated from hen egg lysozyme resulted in the hybrid supramolecules, which assembled to form hydrogels. The amyloid fibril clusters shrouded by EGCG were observed in the microstructure of the hydrogels characterized by atomic force microscopy (AFM). HIPEs stabilized by the EGCG-amyloid fibril supramolecules showed the typical microstructure of highly packed polyhedral geometric oil droplets. The gel strength of the HIPEs stabilized by the hybrid supramolecules was greater than that of HIPEs stabilized by pure amyloid fibrils. The droplet size of the HIPEs first decreased and then increased with the increase of EGCG contents in the hybrid supramolecules, which was consistent with the corresponding emulsion morphologies obtained from the images of confocal laser scanning microscopy (CLSM). Aggregation of the protein-based nanofibrils appeared in the continuous phase at higher EGCG contents. The droplet size of the HIPEs decreased with the increase of the amyloid fibril concentration, accompanied by more packed and homogenously dispersed lipid droplets, as shown in the CLSM images. A high loading content of lutein of up to 10 mg/mL in the prepared HIPEs was realized, and the stability of lutein against ultraviolet irradiation, heat, iron, and hydrogen peroxide was promoted significantly. In addition, encapsulation with the HIPEs prevented the oxidization of olive oil, and this effect was enhanced with the increase of the EGCG content in the hybrid supramolecules ranging from 0 to 0.25 wt %. The protection function of the HIPEs might be ascribed to the membrane of interfacial amyloid fibrils and the crowded oil droplet environment, both of which could shield the pro-oxidation factors.
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Affiliation(s)
- Xue Leng
- College of Food Science and Technology, Nanjing Agricultural University, 1 Weigang, Nanjing, Jiangsu 210095, P. R. China
| | - Siying Cheng
- College of Food Science and Technology, Nanjing Agricultural University, 1 Weigang, Nanjing, Jiangsu 210095, P. R. China
| | - Huaqian Wu
- College of Food Science and Technology, Nanjing Agricultural University, 1 Weigang, Nanjing, Jiangsu 210095, P. R. China
| | - Yingqun Nian
- College of Food Science and Technology, Nanjing Agricultural University, 1 Weigang, Nanjing, Jiangsu 210095, P. R. China
| | - Xiaoxiong Zeng
- College of Food Science and Technology, Nanjing Agricultural University, 1 Weigang, Nanjing, Jiangsu 210095, P. R. China
| | - Bing Hu
- College of Food Science and Technology, Nanjing Agricultural University, 1 Weigang, Nanjing, Jiangsu 210095, P. R. China
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21
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22
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Huang C, Sun F, Ma X, Gao C, Yang N, Nishinari K. Hydrophobically modified chitosan microgels stabilize high internal phase emulsions with high compliance. Carbohydr Polym 2022; 288:119277. [DOI: 10.1016/j.carbpol.2022.119277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 01/16/2022] [Accepted: 02/18/2022] [Indexed: 11/02/2022]
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23
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Xu M, Ma L, Li Q, Wu J, Wan Z, Ngai T, Yang X. Robust and highly adaptable high internal phase gel emulsions stabilized solely by a natural saponin hydrogelator glycyrrhizic acid. Food Funct 2022; 13:280-289. [PMID: 34889340 DOI: 10.1039/d1fo01656c] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report a new class of high internal phase gel emulsions (gel-HIPEs) that are mechanically robust, adaptable, and processable. They can be synthesized facilely by using the natural food-grade saponin glycyrrhizic acid (GA) as the sole stabilizer, which is shown to be versatile for various oils. The structural properties of these HIPEs including appearance, viscoelasticity and processability are well controlled by simply changing the concentration of GA nanofibrils. When the GA nanofibril concentration exceeds 0.3 wt%, the unique gel-HIPEs can be produced through the formation of fibrillar hydrogel networks in the continuous phase. When the nanofibril concentration only increases to 5 wt%, it is surprising to see that these gel-HIPEs display an extremely high mechanical strength, and the storage moduli as well as the yield stress values can reach 408.5 kPa and 3340 Pa (or even more), respectively. We conjecture that such remarkable mechanical performance is mainly attributed to the highly viscoelastic GA nanofibrillar networks in the continuous phase of gel-HIPEs, which can actively trap the nanofibril-coated emulsion droplets and thus strengthen the gel matrix. Consequently, the robust gel-HIPEs can be used as a solid template to fabricate stable porous materials without the need for crosslinking of the continuous phase, and the open- and closed-cell foam microstructures are controlled by the nanofibril concentration. Furthermore, the nanofibril-based HIPEs are promising long-term delivery vehicles with controlled-release properties for lipophilic active cargoes, since the strong fibrillar networks at the droplet surfaces and in the continuous phase can effectively retard the active release.
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Affiliation(s)
- Mengyue Xu
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
| | - Lulu Ma
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
| | - Qing Li
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
| | - Jiahao Wu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China.
| | - Zhili Wan
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China.,Department of Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China. .,Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510640, China
| | - To Ngai
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China.
| | - Xiaoquan Yang
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
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24
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Zhang T, Cao H, Gui H, Xu Z, Zhao Y. Microphase-separated, magnetic macroporous polymers with amphiphilic swelling from emulsion templating. Polym Chem 2022. [DOI: 10.1039/d1py01584b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PolyHIPEs are promising for various applications associated with liquid uptakes. PolyHIPEs from a reactive, monomeric block copolymer can exhibit amphiphilic swelling, but such swelling usually tends to disappear upon copolymerization...
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25
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Chae J, Choi SQ, Kim K. The role of excess attractive particles in the elasticity of high internal phase Pickering emulsions. SOFT MATTER 2021; 18:53-61. [PMID: 34843612 DOI: 10.1039/d1sm01338f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A high internal phase emulsion (HIPE), which has a volume fraction of dispersed phase of over 74%, shows a solid-like property because of concentrated polyhedral droplets. Although many studies have proposed theoretical and empirical models to explain the rheological properties of HIPEs, most of them are only limited to the emulsions stabilized by surfactants. In the case of high internal phase Pickering emulsions (HIPPEs), much greater values of elastic modulus have been reported, compared to those of surfactant-stabilized HIPEs, but so far, there have been no clear explanations for this. In this study, we investigate how colloidal particles attribute to the significantly high elasticity of HIPPEs, specifically considering two different contributions, namely, interfacial rheological properties and bulk rheological properties. Our results reveal that the flocculated structures of colloidal particles that possess a significant elasticity can be interconnected between dispersed droplets. Furthermore, this elastic structure is a crucial factor in the high elasticity of HIPPEs, which is also supported by a simple theoretical model.
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Affiliation(s)
- Junsu Chae
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon, 34141, Korea.
| | - Siyoung Q Choi
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon, 34141, Korea.
| | - KyuHan Kim
- Department of Chemical and Biomolecular Engineering, SeoulTech, Seoul, 01811, Korea.
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26
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Cao Y, Dai Y, Lu X, Li R, Zhou W, Li J, Zheng B. Formation of Shelf-Stable Pickering High Internal Phase Emulsion Stabilized by Sipunculus nudus Water-Soluble Proteins (WSPs). Front Nutr 2021; 8:770218. [PMID: 34888338 PMCID: PMC8650626 DOI: 10.3389/fnut.2021.770218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 10/20/2021] [Indexed: 12/30/2022] Open
Abstract
To form a stable emulsion system, the water-soluble proteins (WSPs) of Sipunculus nudus were prepared as the sole effective stabilizer for the high internal phase emulsion (HIPEs), of which the influence of the WSPs concentration and environmental stability was investigated. The HIPEs were fabricated using a simple one-pot homogenization process (10,000 rpm/min, 3 min) that involved blending the WSPs (0.1, 1, 2, 3, 4, and 5 wt%) with soybean oil (60, 65, 70, 75, 80, 85, and 90%). The microstructure and properties of stable HIPEs were characterized by particle size, ζ-potential, visual observations, optical microscopy, and dynamic rheology property measurements. As the concentration of WSPs increases, the mean particle diameter of HIPEs decreases, on the contrary, the apparent viscosity and storage modulus gradually increase. At a given emulsifier concentration (3 wt%), the stable and gel-like HIPEs were formed at the oil internal phase (ϕ) values of 70–75%, all the pH range in values from 3 to 9, and the ionic strength from 100 to 500 mM. Furthermore, the HIPEs that were stabilized formed a gel-like state that was relatively stable to heat and storage (30 days). And there was a new phenomenon that the destabilized HIPE of the freeze-thaw treatments could still return to a gel-like state again after homogenizing. The study results suggest that the WSPs of S. nudus as a natural emulsifier could be widely used in the food industry.
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Affiliation(s)
- Yupo Cao
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China.,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yaping Dai
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China.,Hainan Key Laboratory of Storage and Processing of Fruits and Vegetables, Zhanjiang, China
| | - Xuli Lu
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China.,Hainan Key Laboratory of Storage and Processing of Fruits and Vegetables, Zhanjiang, China
| | - Ruyi Li
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China.,Hainan Key Laboratory of Storage and Processing of Fruits and Vegetables, Zhanjiang, China
| | - Wei Zhou
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China.,Hainan Key Laboratory of Storage and Processing of Fruits and Vegetables, Zhanjiang, China
| | - Jihua Li
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China.,Hainan Key Laboratory of Storage and Processing of Fruits and Vegetables, Zhanjiang, China
| | - Baodong Zheng
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
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27
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Rigg A, Champagne P, Cunningham MF. Polysaccharide-Based Nanoparticles as Pickering Emulsifiers in Emulsion Formulations and Heterogenous Polymerization Systems. Macromol Rapid Commun 2021; 43:e2100493. [PMID: 34841604 DOI: 10.1002/marc.202100493] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/27/2021] [Indexed: 12/20/2022]
Abstract
Bio-based Pickering emulsifiers are a nontoxic alternative to surfactants in emulsion formulations and heterogenous polymerizations. Recent demand for biocompatible and sustainable formulations has accelerated academic interest in polysaccharide-based nanoparticles as Pickering emulsifiers. Despite the environmental advantages, the inherent hydrophilicity of polysaccharides and their nanoparticles limits efficiency and application range. Modification of the polysaccharide surface is often required in the development of ultrastable, functional, and water-in-oil (W/O) systems. Complex surface modification calls into question the sustainability of polysaccharide-based nanoparticles and is identified as a significant barrier to commercialization. This review summarizes the use of nanocelluloses, -starches, and -chitins as Pickering emulsifiers, highlights trends and best practices in surface modification, and provides recommendations to expedite commercialization.
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Affiliation(s)
- Amanda Rigg
- Department of Chemical Engineering, 19 Division Street, Queen's University, Kingston, ON, K7L 3N6, Canada
| | - Pascale Champagne
- Beaty Water Research Centre, Department of Civil Engineering, Union Street, Queen's University, Kingston, ON, K7L 3N6, Canada.,Institut National de la Recherche Scientifique (INRS), 490 rue de la Couronne, Quebec City, Quebec, G1K 9A9, Canada
| | - Michael F Cunningham
- Department of Chemical Engineering, 19 Division Street, Queen's University, Kingston, ON, K7L 3N6, Canada.,Department of Chemistry, 90 Bader Lane, Queen's University, Kingston, ON, K7L 3N6, Canada
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28
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Ma P, Zhang J, Teng Z, Zhang Y, Bauchan GR, Luo Y, Liu D, Wang Q. Metal-Organic Framework-Stabilized High Internal Phase Pickering Emulsions Based on Computer Simulation for Curcumin Encapsulation: Comprehensive Characterization and Stability Mechanism. ACS OMEGA 2021; 6:26556-26565. [PMID: 34661010 PMCID: PMC8515605 DOI: 10.1021/acsomega.1c03932] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 09/15/2021] [Indexed: 06/13/2023]
Abstract
High internal phase Pickering emulsions (HIPPEs) have taken a center stage in the arena of delivery systems in the food industry because of their high loading capacity and stability. In addition, metal-organic frameworks (MOFs), a type of cutting-edge designable porous scaffolding material, have attracted attention in reticular chemistry, which satisfies fundamental demands for delivery research in the past years. Here, we demonstrate a novel metal-organic framework (MOF)-stabilized HIPPE delivery system for hydrophobic phytochemicals. First, a novel high-biocompatibility and stable MOF particle, UiO-66-NH2, was selected from atomic simulation screening, which showed proper electronegativity and amphiphilic properties to develop the HIPPE system. Monodispersed UiO-66-NH2 nanoparticles with the particle size of 161.36 nm were then prepared via solvothermal synthesization. Pickering emulsions with inner phase ratios from 50 to 80% with varied contents of polyethylene glycol (PEG) were prepared by in situ high-pressure homogenization, and their physicochemical properties including crystallography, morphology, and rheology were systematically characterized. Subsequently, curcumin, a model antioxidant, was loaded in the HIPPE system and named cur@UiO-66-NH2/HIPPE. It exhibited high loading capacity, up to 6.93 ± 0.41%, and encapsulation efficiency (19.76 ± 3.84%). This novel MOF nanoparticle-stabilized HIPPE delivery system could be practically utilized for other bioactive components and antimicrobial agents, which would find applications in food safety and biomedical areas in the future.
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Affiliation(s)
- Peihua Ma
- Department
of Nutrition and Food Science, College of Agriculture and Natural
Resources, University of Maryland, College Park, Maryland 20742, United States
| | - Jinglin Zhang
- Department
of Nutrition and Food Science, College of Agriculture and Natural
Resources, University of Maryland, College Park, Maryland 20742, United States
| | - Zi Teng
- Department
of Nutrition and Food Science, College of Agriculture and Natural
Resources, University of Maryland, College Park, Maryland 20742, United States
- Agricultural
Research Service, Beltsville Agricultural Research Center, Food Quality
Laboratory, U.S. Department of Agriculture, Beltsville, Maryland 20705, United States
| | - Yuan Zhang
- Department
of Chemistry and Biochemistry, College of Computer, Mathematical and
Natural Science, University of Maryland, College Park, Maryland 20742, United States
| | - Gary R. Bauchan
- Agricultural
Research Service, Soybean Genomics and Improvement Laboratory, Electron
and Confocal Microscopy Unit, U.S. Department
of Agriculture, Beltsville, Maryland 20705, United States
| | - Yaguang Luo
- Agricultural
Research Service, Beltsville Agricultural Research Center, Food Quality
Laboratory, U.S. Department of Agriculture, Beltsville, Maryland 20705, United States
| | - Dongxia Liu
- Department
of Chemistry and Biochemistry, College of Computer, Mathematical and
Natural Science, University of Maryland, College Park, Maryland 20742, United States
| | - Qin Wang
- Department
of Nutrition and Food Science, College of Agriculture and Natural
Resources, University of Maryland, College Park, Maryland 20742, United States
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29
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Li T, Xie R, Chen W, Schofield AB, Clegg PS. Complex High-Internal Phase Emulsions that can Form Interfacial Films with Tunable Morphologies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:9802-9808. [PMID: 34342454 DOI: 10.1021/acs.langmuir.1c01355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
High-internal phase emulsions (HIPEs) were considered as an important functional material and have been the focus of intense development effort, but their fundamental attributes have hardly been altered at either the microcosmic or macroscopic level, which severely limits their practical applications in various areas. In this work, we report a general strategy for creating complex HIPEs that can form interfacial films at liquid interfaces. Double HIPEs and Janus HIPEs are both realized for the first time. They feature complex microscopic patterns with short-range anisotropy and exhibit non-Newtonian pseudoplastic flow behavior. By taking advantage of their response to a high-pH subphase, interfacial films can be successfully obtained, which are tunable in thickness and morphologies under compression. Complex HIPEs can greatly expand the applications of liquid materials, and the interfacial films of droplets represent an important step toward producing 2D soft materials with a unique functionality that can be broadly applied to biological processes.
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Affiliation(s)
- Tao Li
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325001, P. R. China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang 325001, China
- Beijing National Laboratory for Condensed Matter Physics and Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Ruipei Xie
- Beijing National Laboratory for Condensed Matter Physics and Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Wei Chen
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325001, P. R. China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang 325001, China
| | - Andrew B Schofield
- School of Physics and Astronomy, University of Edinburgh, James Clerk Maxwell Building, Peter Guthrie Tait Road, Edinburgh EH9 3FD, U.K
| | - Paul S Clegg
- School of Physics and Astronomy, University of Edinburgh, James Clerk Maxwell Building, Peter Guthrie Tait Road, Edinburgh EH9 3FD, U.K
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30
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Wu B, Yang C, Xin Q, Kong L, Eggersdorfer M, Ruan J, Zhao P, Shan J, Liu K, Chen D, Weitz DA, Gao X. Attractive Pickering Emulsion Gels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2102362. [PMID: 34242431 DOI: 10.1002/adma.202102362] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/01/2021] [Indexed: 06/13/2023]
Abstract
Properties of emulsions highly depend on the interdroplet interactions and, thus, engineering interdroplet interactions at molecular scale are essential to achieve desired emulsion systems. Here, attractive Pickering emulsion gels (APEGs) are designed and prepared by bridging neighboring particle-stabilized droplets via telechelic polymers. In the APEGs, each telechelic molecule with two amino end groups can simultaneously bind to two carboxyl functionalized nanoparticles in two neighboring droplets, forming a bridged network. The APEG systems show typical shear-thinning behaviors and their viscoelastic properties are tunable by temperature, pH, and molecular weight of the telechelic polymers, making them ideal for direct 3D printing. The APEGs can be photopolymerized to prepare APEG-templated porous materials and their microstructures can be tailored to optimize their performances, making the APEG systems promising for a wide range of applications.
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Affiliation(s)
- Baiheng Wu
- Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, P. R. China
- College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Chenjing Yang
- College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Qi Xin
- College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Linlin Kong
- College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Max Eggersdorfer
- Independent Researcher, Zürich, 8092, Switzerland
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
| | - Jian Ruan
- Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, P. R. China
| | - Peng Zhao
- Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, P. R. China
| | - Jianzhen Shan
- Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, P. R. China
| | - Kai Liu
- Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Dong Chen
- Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, P. R. China
- College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - David A Weitz
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
| | - Xiang Gao
- College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
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31
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Gao H, Ma L, Cheng C, Liu J, Liang R, Zou L, Liu W, McClements DJ. Review of recent advances in the preparation, properties, and applications of high internal phase emulsions. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.03.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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32
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Chen Q, Tai X, Li J, Li C, Guo L. High Internal Phase Emulsions Synergistically Stabilized by Sodium Carboxymethyl Cellulose and Palm Kernel Oil Ethoxylates as an Essential Oil Delivery System. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:4191-4203. [PMID: 33787238 DOI: 10.1021/acs.jafc.0c07606] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
High internal phase emulsions (HIPEs) with an internal phase fraction of 84 vol % were prepared using carboxymethyl cellulose (CMC) and palm kernel oil ethoxylates (SOE-N-60) as a dual emulsifier. Effects of the oil-phase volume fraction, CMC concentration, and SOE-N-60 concentration on oil-in-water HIPEs stability were systematically studied by a Mastersizer 2000 instrument, Lx POL polarizing microscope, rheometer, etc. The bioavailability of tea tree oil can be effectively protected using HIPEs as a delivery system. The experimental results showed that, with the increase of the concentrations of CMC and SOE-N-60, the droplet size of HIPEs gradually decreases and the HIPEs showed good static stability. In addition, it was observed by scanning electron microscopy that the polyHIPEs materials using HIPEs stabilized by different SOE-N-60 and CMC concentrations as templates had different structures. Moreover, the synergism between CMC and SOE-N-60 surfactants plays a significant role in the preparation and stability of HIPEs.
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Affiliation(s)
- Qian Chen
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
| | - Xiumei Tai
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
| | - Jiyun Li
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
| | - Chunhui Li
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
| | - Lingxiao Guo
- China Research Institute of Daily Chemistry Company, Limited, 34 Wenyuan Street, Taiyuan, Shanxi 030001, People's Republic of China
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33
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34
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Guan X, Ngai T. pH-Sensitive W/O Pickering High Internal Phase Emulsions and W/O/W High Internal Water-Phase Double Emulsions with Tailored Microstructures Costabilized by Lecithin and Silica Inorganic Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:2843-2854. [PMID: 33595319 DOI: 10.1021/acs.langmuir.0c03658] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Synergistic stabilization of Pickering emulsions by a mixture of surfactants and colloidal particles has received increasing interest in recent years but only a few of them can produce high internal phase double emulsions (HIPDEs) with good stability. In this study, we present a feasible and common method of preparing Pickering high internal phase emulsions (HIPEs) with tunable inner morphology costabilized by a biosurfactant lecithin and silica nanoparticles. We investigate the influence of the pH value on the interfacial behavior of lecithin and elucidate the synergistic mechanism between lecithin and silica nanoparticles in different conditions in the stability of as-prepared emulsions. Specifically, water-in-oil (W/O) Pickering HIPEs can be successfully stabilized by lecithin and hydrophobic silica nanoparticles in a wide pH range (pH 1-10), while catastrophic phase inversion occurred at high pH values (pH ≥ 11). Interestingly, stable water-in-oil-in-water (W/O/W) high internal phase double emulsions (HIPDEs) can also be prepared via a two-step method by the cooperation of lecithin and silica nanoparticles. Moreover, functional interconnected porous monoliths and microspheres are facilely fabricated by emulsion templates and their potential applications are explored.
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Affiliation(s)
- Xin Guan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - To Ngai
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
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35
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In-situ dispersion of casein to form nanoparticles for Pickering high internal phase emulsions. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110538] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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36
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Bacterial cellulose nanofibers improved the emulsifying capacity of soy protein isolate as a stabilizer for pickering high internal-phase emulsions. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106279] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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37
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Magnetic hydrophobic solids prepared from Pickering emulsions for the extraction of polycyclic aromatic hydrocarbons from chamomile tea. Talanta 2021; 224:121915. [PMID: 33379117 DOI: 10.1016/j.talanta.2020.121915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/16/2020] [Accepted: 11/19/2020] [Indexed: 11/22/2022]
Abstract
Two types of magnetic hydrophobic solids were prepared by Pickering emulsion photopolymerization using polystyrene-modified magnetic nanoparticles (PS-MNPs) as emulsion stabilizers. Additionally, PS-MNPs provided magnetic character to the final solids. W/O Pickering emulsions were produced with high amounts of oily phase (above 50 wt%), while O/W Pickering emulsions were formed with higher amounts of aqueous phase (above 60 wt%). These two types of emulsions led to two kind of solids with very different structures despite being formed by the same components. In this way, W/O Pickering emulsions produced monolithic solids, while O/W Pickering emulsions formed magnetic microparticles. Multi-walled carbon nanotubes (MWCNTs) were also added to the emulsions to provide higher hydrophobic character to the final solids. The structure and morphology of both magnetic solids containing the MWCNTs was characterized by scanning electron microscopy (SEM). Finally, their extraction efficiency was evaluated using polycyclic aromatic hydrocarbons (PAHs) as target analytes, both qualitatively (visually by the fluorescence emitted before and after the extraction) and quantitatively (using gas chromatography coupled to mass spectrometry). Therefore, the LODs ranged from 1 to 4 μg L-1 and the LOQs were between 3 and 12 μg L-1. The reproducibility of the extraction procedure with different batches of emulsions was acceptable with RSD values <13%. Finally, a recovery study was carried out in complex matrices such as chamomile tea, obtaining excellent recovery values which ranged from 99 to 108%.
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38
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A review of recent progress on high internal-phase Pickering emulsions in food science. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.10.016] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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39
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Ma C, Wang J, Cao L. Preparation of macroporous hybrid monoliths via iron‐based
MOFs‐stabilized CO
2
‐in‐water
HIPEs
and use for β‐amylase immobilization. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.5019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Chao Ma
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region Xinjiang University Urumqi China
| | - Jide Wang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region Xinjiang University Urumqi China
| | - Liqin Cao
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region Xinjiang University Urumqi China
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40
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Liu Y, Yan C, Chen J, Wang Y, Liang R, Zou L, McClements DJ, Liu W. Enhancement of beta-carotene stability by encapsulation in high internal phase emulsions stabilized by modified starch and tannic acid. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.106083] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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41
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Liu Z, Geng S, Jiang Z, Liu B. Fabrication and characterization of food-grade Pickering high internal emulsions stabilized with β-cyclodextrin. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.110134] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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42
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Jin Z, Jiang X, Dai Z, Xie L, Wang W, Shen L. Continuous Synthesis of Nanodroplet-Templated, N-Doped Microporous Carbon Spheres in Microfluidic System for CO 2 Capture. ACS APPLIED MATERIALS & INTERFACES 2020; 12:52571-52580. [PMID: 33170614 DOI: 10.1021/acsami.0c14044] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Microporous carbon has been widely known as a probable material to capture greenhouse gases. This work provides a facile synthesis of monodisperse biomass-derived microporous carbon spheres (CSs) for effective CO2 capture. The spheres were synthesized by a novel continuous microfluidic strategy from oil-in-water-in-oil ((O1/W2)/O2) emulsions. O1 nanodroplets could be self-assembled into the cores of micelles, which were formed by chitosan and surfactant F127 in the W2 phase through high-speed liquid-phase shearing. The obtained O1/W2 emulsion can be further sheared into a sphere by the O2 phase. After carbonization, nanodroplet-templated pores shrank to micropores and ultramicropores. The optimal sample showed the developed pore structure with a Brunauer-Emmett-Teller (BET) surface area of 576 m2/g and microporous volume of 0.22 cm3/g. Compared with O1 free CS, the dynamic adsorption capacity of CO2 was improved to 1.20 mmol/g from 0.42 mmol/g. The CO2 capture capacity, cycling stability, isosteric heats, and mass diffusion coefficient of CSs were evaluated as well. The results demonstrate that microporous CSs are promising candidates for CO2 capture with low cost and a green synthesis route, which was achieved via continuous microfluidic strategy using sustainable biomass chitosan as a carbon precursor and droplets as templates.
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Affiliation(s)
- Ziheng Jin
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Xia Jiang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
- National Engineering Research Centre for Flue Gas Desulfurization, Chengdu 610065, China
| | - Zhongde Dai
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
- National Engineering Research Centre for Flue Gas Desulfurization, Chengdu 610065, China
| | - Lingling Xie
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Wei Wang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Liang Shen
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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43
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PolyHIPE foams from pristine graphene: Strong, porous, and electrically conductive materials templated by a 2D surfactant. J Colloid Interface Sci 2020; 580:700-708. [PMID: 32712476 DOI: 10.1016/j.jcis.2020.07.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/03/2020] [Accepted: 07/06/2020] [Indexed: 11/20/2022]
Abstract
Graphene is attractive as a functional 2D surfactant for polymerized high internal phase emulsions (polyHIPEs) due to its remarkable mechanical and electrical properties. We have developed polyHIPEs stabilized by pristine, unoxidized graphene via the spontaneous exfoliation of graphite at high-energy aqueous/organic interfaces. The exfoliated graphene self-assembles into a percolating network and incorporates into the polyHIPE cell walls as verified by TEM. The resulting composites showed compressive strengths of 7.0 MPa at densities of 0.22 g/cm3 and conductivities up to 0.36 S/m. Systematically reducing the concentration of monomer in the oil phase by dilution with a porogenic-acting solvent increased the porosity and lowered the density of the polyHIPEs. Characterization of these composites indicated that graphene's high compressive strength and modulus was transferred to the polyHIPEs and provided mechanical reinforcement even at low polymer content. SEM showed that the morphology of the polymer changed with decreasing monomer content while the graphene lined cells retained their shape. Moreover, we show that the polyHIPEs contain a continuous graphene percolating network resulting in electrically conductive materials at low graphene loading.
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44
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Chitosan-hydrophobic alginate nanocomposites stabilized pH-triggered Pickering emulsion for drug controlled-release. Int J Biol Macromol 2020; 162:1888-1896. [DOI: 10.1016/j.ijbiomac.2020.08.092] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 08/01/2020] [Accepted: 08/10/2020] [Indexed: 12/21/2022]
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45
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Mokadem Z, Saidi-Besbes S, Lebaz N, Elaissari A. Magnetic monolithic polymers prepared from high internal phase emulsions and Fe3O4 triazole-functionalized nanoparticles for Pb2+, Cu2+ and Zn2+ removal. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104693] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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46
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Xu Y, Tang C, Binks B. Ultraefficient stabilization of high internal phase emulsions by globular proteins in the presence of polyols: Importance of a core-shell nanostructure. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105968] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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47
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Liu R, Lu Y, Pu W, Lian K, Sun L, Du D, Song Y, Sheng JJ. Low-Energy Emulsification of Oil-in-Water Emulsions with Self-Regulating Mobility via a Nanoparticle Surfactant. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03153] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rui Liu
- Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, PR China
| | - Yuanyuan Lu
- Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, PR China
| | - Wanfen Pu
- Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, PR China
| | - Kunlin Lian
- Downhole Operation Company of CNPC Chuanqing Drilling Engineering Co., Ltd., Chengdu 610052, PR China
| | - Lin Sun
- Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, PR China
| | - Daijun Du
- Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, PR China
| | - Yuyang Song
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, PR China
| | - James J. Sheng
- BoL L. Herd Department of Petroleum Engineering, Texas Tech University, P.O. Box 43111, Lubbock, Texas 79409, United States
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48
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Zia A, Pentzer E, Thickett S, Kempe K. Advances and Opportunities of Oil-in-Oil Emulsions. ACS APPLIED MATERIALS & INTERFACES 2020; 12:38845-38861. [PMID: 32805925 DOI: 10.1021/acsami.0c07993] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Emulsions are mixtures of two immiscible liquids in which droplets of one are dispersed in a continuous phase of the other. The most common emulsions are oil-water systems, which have found widespread use across a number of industries, for example, in the cosmetic and food industries, and are also of advanced scientific interest. In addition, the past decade has seen a significant increase in both the design and application of nonaqueous emulsions. This has been primarily driven by developments in understanding the mechanism of effective stabilization of oil-in-oil (o/o) systems, either using block copolymers (BCPs) or solid (Pickering) particles with appropriate surface functionality. These systems, as highlighted in this review, have enabled emergent applications in areas such as pharmaceutical delivery, energy storage, and materials design (e.g., polymerization, monolith, and porous polymer synthesis). These o/o emulsions complement traditional emulsions that utilize an aqueous phase and allow the use of materials incompatible with water. We assess recent advances in the preparation and stabilization of o/o emulsions, focusing on the identity of the stabilizer (BCP or particle), the interplay between stabilizer and oils, and highlighting applications and opportunities associated with o/o emulsions.
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Affiliation(s)
- Aadarash Zia
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology and Drug Delivery Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Emily Pentzer
- Department of Chemistry, Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77807, United States
| | - Stuart Thickett
- School of Natural Sciences (Chemistry), The University of Tasmania, Hobart, Tasmania 7001 Australia
| | - Kristian Kempe
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology and Drug Delivery Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia
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49
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Zhang X, Jia K, Zhang L, Zhang J, Dai Y, Yu L, Wen W, Mai Y. Pickering high internal phase emulsion costabilized by a low amount of bio-based rigid surfactant with microsilica via depletion interaction and synergistic effect. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113505] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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50
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Dupont H, Fouché C, Dourges MA, Schmitt V, Héroguez V. Polymerization of cellulose nanocrystals-based Pickering HIPE towards green porous materials. Carbohydr Polym 2020; 243:116411. [DOI: 10.1016/j.carbpol.2020.116411] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/04/2020] [Accepted: 05/05/2020] [Indexed: 01/16/2023]
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