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Wu Y, Bao Z, Zhang S, Liu R, Ping Y, Ma M, Gao Y, He C, Wu T, Ma Y, Zhang C, Du F. Salinity-Driven Interface Self-Assembly of a Biological Amphiphilic Emulsifier to Form Stable Janus Core-Shell Emulsion for Enhancing Agrichemical Delivery. ACS NANO 2024; 18:9486-9499. [PMID: 38497998 DOI: 10.1021/acsnano.3c11919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Agrichemical losses are a severe threat to the ecological environment. Additionally, some agrichemical compounds contain abundant salt, which increases the instability of formulations, leading to a lower agrichemical utilization and soil hardening. Fortunately, the biological amphiphilic emulsifier sodium deoxycholate alleviates these problems by forming stable Janus core-shell emulsions through salinity-driven interfacial self-assembly. According to the interfacial behavior, dilational rheology, and molecular dynamics simulations, Janus-emulsion molecules are more closely arranged than traditional-emulsion molecules and generate an oil-water interfacial film that transforms into a gel film. In addition, at the same spray volume, the deposition area of the Janus emulsion increased by 37.70% compared with that of the traditional emulsion. Owing to the topology effect and deformation, the Janus emulsion adheres to rice micropapillae, achieving better flush resistance. Meanwhile, based on response of the Janus emulsion to stimulation by carbon dioxide (CO2), the emulsion lost to the soil can form a rigid shell for inhibiting the release of pesticides and metal ions from harming the soil. The pyraclostrobin release rate decreased by 50.89% at 4 h after the Janus emulsion was exposed to CO2. The Chao1 index of the Janus emulsion was increased by 12.49% as compared to coconut oil delivery in soil microbial community. The Janus emulsion ingested by harmful organisms can be effectively absorbed in the intestine to achieve better control effects. This study provides a simple and effective strategy, which turns waste into treasure, by combining metal ions in agrichemicals with natural amphiphilic molecules to prepare stable emulsions for enhancing agrichemical rainfastness and weakening environmental risk.
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Affiliation(s)
- Yanling Wu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Zhenping Bao
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Songhao Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Rui Liu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Yuan Ping
- Suzhou Fengbei Biotech Stock Co., Ltd., Zhangjiagang 215600, Jiangsu Province, People's Republic of China
| | - Min Ma
- Suzhou Fengbei Biotech Stock Co., Ltd., Zhangjiagang 215600, Jiangsu Province, People's Republic of China
| | - Yuxia Gao
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Chengyi He
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Tianyue Wu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Yongqiang Ma
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Chenhui Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
| | - Fengpei Du
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, People's Republic of China
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Effect of emulsifier HLB on aerated emulsions: Stability, interfacial behavior, and aeration properties. J FOOD ENG 2023. [DOI: 10.1016/j.jfoodeng.2023.111505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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Yu S, Zhang T, Xing J. A facile approach preparing PMMA nanospheres through in-situ surfactant miniemulsion photopolymerization under green LED irradiation. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Dowlati S, Javadi A, Miller R, Bahramian A. Characterization of reactive interfaces via coupled interfacial tension measurements and interphase mass transfer analysis. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Zentner CA, Anson F, Thayumanavan S, Swager TM. Dynamic Imine Chemistry at Complex Double Emulsion Interfaces. J Am Chem Soc 2019; 141:18048-18055. [PMID: 31674769 DOI: 10.1021/jacs.9b06852] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Interfacial chemistry provides an opportunity to control dynamic materials. By harnessing the dynamic covalent nature of imine bonds, emulsions are generated in situ, predictably manipulated, and ultimately destroyed along liquid-liquid and emulsion-solid interfaces through simple perturbation of the imine equilibria. We report the rapid production of surfactants and double emulsions through spontaneous in situ imine formation at the liquid-liquid interface of oil/water. Complex double emulsions with imine surfactants are stable to neutral and basic conditions and display dynamic behavior with acid-catalyzed hydrolysis and imine exchange. We demonstrate the potential of in situ imine surfactant formation to generate complex surfactants with biomolecules (i.e., antibodies) for biosensing applications. Furthermore, imine formation at the emulsion-solid interface offers a triggered payload release mechanism. Our results illustrate how simple, dynamic interfacial imine formation can translate changes in bonding to macroscopic outputs.
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Affiliation(s)
- Cassandra A Zentner
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
| | - Francesca Anson
- Department of Chemistry , University of Massachusetts - Amherst , Amherst , Massachusetts 01003 , United States
| | - S Thayumanavan
- Department of Chemistry , University of Massachusetts - Amherst , Amherst , Massachusetts 01003 , United States
| | - Timothy M Swager
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
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Effects of HLB value on oil-in-water emulsions: Droplet size, rheological behavior, zeta-potential, and creaming index. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.06.022] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Giustiniani A, Drenckhan W, Poulard C. Interfacial tension of reactive, liquid interfaces and its consequences. Adv Colloid Interface Sci 2017; 247:185-197. [PMID: 28760412 DOI: 10.1016/j.cis.2017.07.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 07/14/2017] [Accepted: 07/14/2017] [Indexed: 11/15/2022]
Abstract
Dispersions of immiscible liquids, such as emulsions and polymer blends, are at the core of many industrial applications which makes the understanding of their properties (morphology, stability, etc.) of great interest. A wide range of these properties depend on interfacial phenomena, whose understanding is therefore of particular importance. The behaviour of interfacial tension in emulsions and polymer blends is well-understood - both theoretically and experimentally - in the case of non-reactive stabilization processes using pre-made surfactants. However, this description of the interfacial tension behaviour in reactive systems, where the stabilizing agents are created in-situ (and which is more efficient as a stabilization route for many systems), does not yet find a consensus among the community. In this review, we compare the different theories which have been developed for non-reactive and for reactive systems, and we discuss their ability to capture the behaviour found experimentally. Finally, we address the consequences of the reactive stabilization process both on the global emulsions or polymer blend morphologies and at the interfacial scale.
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Affiliation(s)
- Anaïs Giustiniani
- Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Orsay Cedex 91405, France.
| | - Wiebke Drenckhan
- Institut Charles Sadron, Université de Strasbourg, Strasbourg, France
| | - Christophe Poulard
- Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Orsay Cedex 91405, France.
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Powell KC, Damitz R, Chauhan A. Relating emulsion stability to interfacial properties for pharmaceutical emulsions stabilized by Pluronic F68 surfactant. Int J Pharm 2017; 521:8-18. [PMID: 28192158 DOI: 10.1016/j.ijpharm.2017.01.058] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 01/12/2017] [Accepted: 01/28/2017] [Indexed: 11/19/2022]
Abstract
We explore mechanisms of emulsion stability for several systems using Pluronic F68 and a range of oils commonly used in pharmaceutics and cosmetics. We report measurements of dynamic emulsion drop size, zeta potential, and creaming time, as well as dynamic interfacial tension and interfacial viscoelasticity. Experiments show that with 1wt% Pluronic F68, soybean oil emulsions were the most stable with no creaming over six months, followed by isopropyl myristate, octanoic acid, and then ethyl butyrate. The eventual destabilization occurred due to the rising of large drops which formed through Ostwald ripening and coalescence. While Ostwald ripening is important, it is not the dominant destabilization mechanism for the time scale of interest in pharmaceutical emulsions. The more significant destabilization mechanism, coalescence, is reduced through surfactant adsorption, which decreases surface tension, increases surface elasticity, and adds a stearic hindrance to collisions. Though the measured values of elasticity obtained using a standard oscillatory pendant drop method did not correlate to emulsion stability, this is because the frequencies for the measurements were orders of magnitude below those relevant to coalescence in emulsions. However, we show that the high frequency elasticity obtained by fitting the surface tension data to a Langmuir isotherm has very good correlation with the emulsion stability, indicating that the elasticity of the interface plays a key role in stabilizing these pharmaceutical formulations. Further, this study highlights how these important high frequency elasticity values can be easily estimated from surface isotherms.
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Affiliation(s)
- Kristin Conrad Powell
- Department of Chemical Engineering, University of Florida, 1030 Center Drive, Gainesville, FL, 32611, United States.
| | - Robert Damitz
- Department of Chemical Engineering, University of Florida, 1030 Center Drive, Gainesville, FL, 32611, United States.
| | - Anuj Chauhan
- Department of Chemical Engineering, University of Florida, 1030 Center Drive, Gainesville, FL, 32611, United States.
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Kubo T, Bentz KC, Powell KC, Figg CA, Swartz JL, Tansky M, Chauhan A, Savin DA, Sumerlin BS. Modular and rapid access to amphiphilic homopolymers via successive chemoselective post-polymerization modification. Polym Chem 2017. [DOI: 10.1039/c7py01585b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A modular and simplified post-polymerization modification strategy is developed for the synthesis of amphiphilic homopolymers.
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Affiliation(s)
- Tomohiro Kubo
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville
| | - Kyle C. Bentz
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville
| | - Kristin C. Powell
- Department of Chemical Engineering
- University of Florida
- Gainesville
- USA
| | - C. Adrian Figg
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville
| | - Jeremy L. Swartz
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville
| | - Maxym Tansky
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville
| | - Anuj Chauhan
- Department of Chemical Engineering
- University of Florida
- Gainesville
- USA
| | - Daniel A. Savin
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville
| | - Brent S. Sumerlin
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville
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Hong IK, Kim SI, Park BR, Choi J, Lee SB. Evaluation of Emulsion Stability for Cosmetic Facial Cream Emulsion Using Mixed Nonionic Emulsifier. APPLIED CHEMISTRY FOR ENGINEERING 2016. [DOI: 10.14478/ace.2016.1078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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