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251004s2025 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.5c03507
|2 doi
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|a eng
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| 100 |
1 |
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|a Li, Mingbo
|e verfasserin
|4 aut
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| 245 |
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|a Uncovering the Nanoscopic Phase Behavior of Ternary Solutions in the Presence of Electrolytes
|b From Pre-Ouzo to Ouzo Regions
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|c 2025
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|a Text
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|a ƒaComputermedien
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|a Date Revised 14.10.2025
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a In this work, we report a comprehensive study of how electrolyte addition governs the structure and stability of surfactant-free microemulsions in a trans-anethol/ethanol/water system. The universal structural response has been validated, spanning the full range of solution dispersed-phase structurings, from sub-10 nm water-in-oil (W/O) reverse aggregates to oil-in-water (O/W) mesoscopic droplets (∼100 nm) and classical Ouzo droplets (∼1 μm). Experimental results reveal that there is a threshold (∼10-3 M) for electrolyte levels above which O/W nanodroplet coalescence and phase separation are triggered: screening of electrical double layers and "salting-out" of hydrophobic components drive the hydrotrope into fewer, larger droplets. The total oil volume sequestered in the dispersed phase remains essentially constant (∼0.01%), indicating oil redistribution rather than dissolution. In contrast, W/O reverse aggregates (∼3 nm) in a predominantly organic medium display near-complete insensitivity to ionic strength, owing to low dielectric screening and tight interfacial packing that exclude substantial ion uptake. Finally, addition of high salt (e.g., 2.0 M NaCl) to Ouzo droplets accelerates their collapse: large droplets fuse and sediment, leaving only residual nanostructures and confirming electrolyte-driven phase demixing. This insight offers clear guidelines for designing additive-free emulsions with tailored lifetimes and nanostructure architectures across pharmaceutical, food, and materials applications
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|a Journal Article
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1 |
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|a Lai, Rushi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tian, Yadi
|e verfasserin
|4 aut
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| 700 |
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|a Gao, Yawen
|e verfasserin
|4 aut
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|a Wang, Benlong
|e verfasserin
|4 aut
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| 700 |
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|a Sun, Chao
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 41(2025), 40 vom: 14. Okt., Seite 27381-27392
|w (DE-627)NLM098181009
|x 1520-5827
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|g volume:41
|g year:2025
|g number:40
|g day:14
|g month:10
|g pages:27381-27392
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| 856 |
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|u http://dx.doi.org/10.1021/acs.langmuir.5c03507
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