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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.0c03322
|2 doi
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|a pubmed24n1070.xml
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|a (NLM)33554605
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|a DE-627
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|e rakwb
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|a eng
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|a Gao, Yong
|e verfasserin
|4 aut
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|a Amphiphilic Double-Brush Copolymers with a Polyurethane Backbone
|b A Bespoke Macromolecular Emulsifier for Ionic Liquid-in-Oil Emulsion
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|c 2021
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 23.02.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The study on ionic liquid (IL)-based emulsions is very interesting due to the "green" quality and potential wide applications of ILs, whereas the emulsifiers for the formation of IL-based emulsions are extremely limited and mainly centered on low molecular weight surfactants. In this work, synthesis of amphiphilic double-brush copolymers (DBCs) and their application as bespoke macromolecular emulsifiers for the formation of IL-containing non-aqueous emulsions are described. DBCs consisted of a polyurethane (PU) backbone and poly(N,N-dimethyl acrylamide) (PDMA) and poly(methyl methacrylate) (PMMA) chains that were grafted simultaneously at the same reactive site along the PU backbone (PU-g-PDMA/PMMA), which were synthesized through the combination of polyaddition and the reversible-deactivation radical polymerization reactions. Highly stable [Bmim][PF6]-in-benzene emulsions could be gained by adopting PU-g-PDMA/PMMA DBCs as macromolecular emulsifiers at a low content, such as 0.025 wt %. On the basis of the stability and the size of emulsion droplets, PU-g-PDMA/PMMA DBCs exhibited much better emulsifying performances than their analogues, including PU-g-PDMA, PU-g-PMMA, and PDMA-b-PMMA copolymers. Such excellent emulsifying performances of PU-g-PDMA/PMMA DBCs were due to high interfacial activities. PU-g-PDMA/PMMA DBCs exhibited higher capabilities in lowering the interfacial tension of the [Bmim][PF6]-benzene interface than their analogues. A large energy barrier to desorption of adsorbed PU-g-PDMA/PMMA DBCs from the interface contributed to high stability of the [Bmim][PF6]-in-benzene emulsion
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|a Journal Article
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|a Wu, Xionghui
|e verfasserin
|4 aut
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|a Xiang, Zhe
|e verfasserin
|4 aut
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|a Qi, Chenze
|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 1992
|g 37(2021), 7 vom: 23. Feb., Seite 2376-2385
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:37
|g year:2021
|g number:7
|g day:23
|g month:02
|g pages:2376-2385
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|u http://dx.doi.org/10.1021/acs.langmuir.0c03322
|3 Volltext
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