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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.0c01349
|2 doi
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|a pubmed24n1045.xml
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Andrade, Brenda
|e verfasserin
|4 aut
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| 245 |
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|a Nonionic Surfactant Properties of Amphiphilic Hyperbranched Polyglycerols
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|c 2020
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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 Completed 29.09.2020
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|a Date Revised 29.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The surfactant properties of amphiphilic hyperbranched polyglycerols (HPGs) were investigated. The HPGs were prepared by ring-opening multibranching polymerization of glycidol using hydrophobic initiators of varying size and structure. The cloud points for all HPG surfactants were found to be >80 °C in deionized water with >1 wt % NaCl. The HPG surfactants with hydrophilic-lipophilic balance values between 16 and 18 were found to form stable octanol/water (o/w) emulsions within a 24 h period. Several surface properties, including critical micelle concentration (CMC), efficiency of surface tension reduction (pC20), effectiveness of surface tension reduction (γCMC), surface excess concentration at the CMC (Γmax), minimum area/molecule at the interface (Amin), and the CMC/C20 ratio of the HPG surfactants were measured in deionized water at 22.6 °C. In general, increasing HPG size was marked by an increase in minimum surface area per molecule (Amin) at the aqueous liquid/air interface. This increase in size also led to lower CMC and greater pC20 values of HPG surfactants prepared with Tergitol 15-S-7 initiator (HPG 5a-5d), a commercially available ethylene glycol oligomer with a branched hydrophobic tail
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Knewstub, Samuel N
|e verfasserin
|4 aut
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1 |
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|a Harris, Keith
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tucker, Christopher J
|e verfasserin
|4 aut
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1 |
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|a Katz, Joshua S
|e verfasserin
|4 aut
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| 700 |
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|a Zimmerman, Steven C
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 36(2020), 34 vom: 01. Sept., Seite 10103-10109
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:36
|g year:2020
|g number:34
|g day:01
|g month:09
|g pages:10103-10109
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|u http://dx.doi.org/10.1021/acs.langmuir.0c01349
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