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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1021/la304601p
|2 doi
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|a pubmed25n0751.xml
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|a (NLM)23441904
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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|a Njauw, Ching-Wei
|e verfasserin
|4 aut
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|a Molecular interactions between lecithin and bile salts/acids in oils and their effects on reverse micellization
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 10.09.2013
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|a Date Revised 26.03.2013
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a It has been known that the addition of bile salts to lecithin organosols induces the formation of reverse wormlike micelles and that the worms are similar to long polymer chains that entangle each other to form viscoelastic solutions. In this study, we further investigated the effects of different bile salts and bile acids on the growth of lecithin reverse worms in cyclohexane and n-decane. We utilized rheological and small-angle scattering techniques to analyze the properties and structures of the reverse micelles. All of the bile salts can transform the originally spherical lecithin reverse micelles into wormlike micelles and their rheological behaviors can be described by the single-relaxation-time Maxwell model. However, their efficiencies to induce the worms are different. In contrast, before phase separation, bile acids can induce only short cylindrical micelles that are not long enough to impart viscoelasticity. We used Fourier transform infrared spectroscopy to investigate the interactions between lecithin and bile salts/acids and found that different bile salts/acids employ different functional groups to form hydrogen bonds with lecithin. Such effects determine the relative positions of the bile salts/acids in the headgroups of lecithin, thus resulting in varying efficiencies to alter the effective critical packing parameter for the formation of wormlike micelles. This work highlights the importance of intermolecular interactions in molecular self-assembly
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Alkanes
|2 NLM
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|a Bile Acids and Salts
|2 NLM
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|a Cyclohexanes
|2 NLM
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|a Lecithins
|2 NLM
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|a Micelles
|2 NLM
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|a Oils
|2 NLM
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|a Cyclohexane
|2 NLM
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|a 48K5MKG32S
|2 NLM
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| 650 |
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|a decane
|2 NLM
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| 650 |
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|a NK85062OIY
|2 NLM
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| 700 |
1 |
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|a Cheng, Chih-Yang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ivanov, Viktor A
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Khokhlov, Alexei R
|e verfasserin
|4 aut
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| 700 |
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|a Tung, Shih-Huang
|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 1985
|g 29(2013), 12 vom: 26. März, Seite 3879-88
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnas
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| 773 |
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|g volume:29
|g year:2013
|g number:12
|g day:26
|g month:03
|g pages:3879-88
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|u http://dx.doi.org/10.1021/la304601p
|3 Volltext
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