A new reverse wormlike micellar system: mixtures of bile salt and lecithin in organic liquids

Journal of the American Chemical Society
Shih-Huang TungSrinivasa R Raghavan

Abstract

We report a new route for forming reverse wormlike micelles (i.e., long, flexible micellar chains) in nonpolar organic liquids such as cyclohexane and n-decane. This route involves the addition of a bile salt (e.g., sodium deoxycholate) in trace amounts to solutions of the phospholipid lecithin. Previous recipes for reverse wormlike micelles have usually required the addition of water to induce reverse micellar growth; here, we show that bile salts, due to their unique "facially amphiphilic" structure, can play a role analogous to that of water and promote the longitudinal aggregation of lecithin molecules into reverse micellar chains. The formation of transient entangled networks of these reverse micelles transforms low-viscosity lecithin organosols into strongly viscoelastic fluids. The zero-shear viscosity increases by more than 5 orders of magnitude, and it is the molar ratio of bile salt to lecithin that controls the viscosity enhancement. The growth of reverse wormlike micelles is also confirmed by small-angle neutron scattering (SANS) experiments on these fluids.

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Citations

Apr 15, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Lok Kumar ShresthaKenji Aramaki
Apr 26, 2012·Journal of Oleo Science·Kaname HashizakiYoshihiro Saito
Nov 18, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Chih-Yang ChengShih-Huang Tung
Feb 18, 2014·Journal of Controlled Release : Official Journal of the Controlled Release Society·Yosra S R ElnaggarOssama Y Abdallah
Nov 2, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Shih-Ting LinShih-Huang Tung
Dec 17, 2014·Journal of Colloid and Interface Science·V PatelP Bahadur
May 20, 2015·Physical Chemistry Chemical Physics : PCCP·S Vierros, M Sammalkorpi
Jul 25, 2017·The Journal of Physical Chemistry. B·Anastasia A MarkinaShih-Huang Tung
Dec 23, 2017·Soft Matter·Reinhard Sigel
Jun 1, 2016·Physical Chemistry Chemical Physics : PCCP·Cecile NoirjeanDavid Carriere
Nov 8, 2017·Food & Function·Andrew B MathesonPaul S Clegg
Aug 10, 2017·Physical Chemistry Chemical Physics : PCCP·Vaishali SethiAshok K Ganguli
Jul 22, 2010·Physical Chemistry Chemical Physics : PCCP·Stephen CummingsJulian Eastoe
Feb 19, 2011·Physical Chemistry Chemical Physics : PCCP·Lok Kumar ShresthaKenji Aramaki
Sep 17, 2013·Chemical Communications : Chem Comm·Jiaqi ZhangHe Tian
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Dec 8, 2020·Beilstein Journal of Organic Chemistry·David LieseGebhard Haberhauer
Jun 23, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Srinivasa R Raghavan
Jun 12, 2008·Journal of the American Chemical Society·Shih-Huang TungSrinivasa R Raghavan
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Jul 24, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Yueju ZhaoGuanying Yang
Jul 26, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Shih-Huang Tung, Srinivasa R Raghavan
Feb 26, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Lok Kumar ShresthaKenji Aramaki
Dec 25, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Rakesh KumarSrinivasa R Raghavan
Feb 27, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Lok Kumar ShresthaKenji Aramaki
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