Structure of Polyglycerol Oleic Acid Ester Nonionic Surfactant Reverse Micelles in Decane: Growth Control by Headgroup Size

Langmuir ◽  
2010 ◽  
Vol 26 (10) ◽  
pp. 7015-7024 ◽  
Author(s):  
Lok Kumar Shrestha ◽  
Martin Dulle ◽  
Otto Glatter ◽  
Kenji Aramaki
Keyword(s):  
Oleic Acid ◽  
Nonionic Surfactant ◽  
Acid Ester ◽  
Reverse Micelles ◽  
Growth Control

scholarly journals Study of the Growth Control of Nonionic Surfactant Reverse Micelles by Water and Glycerol Using Small-angle X-ray Scattering

1970 ◽  
Vol 24 ◽  
pp. 12-18
Author(s):  
Lok Kumar Shrestha
Keyword(s):  
Nonionic Surfactant ◽  
Water Content ◽  
Small Angle ◽  
Reverse Micelles ◽  
Growth Control ◽  
X Ray ◽  
Micellar Size ◽  
X Ray Scattering ◽  
Micellar Core ◽  
Ray Scattering

This paper described a facile route to the growth control of nonionic surfactant reverse micelles in diglycerol monolaurate (C12G2)/cyclohexane systems at 25°C. Structural characterization of reverse micelles was carried out using small-angle X-ray scattering (SAXS) technique. It has found that C12G2 spontaneously formed elongated prolate type reverse micelles in cyclohexane at 25°C and the micellar size grows with CC12G2 concentration. The reverse micelles could solubilize some amount of water in the micellar core thus enhanced their potential application in the encapsulation of water-soluble drugs. Phase separation occurred with further addition of water. The micelles grow with the amount of water content in the system, as water tends to go to the micellar core swelling the micelles. However, the size decreased with increasing temperature at fixed water content. Increasing mixing fraction of glycerol in water decreased the micellar size. This would be understood as glycerol dehydrates surfactant's headgroup and increased the packing parameter. Keywords: Diglycerol monolaurat;, Cyclohexane;  glycerol;, Small-angle X-ray scattering (SAXS), Reverse micelles.DOI: 10.3126/jncs.v24i0.2381Journal of Nepal Chemical Society, Vol. 24, 2009 Page: 12-18  

Structure and Growth Control of a Nonionic Surfactant Micelle by Adding a Phospholipid

Langmuir ◽  
2001 ◽  
Vol 17 (26) ◽  
pp. 8016-8023 ◽  
Author(s):  
Su Yong Kwon ◽  
Mahn Won Kim
Keyword(s):  
Nonionic Surfactant ◽  
Growth Control ◽  
Surfactant Micelle

In-Situ Formation of Silver Nanoparticles Using Nonionic Surfactant Reverse Micelles as Nanoreactors

2014 ◽  
Vol 14 (3) ◽  
pp. 2238-2244 ◽  
Author(s):  
Lok Kumar Shrestha ◽  
Rekha Goswami Shrestha ◽  
Neus Vilanova ◽  
Carlos Rodriguez-Abreu ◽  
Katsuhiko Ariga
Keyword(s):  
Silver Nanoparticles ◽  
Nonionic Surfactant ◽  
Reverse Micelles ◽  
In Situ Formation

Protein Refolding Mediated by Reverse Micelles of Cibacron Blue F-3GA Modified Nonionic Surfactant

2006 ◽  
Vol 22 (2) ◽  
pp. 499-504 ◽  
Author(s):  
X.-Y. Wu ◽  
Y. Liu ◽  
X.-Y. Dong ◽  
Y. Sun
Keyword(s):  
Nonionic Surfactant ◽  
Reverse Micelles ◽  
Protein Refolding ◽  
Cibacron Blue

scholarly journals Effect of Mixing Solvents on the Structure of Trehalose Tri-isostearate Nonionic Surfactant Reverse Micelles

2012 ◽  
Vol 27 ◽  
pp. 26-33
Author(s):  
Rekha Goswami Shrestha ◽  
Lok Kumar Shrestha
Keyword(s):  
Nonionic Surfactant ◽  
Internal Structure ◽  
Reverse Micelles ◽  
Solvent Polarity ◽  
Ambient Conditions ◽  
Subtle Difference ◽  
X Ray Scattering ◽  
Solvent Dependence ◽  
Chain Lengths ◽  
Reverse Micellar

Effects of mixing fraction of n-decane (Dec) with n-tetradecane (TD) on the shape, size, and internal structure of trehalose tri-isostearate (designated as TQ-3) nonionic surfactant reverse micelles have been investigated using small-angle X-ray scattering (SAXS) technique. TQ-3 self-assembles into a variety of reverse micellar structures in different organic solvents under ambient conditions It was found that a subtle difference in solvent polarity plays a crucial on the structure of reverse micelles. To better understand the solvent dependence of reverse micellar structure, an attempt has been made studying the effects of mixing solvents (alkanes). Three alkanes with different alkyl chain lengths; C10, C12, and C14, were considered and C10 and C14 were mixed in different mixing fractions (wt ratio). SAXS measurements were carried out on 5 wt% TQ-3 systems under ambient conditions. Micellar size and the internal structure (cross-section diameter) were found to depend on mixing fractions of solvents and could be explained in terms of packing parameter.DOI: http://dx.doi.org/10.3126/jncs.v27i1.6438 J. Nepal Chem. Soc., Vol. 27, 2011 26-33 Uploaded date: 16 July, 2012

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