scholarly journals Effect of ionic strength on rheological behavior of polymer-like cetyltrimethylammonium tosylate micellar solutions

Soft Matter ◽  
2011 ◽  
Vol 7 (5) ◽  
pp. 2094-2102 ◽  
Author(s):  
E. R. Macías ◽  
F. Bautista ◽  
J. H. Pérez-López ◽  
P. C. Schulz ◽  
M. Gradzielski ◽  
...  
Keyword(s):  
Ionic Strength ◽  
Rheological Behavior ◽  
Micellar Solutions ◽  
Cetyltrimethylammonium Tosylate

Cryogenic wormlike micelles

Soft Matter ◽  
2019 ◽  
Vol 15 (12) ◽  
pp. 2511-2516 ◽  
Author(s):  
Hongyao Yin ◽  
Yujun Feng ◽  
Peixun Li ◽  
James Doutch ◽  
Yixiu Han ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Rheological Behavior ◽  
Self Assembly ◽  
Mixed Solvent ◽  
Freezing Point ◽  
The Self ◽  
Wormlike Micelles ◽  
Micellar Solutions ◽  
Zwitterionic Surfactant

Cryogenic wormlike micellar solutions with a freezing point far below 0 °C and unique rheological behavior are fabricated from the self-assembly of a C22-tailed zwitterionic surfactant in a mixed solvent of ethylene glycol and water. Such fluids could find applications in areas where viscoelasticity is highly desired at subfreezing temperatures.

scholarly journals Rheological Behavior of Wormlike Micellar Solutions in Mixed Nonionic Systems of Polyoxyethylene Phytosterol-Polyoxyethylene Dodecyl Ether

2004 ◽  
Vol 53 (12) ◽  
pp. 599-606 ◽  
Author(s):  
Noboru NAITO ◽  
Durga P. ACHARYA ◽  
Junichi TANIMURA ◽  
Hironobu KUNIEDA
Keyword(s):  
Rheological Behavior ◽  
Micellar Solutions ◽  
Dodecyl Ether

Effect of ionic strength on the rheological behavior of aqueous cetyltrimethylammonium p-toluene sulfonate solutions

2007 ◽  
Vol 307 (1) ◽  
pp. 221-228 ◽  
Author(s):  
Miguel F. Torres ◽  
Juan M. González ◽  
Mario R. Rojas ◽  
Alejandro J. Müller ◽  
A. Eduardo Sáez ◽  
...  
Keyword(s):  
Ionic Strength ◽  
Rheological Behavior ◽  
Toluene Sulfonate

scholarly journals Protolytic Equilibria in Organized Solutions: Ionization and Tautomerism of Fluorescein Dyes and Related Indicators in Cetyltrimethylammonium Chloride Micellar Solutions at High Ionic Strength of the Bulk Phase

Liquids ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 1-24
Author(s):  
Nikolay O. Mchedlov-Petrossyan ◽  
Natalya A. Vodolazkaya
Keyword(s):  
Ionic Strength ◽  
Molecular Form ◽  
Tautomeric Equilibrium ◽  
Bulk Phase ◽  
Ionization Constants ◽  
Cooh Group ◽  
Micellar Solutions ◽  
Cetyltrimethylammonium Chloride ◽  
Ionic Equilibrium ◽  
Nitro Derivatives

Ionic equilibrium of 22 hydroxyxanthenes, including halogen and nitro derivatives of fluorescein, and their thio- and aza analogues, were studied spectrophotometrically in micellar solutions of cetyltrimethylammonium chloride at ionic strength of the bulk phase 4.0 M KCl. This micellar pseudophase is characterized by the electrostatic surface potential of +(15–16) mV and the ETN value of 0.623. In the case of dyes bearing the COOH group, colorless lactone is the predominant tautomer of the molecular form H2R. A new classification of fluoresceins is developed. The dyes were divided into four groups based on the nature of tautomerism of the anions. In the case of the fluorescein type, the monoanions HR− exist predominantly as “carboxylate” tautomers, with ionized carboxylic and non–ionized hydroxylic group. For the dyes of the eosin type, the situation is opposite, while for the intervening type of compounds, the concentrations of the two tautomers are comparable. Dyes capable of forming lactone anions HR− were classified as the fourth type. For some of them, even the dianion R2− exists as a lactone. The relationship between the stepwise ionization constants, Ka1/Ka2, varies from 1.3 to 1.07 × 105 and is determined by the state of tautomeric equilibrium of molecules and ions.

Sign in / Sign up

Export Citation Format

Share Document