Exploring the charged nature of supramolecular micelles based on p-sulfonatocalix[6]arene and dodecyltrimethylammonium bromide

2015 ◽  
Vol 17 (39) ◽  
pp. 26378-26385 ◽  
Author(s):  
Nuno Basílio ◽  
Daniel Alfonso Spudeit ◽  
Juliana Bastos ◽  
Leandro Scorsin ◽  
Haidi D. Fiedler ◽  
...  
Keyword(s):  
Capillary Electrophoresis ◽  
Cationic Surfactant ◽  
Dodecyltrimethylammonium Bromide

Kinetic probes were used together with capillary electrophoresis experiments to get insights into the interfacial and solubilizing properties of supramolecular micelles made of an anionic calix[6]arene and a cationic surfactant.

Modified electroosmotic flow by cationic surfactant additives in capillary electrophoresis

1997 ◽  
Vol 772 (1-2) ◽  
pp. 171-178 ◽  
Author(s):  
Marina F.M. Tavares ◽  
Rosana Colombara ◽  
Sérgio Massaro
Keyword(s):  
Capillary Electrophoresis ◽  
Cationic Surfactant ◽  
Electroosmotic Flow

Micellar catalysis in mixed anionic/cationic surfactant systems

1994 ◽  
Vol 72 (12) ◽  
pp. 2443-2446 ◽  
Author(s):  
Yvette L. Favaro ◽  
Vincent C. Reinsborough
Keyword(s):  
Cationic Surfactant ◽  
Sodium Dodecylsulfate ◽  
Kinetic Studies ◽  
Micellar Catalysis ◽  
Stopped Flow ◽  
Complexation Reaction ◽  
Dodecyltrimethylammonium Bromide ◽  
Micellar Solutions ◽  
Decyltrimethylammonium Bromide ◽  
Anionic Micelles

Dye solubility and stopped-flow kinetic studies were conducted in sodium dodecylsulfate/dodecyltrimethylammonium bromide and sodium dodecylsulfate/decyltrimethylammonium bromide micellar solutions with excess anionic surfactant. The enhanced rate in the presence of anionic micelles of the Ni2+(aq)/pyridine-2-azo-p-dimethylaniline (PADA) complexation reaction was used as a probe of the mixed micellar situation. PADA solubilities and the kinetic parameters derived through the Robinson model for micellar catalysis were consistent with a complete incorporation of the cationic surfactant into the sodium dodecylsulfate micelles.

scholarly journals Unlimited-Volume Electrokinetic Stacking Injection in Sweeping Capillary Electrophoresis Using a Cationic Surfactant

2006 ◽  
Vol 78 (17) ◽  
pp. 6035-6042 ◽  
Author(s):  
Maojun Gong ◽  
Kenneth R. Wehmeyer ◽  
Patrick A. Limbach ◽  
William R. Heineman
Keyword(s):  
Capillary Electrophoresis ◽  
Cationic Surfactant ◽  
Electrokinetic Stacking

Interaction of a Cationic Surfactant with an Oppositely Charged Polymer

2017 ◽  
Vol 32 (3-4) ◽  
pp. 107 ◽  
Author(s):  
Soumen Ghosh ◽  
Arpan Mal ◽  
Tanushree Chakraborty ◽  
Gobinda Chandra De ◽  
Daniel Gerrard Marangoni
Keyword(s):  
Aqueous Medium ◽  
Cationic Surfactant ◽  
Carboxymethyl Cellulose ◽  
Hydrophobic Interactions ◽  
Dodecyltrimethylammonium Bromide ◽  
Behavioural Pattern ◽  
Anionic Sites ◽  
Anionic Polymer ◽  
Electrostatic And Hydrophobic Interactions ◽  
Oppositely Charged

The interactions between the cationic surfactant Dodecyltrimethylammonium Bromide (DTAB) and anionic polymer sodium carboxymethyl cellulose (Na-CMC) in aqueous medium were studied at 300K over different concentrations of Na-CMC by tensiometry, conductometry, viscometry, turbidimetry and fluorimetry. Aggregation of surfactant was attained in two steps, the first being the monomeric adsorption of surfactants on anionic sites of the polymer saturating at lower concentrations of surfactant and the second one being the formation of micelles by surfactants at higher concentrations. Mainly, two types of interactions prevailed throughout namely, electrostatic and hydrophobic interactions. Due to the variation of the interactions depending on the concentrations of polymer, there has been considerable differences in the behavioural pattern of the profiles for the lower concentrations of polymer compared to that of the upper ones.

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