Wormlike micelles and gels reinforced by hydrogen bonding in aqueous cationic gemini surfactant systems

  title={Wormlike micelles and gels reinforced by hydrogen bonding in aqueous cationic gemini surfactant systems},
  author={Xiao-mei Pei and Jian-xi Zhao and Yizhang Ye and Yi You and Xilian Wei},
  journal={Soft Matter},
The viscoelastic properties of the wormlike micellar solutions of 2-hydroxyl-propanediyl-α,ω-bis(dimethyldodecylammonium bromide) and 2-hydroxyl-propanediyl-α,ω-bis(dimethyltetradecylammonium bromide), abbreviated as 12-3(OH)-12 and 14-3(OH)-14, respectively, have been investigated using steady state and frequency sweep rheological measurements. For comparison, the wormlike micellar solutions of propanediyl-α,ω-bis(dimethyldodecylammonium bromide) (referred to as 12-3-12) were also examined on… 
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This research shows that a more uniform distribution of positive charges around the spacer could result in a more effective electrostatic screening effect between the charged headgroups, and promote the formation of a worm-like micelle.
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The self-assembly behavior of gemini surfactants in ethylene glycol (EG)-water (5/95, v/v) mixed solvent was investigated by rheological measurements at 10 °C. The influence of molecular structure of
Wormlike micelles formed using Gemini surfactants with quaternary hydroxyethyl methylammonium headgroups.
Compared with conventional bis(dimethylalkylammonium) bromide Gemini molecules with the same spacer, 14-4-14 MEA demonstrated a better ability to fabricate wormlike micelles because of the change in the headgroup structure.
Effect of aging time and salt on the viscosity behaviour of a Gemini cationic surfactant
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Thermo-responsive properties driven by hydrogen bonding in aqueous cationic gemini surfactant systems.
The reversible conversion of elastic hydrogel to wormlike micelles in the aqueous solution of the 16-3(OH)-16(2Cl) system in the presence of an inorganic salt was observed at relatively low temperatures.
pH-Responsive Rheological Properties and Microstructure Transition in Mixture of Anionic Gemini/Cationic Monomeric Surfactants
The weakened charges of the headgroups in a catanionic mixed system minimizes the micellar spontaneous curvature and enhances the intermolecular hydrogen-bonding interaction between C12C3C12(SO3)2, facilitating the formation of a viscous solution, which would greatly induce entanglement and even the fusion of wormlike micelles, thus resulting in branched microstructures and a decline of viscosity.
Unique Phase Behaviors in the Gemini Surfactant/EAN Binary System: The Role of the Hydroxyl Group.
The hydroxyl group in the spacer of a cationic Gemini surfactant caused dramatic changes of the phase behaviors in a protic ionic liquid (EAN), and the hexagonal phases formed with 12-3OH-12 exhibited lower viscoelasticity and thermostability than those observed in 12- 3-12/EAN system.
Self-assembly and rheological behavior of novel anionic and cationic gemini surfactants
A series of novel carboxylate anionic gemini surfactants SL-n-SL (n = 3, 6, 10) were synthesized, and their rheological properties with a cationic gemini surfactant (12-3(OH)-12) were investigated in


Phase and Rheological Behavior of Novel Gemini-Type Surfactant Systems
A novel anionic gemini-type surfactant with no spacer group, disodium 2,3-didodecyl-1,2,3,4-butanetetracarboxylate (GS), was investigated for its phase behavior in water, water/decane, and
Phase and Rheological Behavior of Salt-Free Alkyltrimethylammonium Bromide/Alkanoyl-N-methylethanolamide/Water Systems
Addition of N-hydroxyethyl-N-methyldodecanamide (NMEA-12) and N-hydroxyethyl-N-methylhexadecanamide (NMEA-16) to dilute solutions of hexadecyltrimethylammonium bromide (CTAB) and
Microstructure and Dynamics of Wormlike Micellar Solutions Formed by Mixing Cationic and Anionic Surfactants
Small-angle neutron scattering (SANS) and rheology are used to probe the wormlike micelles formed in mixtures of a cationic (cetyl trimethylammonium tosylate, CTAT) and an anionic surfactant (sodium
Effect of the Lipophilicity of the Counterion on the Viscoelasticity of Micellar Solutions of Cationic Surfactants
We have studied the effect of the lipophilicity of the counterions X- on the rheological properties of aqueous solutions of cetyltrimethylammonium-based surfactants (CTAX): cetyltrimethylammonium
Viscoelastic wormlike micellar solutions made from nonionic surfactants: structural investigations by SANS and DLS.
The results of structural investigations with small-angle neutron scattering (SANS) are reported to confirm that a gradual increase in micellar length with an increasing C12EO(j) concentration was assumed from the results of model calculations and rheological measurements.
Highly Viscoelastic Wormlike Micellar Solutions Formed by Cationic Surfactants with Long Unsaturated Tails
Cationic surfactants having long (C22) mono-unsaturated tails were studied in aqueous solutions containing salt using steady and dynamic rheology. The surfactant erucyl