Structural changes in a cationic surfactant-water mixtures

Zhang, Mengjie; Ping, Ali; Liu, Yangyang; Li, Laiming; Li, Qingxia; Wei, Xilian

doi:10.1080/00319104.2015.1033418

Cited by 6 publications

(5 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the values of C NaSal / C R 14 HTAB decrease after the first viscosity maximum as R 14 HTAB concentration is increased, which is analogous to results previously reported in the literature . This is perhaps related to the aggregation morphology of pure R 14 HTAB solutions at different concentrations, in which spherical micelles were observed at C R 14 HTAB = 100 or 200 mmol kg –1 and cylindrical micelles were seen at 300 or 400 mmol kg –1 . It is possible that the concentration of NaSal required to form an entangled network at the viscosity maximum was higher for the spherical micelles than for rodlike ones.…”

Section: Results and Discussionsupporting

confidence: 85%

“…At C R 14 HTAB > 300 mmol kg –1 the shear thinning phenomenon has been observed above the critical shear rate (γ̇ c ), implying micellar growth above this concentration. The overlap concentration of R 14 HTAB is 500 mmol kg –1 at 25.0 °C . When NaSal is added to the R 14 HTAB aqueous solution, the salt induced R 14 HTAB yields viscoelastic wormlike micelles at low concentration, for instance 100 mmol kg –1 .…”

Section: Results and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Rheological Properties of Viscoelastic Solutions in a Cationic Surfactant–Organic Salts–Water System

Wei

Geng

Han

et al. 2016

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

Viscoelastic solutions formed in the mixed aqueous solutions of 3tetradecyloxy-2-hydroxypropyltrimethylammonium bromide (R 14 HTAB) and aromatic salts such as sodium salicylate (NaSal), sodium 1-hydroxynaphthalene-2-carboxylate (1SHNC), and sodium 2-hydroxynaphthalene-3-carboxylate (2SHNC) were systematically studied by steady and dynamic shear rheology in terms of concentration and temperature. In the absence of a salt, R 14 HTAB only produced spherical or short cylindrical micelles within a range of concentrations of 100−400 mmol kg −1 . The addition of aromatic salts induced one-dimensional growth of micelles generating wormlike micelles. Zero-shear viscosity of the solutions shows viscosity maxima behavior in the examined range of salt concentration, where the strongest and the most stable network structures were formed. The changes in the viscoelastic behavior are a result of variation of the structural relaxation time, indicating that the flow behavior is primarily controlled by micellar kinetics. The microstructure of wormlike micelles and the reason for the variation in the microstructure with an increase in the additive concentration has been analyzed by infrared and 1 H NMR spectra measurements. The zero-shear viscosity reduces exponentially with increasing temperature.

show abstract

Section: Results and Discussionsupporting

confidence: 85%

Section: Results and Discussionmentioning

confidence: 99%

Rheological Properties of Viscoelastic Solutions in a Cationic Surfactant–Organic Salts–Water System

Wei

Geng

Han

et al. 2016

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…When the concentration was greater than inflection 3, the zero-shear viscosity of the solution showed no significant change. This indicated that new stable micelles were formed [56][57][58][59][60]. A schematic diagram of the above transformation process is shown in Figure S2.…”

Section: Shear Rheology Behaviormentioning

confidence: 95%

Synthesis and Aggregation Behavior of Hexameric Quaternary Ammonium Salt Surfactant Tz-6C12QC

Jiao,

Ma,

Zhang

et al. 2023

Polymers

View full text Add to dashboard Cite

A hexameric quaternary ammonium salt surfactant Tz-6C12QC featuring a rigid triazine spacer and six ammonium groups was synthesized. The molecular structure and aggregation behavior of Tz-6C12QC were characterized by nuclear magnetic resonance spectroscopy, surface tension, conductivity, dynamic light scattering, and transmission electron microscopy, etc. Dissipative particle dynamics (DPD) simulation was employed to investigate the self-assembly behavior of Tz-6C12QC at different concentrations. The rheological behavior of the polyacrylamide/Tz-6C12QC system was characterized by shear rheology. The results indicated that Tz-6C12QC exhibited superior surface activity and lower surface tension compared to conventional surfactants. Rheology analysis revealed that Tz-6C12QC had a significant viscosity reduction effect on polyacrylamide. DLS and TEM indicated that, as the concentration of Tz-6C12QC increased, monomer associations, spherical aggregations, vesicles, tubular micelles, and bilayer vesicles were sequentially formed in the solution. This study presents a synthetic approach for polysurfactants with a rigid spacer and sheds light on the self-assembly process of micelles.

show abstract

“…有交叉点形成, 呈现出典型柱状胶束的动态曲线特征 [21,22] . 结合稳态曲线的剪切稀化特征, 推断光照后 A "smart" fluid has been considered as an important part of softer matters, which undergoes a change in some macroscopic property in response to an external stimulus, such as light, pH, temperature and so on.…”

Section: 但体系经紫外光照射后整个频率范围内溶液的黏性响应均高于弹性响应 G′和g″随频率的增加几乎没mentioning

confidence: 99%

Rheological properties of photo-responsive system composed of cationic surfactant and azobenzene

Guo¹,

Chen²,

Liu³

et al. 2017

Chin. Sci. Bull.

View full text Add to dashboard Cite

Structural changes in a cationic surfactant-water mixtures

Cited by 6 publications

References 23 publications

Rheological Properties of Viscoelastic Solutions in a Cationic Surfactant–Organic Salts–Water System

Rheological Properties of Viscoelastic Solutions in a Cationic Surfactant–Organic Salts–Water System

Synthesis and Aggregation Behavior of Hexameric Quaternary Ammonium Salt Surfactant Tz-6C12QC

Rheological properties of photo-responsive system composed of cationic surfactant and azobenzene

Contact Info

Product

Resources

About