Phase and rheological behavior of a gemini cationic surfactant aqueous system

Soft Matter ◽  
2012 ◽  
Vol 8 (39) ◽  
pp. 10115 ◽  
Author(s):  
Xi-Lian Wei ◽  
Xiu-Hong Wang ◽  
De-Zhi Sun ◽  
Ji-Feng Liu ◽  
Jie Liu ◽  
...  
Keyword(s):  
Cationic Surfactant ◽  
Rheological Behavior ◽  
Aqueous System ◽  
Gemini Cationic Surfactant

scholarly journals Hydrothermal Synthesis of Hydroxyapatite Assisted by Gemini Cationic Surfactant

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Tao Zhang ◽  
Xiufeng Xiao
Keyword(s):  
Solid Solution ◽  
Hydrothermal Synthesis ◽  
Hydrothermal Treatment ◽  
Cationic Surfactant ◽  
Surfactant Concentration ◽  
Average Diameter ◽  
New Strategy ◽  
3D Architecture ◽  
Solution Reaction ◽  
Gemini Cationic Surfactant

Hydroxyapatite (HAp) has been synthesized by a hydrothermal treatment in the presence of a Gemini cationic surfactant. This process is a new strategy of synthesis and mainly consists of two parts, i.e., an ordinary hydrothermal treatment and a liquid-solid-solution reaction (LSS strategy). Crystalline HAp nanorods or nanogranules with length of 50-180 nm and width of 30-40 nm were produced by ordinary hydrothermal treatment. By contrary, HAp spheres with a 3D architecture were fabricated with Gemini cationic surfactant by LSS strategy. For Gemini cationic surfactant concentration of 0.05%, spherical HAp particles with an average diameter of 1.7 μm were obtained.

Rheological Behavior and Structure of a Commercial Esterquat Surfactant Aqueous System

2010 ◽  
Vol 33 (3) ◽  
pp. 481-488 ◽  
Author(s):  
N. Calero ◽  
M. C. Alfaro ◽  
M. Á. Lluch ◽  
M. Berjano ◽  
J. Muñoz
Keyword(s):  
Rheological Behavior ◽  
Aqueous System

Interaction of cationic surfactant with acid yellow dye in absence/presence of organic and inorganic additives: conductivity and dye solubilization methods

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Md. Ariful Haque ◽  
Shamim Mahbub ◽  
Mohammad Majibur Rahman ◽  
Md. Anamul Hoque ◽  
Dileep Kumar ◽  
...  
Keyword(s):  
Free Energy ◽  
Cationic Surfactant ◽  
Cetyltrimethylammonium Bromide ◽  
Micelle Formation ◽  
Aqueous System ◽  
Nacl Solution ◽  
Solubilization Capacity ◽  
Delta G ◽  
Free Energy Of Micellization ◽  
Dye Solubilization

Abstract In the present study, the conductometric and dye-solubilization techniques have been utilized to investigate the interaction between an anionic dye (acid yellow 23 [AY]) and a cationic surfactant (cetyltrimethylammonium bromide [CTAB]) in presence of organic (ethanol)/inorganic (NaCl) additives. From the conductometric method, two critical micelle concentrations (cmc) were found for AY + CTAB mixture in an aqueous system and the cmc values were found to undergo a change with the variation of AY concentrations. The cmc values of AY + CTAB systems were observed higher in the alcoholic medium, while the same was found to be lower in the NaCl solutions. The change in cmc of AY + CTAB systems shows an U-like curve with an increase of temperature. The negative free energy of micellization ( Δ G m o ${\Delta}{G}_{m}^{o}$ ) for the AY + CTAB systems has indicated a spontaneous micelle formation in all of the cases studied. The enthalpy ( Δ H m o ${\Delta}{H}_{m}^{o}$ ), as well as the entropy of micellization ( Δ S m o ${\Delta}{S}_{m}^{o}$ ) for the AY + CTAB systems, were assessed and discussed with proper reasoning. Additionally, the enthalpy-entropy compensation parameters were also investigated and illustrated. The solubility of AY and C D was observed to rise linearly with an increase in the concentration of CTAB/NaCl solution. The solubilization capacity (χ) of AY, the molar partition coefficient (K M) amongst the micellar and the aqueous phase, and free energy of solubilization ( Δ G S o ${\Delta}{G}_{S}^{o}$ ) were evaluated and discussed in detail. The former parameters undergo an increase with an increase of NaCl concentrations.

Preparation of Novel Gemini Quaternary Ammonium Salt Cationic Surfactant

2012 ◽  
Vol 174-177 ◽  
pp. 1433-1436 ◽  
Author(s):  
Zong Cheng Miao ◽  
Fang Wang ◽  
Deng Deng ◽  
Yong Ming Zhang ◽  
Xiao Ping Huo ◽  
...  
Keyword(s):  
Surface Tension ◽  
Ammonium Chloride ◽  
Cationic Surfactant ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Foam Stability ◽  
High Surface ◽  
Amine Hydrochloride ◽  
Gemini Cationic Surfactant

In order to obtain some novel cationic surfactants with high surface activity, n-octadecyldimethylamine and epichlorohydrin were used to synthesize 2-hydroxy-1, 3-dis (chloride octadecyl dimethyl ammonium) propane, which was a kind of gemini quaternary ammonium salt. N-octadecyldimethylamine and epichlorohydrin were used to prepare active epoxy intermediate glycidyloctadecyldimethyl ammonium chlorided, and then glycidyloctadecyldimethyl ammonium chlorided was reacted with octadecyldimethyl amine hydrochloride to synthesize the gemini cationic surfactant. FTIR and 1H NMR were used to represent structure of the gemini cationic surfactant. The interface characteristics were studied in detail. The critical micellar concentration (CMC) was determined by surface tension test to obtain the values of CMC and surface tension at CMC. The foam ability and foam stability of the gemini cationic surfactant were also discussed through contrast octadecyltrimethyl ammonium chloride and cetyltrimethyl ammonium chloride.

Rheological behavior of viscoelastic wormlike micelles in mixed sodium dodecyl trioxyethylene sulfate–monolaurin aqueous system

2008 ◽  
Vol 286 (14-15) ◽  
pp. 1613-1619 ◽  
Author(s):  
Suraj Chandra Sharma ◽  
Rekha Goswami Shrestha ◽  
Lok Kumar Shrestha ◽  
Kenji Aramaki
Keyword(s):  
Rheological Behavior ◽  
Sodium Dodecyl ◽  
Aqueous System ◽  
Wormlike Micelles
Sign in / Sign up

Export Citation Format

Share Document