Cationic surfactant–directed structural control of NaCl crystals from evaporating sessile droplets

Soft Matter ◽  
2021 ◽  
Author(s):  
Jayant K Dewangan ◽  
Nandita Basu ◽  
Mithun Chowdhury
Keyword(s):  
Sodium Chloride ◽  
Cationic Surfactant ◽  
Structural Control ◽  
Cetyltrimethylammonium Bromide ◽  
Crystallisation Process

We report morphological regulation of NaCl (sodium chloride) crystals through the evaporative crystallisation process of microdroplets containing a cationic surfactant CTAB (cetyltrimethylammonium bromide). Various fascinating evaporative salt morphologies are observed...

Effect of cationic surfactant cetyltrimethylammonium bromide on the enzymatic hydrolysis of cellulose

Cellulose ◽  
2016 ◽  
Vol 24 (1) ◽  
pp. 61-68 ◽  
Author(s):  
Xuliang Lin ◽  
Cheng Cai ◽  
Hongming Lou ◽  
Xueqing Qiu ◽  
Yuxia Pang ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Cationic Surfactant ◽  
Cetyltrimethylammonium Bromide ◽  
Enzymatic Hydrolysis Of Cellulose ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

scholarly journals Electrophoretic properties of complexes between DNA and the cationic surfactant cetyltrimethylammonium bromide

2005 ◽  
Vol 26 (15) ◽  
pp. 2908-2917 ◽  
Author(s):  
Rita S. Dias ◽  
Roine Svingen ◽  
Bodil Gustavsson ◽  
Björn Lindman ◽  
Maria G. Miguel ◽  
...  
Keyword(s):  
Cationic Surfactant ◽  
Cetyltrimethylammonium Bromide

Molten fatty acid based microemulsions

2016 ◽  
Vol 18 (23) ◽  
pp. 15911-15918 ◽  
Author(s):  
Cecile Noirjean ◽  
Fabienne Testard ◽  
Christophe Dejugnat ◽  
Jacques Jestin ◽  
David Carriere
Keyword(s):  
Fatty Acid ◽  
Melting Point ◽  
Cationic Surfactant ◽  
Myristic Acid ◽  
Cetyltrimethylammonium Bromide ◽  
Ternary Mixtures ◽  
Polar Phase

We show that ternary mixtures of water (polar phase), myristic acid (MA, apolar phase) and cetyltrimethylammonium bromide (CTAB, cationic surfactant) studied above the melting point of myristic acid allow the preparation of microemulsions without adding a salt or a co-surfactant.

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.

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