scholarly journals A Fluorescence Study on Surface Properties of Cationic Gemini Surfactant with Some Special Alcohols

2020 ◽  
Vol 10 (2) ◽  
pp. 126-130
Author(s):  
Riyaj Mohammad
Keyword(s):  
Surface Properties ◽  
Gemini Surfactant ◽  
Gemini Surfactants ◽  
Aggregation Number ◽  
Fluorescence Emission ◽  
Mixed System ◽  
Fluorescence Emission Spectrum ◽  
Cationic Gemini Surfactant ◽  
Pyrene Fluorescence ◽  
Coating Agents

Alcohols are very important additives and played a measure role as co-surfactants in various industrial and research applications. While, Gemini surfactants are mainly used as effective emulsifiers, antifoaming agents, bactericidal agents, coating agents and corrosion inhibitors etc.  Therefore, it is important to study about the variations in alkanol concentrations which affects the aggregation number and other related parameters. Surface properties of gemini surfactant butanediyl-1,4-bis(dimethyldodecylammonium bromide) (12-4-12) has been studied by using fluorescence method. This method has been used to calculate the aggregation number (Nagg) and the other related parameters like dielectric constant (D), Stern Volmer binding constant (KSV) of mixed system. This method is also very important for the calculation of the micropolarity of the mixed system (gemini/alcohol). The micropolarity has been obtained with the help of the ratio of intensity of peaks (I1/I3) of the pyrene fluorescence emission spectrum. Cetylpridinium chloride and pyrene were used as quencher and probe, respectively. Keywords: Gemini surfactant, special alcohols, aggregation number, micropolarity

Surface Activity Research of Cationic Gemini Surfactants

2013 ◽  
Vol 690-693 ◽  
pp. 2076-2080
Author(s):  
Zhen Zhong Fan ◽  
Lan Lan Li ◽  
Li Feng Zhang ◽  
Qing Wang Liu
Keyword(s):  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Surface Activity ◽  
Surfactant Concentration ◽  
Gemini Surfactant ◽  
Gemini Surfactants ◽  
Ph Value ◽  
Inorganic Salts ◽  
Cationic Gemini Surfactant ◽  
Cationic Gemini Surfactants

Cationic Gemini surfactant concentration, the inorganic salts added and the pH value of surface tension obtained cationic gemini surfactant critical micelle concentration is 0.4mmol / L;by adding three kinds of inorganic salts NaCl, MgCl2, and Na2SO4 ,which Na2SO4 has the greatest impact on surface tension, followed by MgCl2.The surface minimum tension of the pH ranged from 9 to 11 , indicating that the surface activity of cationic gemini surfactants achieved the highest.

scholarly journals Controllable enzymatic superactivity of α-chymotrypsin activated by the electrostatic interaction with cationic gemini surfactants

RSC Advances ◽  
2021 ◽  
Vol 11 (13) ◽  
pp. 7294-7304
Author(s):  
Zheng Yue ◽  
Meihuan Yao ◽  
Guangyue Bai ◽  
Jiuxia Wang ◽  
Kelei Zhuo ◽  
...  
Keyword(s):  
Charge Density ◽  
Electrostatic Interaction ◽  
Gemini Surfactant ◽  
Gemini Surfactants ◽  
Cationic Gemini Surfactant ◽  
Cationic Gemini Surfactants ◽  
Novel Strategy

This study proposes a novel strategy to enhance enzymatic superactivity of α-CT by controlling the charge density of cationic gemini surfactant.

Surface Activity Research of Cationic Gemini Surfactants

2013 ◽  
Vol 652-654 ◽  
pp. 1450-1454
Author(s):  
Zhen Zhong Fan ◽  
Lan Lan Li ◽  
Li Feng Zhang ◽  
Qing Wang Liu
Keyword(s):  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Surface Activity ◽  
Surfactant Concentration ◽  
Gemini Surfactant ◽  
Gemini Surfactants ◽  
Ph Value ◽  
Inorganic Salts ◽  
Cationic Gemini Surfactant ◽  
Cationic Gemini Surfactants

Cationic Gemini surfactant concentration, the inorganic salts added and the pH value of surface tension obtained cationic gemini surfactant critical micelle concentration is 0.4mmol / L;by adding three kinds of inorganic salts NaCl, MgCl2, and Na2SO4 ,which Na2SO4 has the greatest impact on surface tension, followed by MgCl2.The surface minimum tension of the pH ranged from 9 to 11 , indicating that the surface activity of cationic gemini surfactants achieved the highest.

scholarly journals Inhibitory influence of cationic Gemini surfactant on the dissolution rate of N80 carbon steel in 15% HCl solution

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. A. Deyab ◽  
Q. Mohsen
Keyword(s):  
Gemini Surfactant ◽  
Gemini Surfactants ◽  
Physical Adsorption ◽  
Significant Risk ◽  
Steel Pipe ◽  
Inhibitory Influence ◽  
Corrosion Properties ◽  
Cationic Gemini Surfactant ◽  
Significant Performance ◽  
Petroleum Wells

AbstractStrong acids are commonly used in petroleum wells to remove scale layers from the surface of N80 C-steel pipe. The corrosive effects of these acids, on the other hand, pose a significant risk to C-steel pipes. For the first time, we discovered the anti-corrosion properties of cationic Gemini surfactant, 1,2-bis(dodecyldimethylammonio) ethane dibromide (DMAEB), for N80 C-steel pipe in acid washing solution (15.0% HCl). The DMAEB, in particular, can reduce the corrosion rate of N80 C-steel by approximately 97%. DMAEB molecules work as a mixed-type corrosion inhibitor, according to electrochemical results. The DMAEB demonstrated a high inhibition effect at high temperatures, as well as high activation energy against the corrosion process. DMAEB's significant performance is primarily due to physical adsorption on the N80 C-steel surface, as confirmed by adsorption isotherms, SEM, EDX, FT-IR, and theoretical studies. Our findings shed new light on the use of Gemini surfactants as corrosion inhibitors in petroleum wells.

Sulfidogenic-corrosion inhibitory effect of cationic monomeric and gemini surfactants: planktonic and sessile diversity

RSC Advances ◽  
2016 ◽  
Vol 6 (48) ◽  
pp. 42263-42278 ◽  
Author(s):  
A. Labena ◽  
M. A. Hegazy ◽  
H. Horn ◽  
E. Müller
Keyword(s):  
Metal Surface ◽  
Gemini Surfactant ◽  
Gemini Surfactants ◽  
Inhibitory Effect ◽  
Bulk Phase ◽  
Cationic Gemini Surfactant

A cationic monomeric surfactant (CMS) and a cationic gemini surfactant (CGS) were successfully synthesized and characterized. Both surfactants prevent sulfidogenic activity in bulk phase and on metal surface (biofilms) at a salinity of 3.18% NaCl.

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