Synthesis, Surface Activity, and Antimicrobial Efficacy of Hydrogenated Cardanol‐Derived Positively Charged Asymmetric Gemini Surfactants

2019 ◽  
Vol 22 (6) ◽  
pp. 1289-1298
Author(s):  
Mengen Huang ◽  
Jingyi Ma ◽  
Xunshen Wu ◽  
Min Zhao ◽  
Limin Wang ◽  
...  
Keyword(s):  
Surface Activity ◽  
Gemini Surfactants ◽  
Antimicrobial Efficacy ◽  
Positively Charged

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.

pH-Responsive Surface Activity and Solubilization with Novel Pyrrolidone-Based Gemini Surfactants

Langmuir ◽  
2012 ◽  
Vol 28 (18) ◽  
pp. 7174-7181 ◽  
Author(s):  
Zan Jiang ◽  
Xuefeng Li ◽  
Guangfu Yang ◽  
Li Cheng ◽  
Bo Cai ◽  
...  
Keyword(s):  
Surface Activity ◽  
Gemini Surfactants ◽  
Ph Responsive

scholarly journals Effects of Branched-Chain Alcohols on Surface Activity and Micellization of Gemini Surfactants

2014 ◽  
Vol 72 (6) ◽  
pp. 673 ◽  
Author(s):  
Yongqiang Tang ◽  
Linyi Zhu ◽  
Yuchun Han ◽  
Yilin Wang
Keyword(s):  
Surface Activity ◽  
Gemini Surfactants ◽  
Branched Chain

Inhibitive Performance of 1,4/1,6-Bis(α-Alkyl Pyridinium ) Butane/Hexane Dibromide on A3 Steel

2011 ◽  
Vol 339 ◽  
pp. 96-102
Author(s):  
Xiao Hui Jiang ◽  
Li Mei Zhou ◽  
Shan Zhuo Yao ◽  
Ming Duan ◽  
Xing Qi Hu
Keyword(s):  
Self Assembly ◽  
Gemini Surfactants ◽  
Alkyl Chain ◽  
Charge Transfer Resistance ◽  
Inhibition Rate ◽  
Gravimetric Measurement ◽  
Transfer Resistance ◽  
Alkyl Chains ◽  
Ft Ir ◽  
Positively Charged

1,6-bis(α-alkyl pyridinium ) hexane dibromide was synthesized and confirmed by 1H NMR, 13C NMR, FT-IR and MS. The inhibitive effect of the gemini surfactants for A3 steel in 20% hydrochloric acid was evaluated by gravimetric measurement and electrochemical method. The results indicated that the inhibitive efficiency of the gemini surfactants was affected by the concentration, the length of alkyl chain and spacer in the gemini surfactants. The inhibition rate increased with concentration, the surfactants with four methylenes as spacer showed a slightly better anticorrosive performance than those with six methylenes, and the gemini surfactants with decyl chains exhibited the best inhibitive efficiency. The adsorption of these gemini surfactants on the surface of A3 steel was in accordance with Langmuir isotherm. The electrochemical experiment revealed that the gemini surfactants were mix-type inhibitors. The current density decreased noticeably with the concentration while the charge-transfer resistance increased. The pyridinium rings and positively charged nitrogen atoms in the gemini molecule adsorbed on A3 steel surface and the alkyl chains formed a hydrophobic layer by virtue of self-assembly property of surfactants. Therefore the corrosion of A3 steel was effectively inhibited by the gemini surfactants.

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