Synthesis and dilute aqueous solution properties of ester functionalized cationic gemini surfactants having different ethylene oxide units as spacer

2014 ◽  
Vol 292 (7) ◽  
pp. 1685-1692 ◽  
Author(s):  
Avinash Bhadani ◽  
Takeshi Endo ◽  
Kenichi Sakai ◽  
Hideki Sakai ◽  
Masahiko Abe
2019 ◽  
Vol 233 (5) ◽  
pp. 707-720 ◽  
Author(s):  
Manorama Panda ◽  
Nazish Fatma ◽  
Mohammad Kamil

Abstract The present investigation involves the synthesis of a series of novel green ethylene oxide-linked diester-functionalized cationic gemini surfactants 2,2′-[(oxybis(ethane-1,2-diyl))bis(oxy)]bis(N-alkyl-N,N-dimethyl-2-oxoethanaminium) dichloride (Cm-DEG-Cm; m = 12, 14, 16). These compounds were characterized by 1H-NMR, MS-ESI (+), FT-IR spectroscopy and elemental analysis; their solution properties were evaluated by surface tension and rheology measurements. The dimeric surfactant, Cm-DEG-Cm, possesses improved physicochemical properties as compared to its monomeric counterpart. Much lower critical micelle concentration (cmc) makes the cationic gemini surfactants more useful for the biomedical, pharmaceutical, industrial and academic sectors. Longer the alkyl chain of surfactants lower are the cmc values, the order is C16-DEG-C16 < C14-DEG-C14 < C12-DEG-C12. For all the three synthesized gemini surfactants no cloud point was noticed in between the temperatures 0 °C to 100 °C at the concentrations 0.002 mM, 0.02 mM and 0.2 mM of the aqueous surfactant solutions which is a beneficial factor for the use of these amphiphiles in various areas of application.


Soft Matter ◽  
2013 ◽  
Vol 9 (36) ◽  
pp. 8745 ◽  
Author(s):  
Petar D. Petrov ◽  
Krassimira Yoncheva ◽  
Pavlina Mokreva ◽  
Spiro Konstantinov ◽  
Juan M. Irache ◽  
...  

2013 ◽  
Vol 558 ◽  
pp. 29-35 ◽  
Author(s):  
K. Łudzik ◽  
H. Piekarski ◽  
K. Kubalczyk ◽  
M. Wasiak

Polymer ◽  
1997 ◽  
Vol 38 (12) ◽  
pp. 2885-2891 ◽  
Author(s):  
Seigou Kawaguchi ◽  
Genji Imai ◽  
Junto Suzuki ◽  
Akira Miyahara ◽  
Toshiaki Kitano ◽  
...  

Soft Matter ◽  
2018 ◽  
Vol 14 (5) ◽  
pp. 754-764 ◽  
Author(s):  
J. Woch ◽  
J. Iłowska ◽  
Z. Hordyjewicz-Baran ◽  
S. Arabasz ◽  
B. Kaczmarczyk ◽  
...  

The aggregation behaviour of octadecyl gemini surfactants in water was related to the behaviour of their amide group containing analogues.


2015 ◽  
Vol 229 (3) ◽  
Author(s):  
Andleeb Z. Naqvi ◽  
Sahar Noori ◽  
Kabir-ud-Din

AbstractSurfactant solutions in practical applications usually are mixtures of different types, especially ionic and nonionic ones. The mixing behavior of nonionic Cremophor EL-cationic gemini systems was therefore investigated by surface tension measurements. The Gemini surfactants used were of the type alkanediyl –


2017 ◽  
Vol 50 (3) ◽  
pp. 231-237 ◽  
Author(s):  
Akihisa Nakamura ◽  
Yutaka Aoki ◽  
Masashi Osa ◽  
Daichi Ida ◽  
Takenao Yoshizaki

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