Effect of temperature and additives on the critical micelle concentration and thermodynamics of micelle formation of sodium dodecyl benzene sulfonate and dodecyltrimethylammonium bromide in aqueous solution: A conductometric study

2014 ◽  
Vol 71 ◽  
pp. 205-211 ◽  
Author(s):  
S. Chauhan ◽  
Kundan Sharma
Keyword(s):  
Aqueous Solution ◽  
Sodium Dodecyl ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Micelle Formation ◽  
Effect Of Temperature ◽  
Dodecyltrimethylammonium Bromide ◽  
Benzene Sulfonate ◽  
Conductometric Study ◽  
Dodecyl Benzene Sulfonate ◽  
Thermodynamics Of Micelle Formation

The Sensitive Fluorimetric Method for the Determination of Curcumin Using the Enhancement of Mixing Micelle

2014 ◽  
Vol 525 ◽  
pp. 89-92
Author(s):  
Wei Huang ◽  
Feng Wang ◽  
Hong Long Zhu
Keyword(s):  
Aqueous Solution ◽  
Detection Limit ◽  
Fluorescence Intensity ◽  
Sodium Dodecyl ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Benzene Sulfonate ◽  
Fluorimetric Method ◽  
Dodecyl Benzene Sulfonate

It is found that the fluorescence of curcumin is greatly enhanced by La3+ in the prescence of sodium dodecyl benzene sulfonate (SDBS). Based on this, a sensitive fluorimetric method for the determination of curcumin in aqueous solution is proposed. In the HOAc-NaOAc buffer, the fluorescence intensity of curcumin is proportional to the concentration of curcumin in the range of 0.0074-7.4μg·mL-1 and the detection limit is 3.66ng·mL-1. The actual samples are satisfactorily determined.

Characterization and Catalytic Activity of Fenton-Like Catalyst: Fe2O3/Attapulgite

2012 ◽  
Vol 501 ◽  
pp. 128-133
Author(s):  
Shu Rong Yu ◽  
Ting Zhang ◽  
Hui Xia Feng
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Fenton Reaction ◽  
Sodium Dodecyl ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Benzene Sulfonate ◽  
Secondary Pollutants ◽  
Ft Ir ◽  
Dodecyl Benzene Sulfonate ◽  
Anion Surfactant

Fe2O3/attapulgite(ATP) catalyst was successfully prepared for Fenton reaction to degrade an anion surfactant, sodium dodecyl benzene sulfonate(SDBS)，in an aqueous solution. BET, SEM, FT-IR were performed to characterize Fe2O3/ ATP catalyst. Comparative studies indicated that the SDBS degradation ratios were much higher in presence of Fe2O3/ATP and H2O2 than those in presence of Fe2O3/ATP or H2O2 only, which suggested that the Fe2O3/ATP-catalyzed Fenton-like reaction governed the SDBS removal process. It also can be seen that Fe2O3/ATP-catalyzed Fenton-like reaction almost has the same efficiency as homogeneous Fenton reaction, while the former can be reused and has no secondary pollutants.

Micellization of a Zwitterionic Gemini Surfactant and its Interaction with Anionic Surfactant in Aqueous Medium

2014 ◽  
Vol 1073-1076 ◽  
pp. 2106-2111 ◽  
Author(s):  
Yan Cheng Zheng ◽  
Li Wen Yu ◽  
Deng Pan ◽  
Ping Mei ◽  
Lu Lai
Keyword(s):  
Anionic Surfactant ◽  
Mixed Micelle ◽  
Gemini Surfactant ◽  
Sodium Dodecyl ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Micelle Formation ◽  
Head Group ◽  
Benzene Sulfonate ◽  
Different Temperatures ◽  
Dodecyl Benzene Sulfonate

A surface properties of a sulfobetaine–type zwitterionic gemini surfactant with the structure of 1,2-bis [N-methyl-N-(3-sulfopropyl) -dodecylammonium] ethane betaine (ZGS12), were investigated in aqueous solution . The critical micelle concentration (CMC) of the gemini surfactant at different temperatures and mixed micelle properties of ZGS12 and sodium dodecyl benzene sulfonate (SDBS) were investigated. The results show that cmc of the gemini surfactant (ZGS12) decreases with raising temperature, Gibbs free energy changes and entropy changes are negative and postive, respectively, indicating the formation of micelle is spontaneous and driven mainly by entropy. According to the theory of regular solution , interaction parameters between the zwitterionic gemini surfactant ZGS12 and the anionic surfactant SDBS indicate strong attractive interaction and great degree of synergism in micelle formation due to weakening of the electrostatic head group repulsion.

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