Rheological Properties and Microstructures of Anionic Micellar Solutions in the Presence of Different Inorganic Salts

Mu, Jian‐Hai; Li, Ganzuo; Jia, Xiaolei; Wang, Hongxia; Zhang, Gaoyong

doi:10.1021/jp014096a

Cited by 102 publications

(73 citation statements)

References 37 publications

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“…The surfactants are mixed together to tune detergency and other properties for final products. Understanding the rheological properties of the mixed-surfactant aqueous solutions is essential for practical applications and, thus, there have been many studies on this issue (Mu et al, 2002). However, as far as we know, there are only a few studies which focus on the relationship between rheology and micellar structure (Acharya et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Salt-concentration dependence of the structure and form factors for the wormlike micelle made from a dual surfactant in aqueous solutions

Eguchi

Kaneda²,

Hiwatari³

et al. 2007

J Appl Cryst

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Small-angle X-ray scattering (SAXS) from dual-surfactant aqueous solutions made from sodium lauryl ether sulfate and coconut fatty acid amido propyl betaine was systematically measured as a function of the net sodium cation concentration, [Na + ]*, and the surfactant concentration, C D . The SAXS intensity [I(q)] was normalized to C D and the resultant I(q)/C D was extrapolated to C D = 0 to give a form factor P(q) for each [Na + ]* [where q = 4 sin( /2)/ is the magnitude of the scattering vector, is the wavelength and 2 is the scattering angle]. The low-q behaviour of P(q) was consistent with long rigid cylinders. The middle-and high-q profiles fitted well with a core-shell cylinder model for all [Na + ]*. The core and total radii (R c and R s ) did not depend on [Na + ]* at all: R c = 1.2 AE 0.05 and R s = 3.1 AE 0.05 nm for [Na + ]* = 0.42-1.5 mol l À1 , indicating that the salt concentration changes did not induce any structural changes and reassembling of the surfactants comprising the micelles. This fact is in contrast to the rheological behaviour where the relaxation mode strongly depends on [Na + ]*. The structure factor [S(q)] was obtained by dividing I(q)/C D by P(q) for each C D and the mean distance (d m ) between the micelles was obtained from the first maximum of S(q) versus q plots. The d m value decreased with increasing C D and [Na + ]*, which is in good agreement with the theoretical prediction and experimental results for charged wormlike micelle solutions.

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Section: Introductionmentioning

confidence: 99%

Salt-concentration dependence of the structure and form factors for the wormlike micelle made from a dual surfactant in aqueous solutions

Eguchi

Kaneda²,

Hiwatari³

et al. 2007

J Appl Cryst

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“…Therefore, knowledge on the structure and dynamics of wormlike micellar systems is important for the optimization of these applications [12][13][14][15][16] . Salt induced wormlike micelles in ionic surfactants have been widely reported [17][18][19][20] . A few papers are available in the literature on the rheological behavior of wormlike micelles in mixed system of ionic/nonionic surfactant systems [21][22][23][24][25] .…”

mentioning

confidence: 99%

Wormlike Micelles in Mixed Amino Acid Surfactant/Nonionic Surfactant Aqueous Systems and the Effect of Added Electrolytes

Shrestha¹,

Rodríguez‐Abreu²,

Aramaki³

2009

J. Oleo Sci.

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“…For conventional single-chain cationic surfactants, micelles may change from global to rod like or wormlike with the addition of inorganic salts [22][23].…”

Section: Resultsmentioning

confidence: 99%

Micellization Behavior of Cetyltrimethylammonium bromide in Presence and Absence of Na2SO4 and MgSO4 in Aqueous media

2016

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Viscosity and surface tension measurements of cetyltrimethylammonium bromide (CTAB) in presence and absence of Na 2 SO 4 and MgSO 4 in aqueous media are reported. The results showed an increase in viscosity with increase in concentration of cetyltrimethylammonium bromide in presence and absence of salts where as the decrease in surface tension with increase in concentration of cetyltrimethylammonium bromide in presence and absence of salts. The viscosity of CTAB was observed lowest in pure water and increases in presence of MgSO 4 and then more increases in presence of Na 2 SO 4 where as the surface tension of CTAB was observed highest in pure water and decreases in presence of Na 2 SO 4 and then more decreases in presence of MgSO 4 .The critical micelle concentration (cmc) of CTAB decreases in presence of salts in both viscosity and surface tension measurements. The decreasing cmc of CTAB are found to be more in the presence of Na 2 SO 4 in comparison with the presence of MgSO 4 for both measurements. The graphs of viscosity versus log[C] and the surface tension versus log[C] are used in determining the critical micelle concentration (cmc).

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Rheological Properties and Microstructures of Anionic Micellar Solutions in the Presence of Different Inorganic Salts

Cited by 102 publications

References 37 publications

Salt-concentration dependence of the structure and form factors for the wormlike micelle made from a dual surfactant in aqueous solutions

Salt-concentration dependence of the structure and form factors for the wormlike micelle made from a dual surfactant in aqueous solutions

Wormlike Micelles in Mixed Amino Acid Surfactant/Nonionic Surfactant Aqueous Systems and the Effect of Added Electrolytes

Micellization Behavior of Cetyltrimethylammonium bromide in Presence and Absence of Na2SO4 and MgSO4 in Aqueous media

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