Interactions between betaine-type zwitterionic and anionic surfactants in mixed micelles

Iwasaki, Toshihiko.; Ogawa, Masataka; Esumi, Kunio; Meguro, Kenjiro

doi:10.1021/la00049a008

Cited by 91 publications

(60 citation statements)

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“…Addition of SDS to the DPC micelle results in a decrease in the cmc values to 0.94 and 0.65 mM at 298 K for the 9:1 and 5:1 DPC/SDS systems, respectively (assuming the cmc1 values for both mixtures). As it has been earlier reported, the cmc for the mixture of two oppositely charged surfactants becomes significantly smaller than that of separate surfactants due to mutual association of the surfactants induced by electrostatic attraction [34][35][36]. The present results can also be explained assuming that the association between the zwitterionic DPC and anionic SDS is favorable due to electrostatic attractions between the cationic fragment of DPC and the dodecyl sulfate anion.…”

Section: Itc Resultssupporting

confidence: 77%

Thermodynamics, size, and dynamics of zwitterionic dodecylphosphocholine and anionic sodium dodecyl sulfate mixed micelles

Sikorska

Wyrzykowski

Szutkowski

et al. 2015

J Therm Anal Calorim

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The thermodynamic properties of micellization for dodecylphosphocholine (DPC), sodium dodecyl sulfate (SDS), and their mixtures were studied using isothermal titration calorimetry. NMR relaxation measurements were used to explore molecular mobility of the DPC-containing micelles, whereas the diffusion measurements were taken to determine the micelle size. The DPC/SDS mixed systems reveal a tendency to form two kinds of micelles in buffered solution at lower temperatures. An increase in temperature as well as the transfer of the DPC/SDS mixed micelles from buffered to unbuffered solution results in only a single-step micellization process. The average size of the DPC-containing micelles is only slightly dependent on the SDS fraction. Examination of the data of spin-spin relaxation (T 2 ) shows that methylene protons on the polar headgroup of DPC and methylene protons (H1) on the hydrocarbon chain in the micellar systems studied reveal a heterogeneous dynamic behavior reflected in a twocomponent T 2 relaxation in the whole temperature range. The latter is the main constituent of the rigid interfacial layer core protecting the penetration of water into the hydrophobic interior.

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Section: Itc Resultssupporting

confidence: 77%

Thermodynamics, size, and dynamics of zwitterionic dodecylphosphocholine and anionic sodium dodecyl sulfate mixed micelles

Sikorska

Wyrzykowski

Szutkowski

et al. 2015

J Therm Anal Calorim

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“…The decrease in CMC values means that the amount of surfactant to form micelle decreases. It has been reported that the reduction of CMC values is attributed to the association of two oppositely charged surfactants induced by electrostatic attraction [13][14][15][16]20]. In the present work, dodecyl sulfate anions are associated with the cationic group in phosphobetaine by electrostatic attraction.…”

Section: Mixed System Of Ppbt and Sdsmentioning

confidence: 51%

“…It is interesting to know that there is a strong interaction between zwitterionic surfactants and anionic surfactants, which alters the surface tension, electrical conductivity, and viscoelastic properties [13,14]. To investigate the system behavior of phosphobetaine surfactant and anionic surfactant in aqueous solution, a series of solutions containing different ratios of PPBT-12 and SDS were prepared to measure the surface tensions at 28°C and pH = 6.8.…”

Section: Mixed System Of Ppbt and Sdsmentioning

confidence: 99%

“…Until now, the types of these surfactants are still limited. Furthermore, it has been found that zwitterionic surfactants can be associated with anionic surfactants by electrostatic interaction, which can tune the surface tension, electrical conductivity, and viscoelastic properties [13][14][15][16]. However, few results about the association between phosphobetaine surfactants and anionic surfactants have been reported.…”

Section: Introductionmentioning

confidence: 99%

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Physicochemical Properties of Novel Phosphobetaine Zwitterionic Surfactants and Mixed Systems with an Anionic Surfactant

Lan-ping

Xiao

Zhong

2011

J Surfact & Detergents

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A series of novel zwitterionic phosphobetaine (PPBT) surfactants were synthesized using long chain fatty alcohol, epichlorohydrin, dimethylamine and sodium dihydrogen phosphate as raw materials. The physicochemical properties of the phosphobetaine surfactants such as isoelectric point, foaming, surface tension, critical micelle concentration (CMC) and Krafft point were measured. Low CMC and surface tension values indicated the surface activities of the phosphobetaine surfactants were quite excellent. The CMC and surface tension values of PPBT/SDS mixed systems were determined. It was found both of CMC and surface tension values decreased compared with single surfactant system because of the association between dodecyl sulfate anions and cationic groups in phosphobetaine by electrostatic attraction.

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“…Different mechanisms of mixed micelle formation have been reported for these surfactant mixtures to explain the negative deviation of their CMC values with respect to ideal behavior. Thus, whereas Iwasaki et al (39) reported for C 12 -Betaine/SDS mixtures that the association of these surfactants occurred easily by electrostatic attraction between the cationic portion of the betaine and the SDS ion in the mixed micelles, Scamehorn et al (8) argued for SDS/NP(EO) 30 mixtures that the aforementioned charge separation was the cause of enhanced micelle formation. The fact that the aqueous surfactant concentration needed to saturate (S W,SAT ) or solubilize (S W,SOL ) liposomes was always comparable to the CMC of surfactant mixtures suggests that the mechanisms of mixed micelle formation reported for these mixtures could also be correlated with those governing the interaction of these mixtures, with the PC molecules building liposomes, specially during liposome solubilization via mixed micelle formation that included PC molecules.…”

Section: Resultsmentioning

confidence: 99%

Changes in phospholipid bilayers caused by sodium dodecyl sulfate/nonionic surfactant mixtures

Maza

Parra

1997

J Americ Oil Chem Soc

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The interaction of mixtures of sodium dodecyl sulfate (SDS) and oxyethylenated nonylphenol (30 mol of ethylene oxide) [NP(EO) 30 ] with phosphatidylcholine liposomes was investigated. Permeability alterations were detected as a change in 5(6)-carboxyfluorescein (CF) released from the interior of vesicles, and bilayer solubilization was measured as a decrease in the static light scattered by liposome suspensions. Three parameters were described as the effective surfactant/lipid molar ratios (Re) at which the surfactant system: (i) resulted in 50% CF release (Re 50%CF ); (ii) saturated the liposomes (Re SAT ); (iii) led to complete solubilization of these structures (Re SOL ). The corresponding surfactant partition coefficients (K 50%CF , K SAT , and K SOL ) were determined from these parameters. The free surfactant concentrations S W were lower than the mixed surfactant critical micellar concentration at subsolubilizing levels, whereas they remained similar to these values during saturation and solubilization of bilayers. Although the Re values increased linearly as the mole fraction of the SDS rose (X SDS ), the K parameters showed maximum values at X SDS 0.6 for K 50%CF and approximately at X SDS 0.2 for K SAT and K SOL , respectively. Thus, the lower the surfactant contribution in the surfactant/lipid system, the higher the X SDS at which the maximum bilayer/water partitioning of added mixed surfactant systems occurred. As a consequence, the influence of SDS in this partition appears to be more significant at the sublytic level (monomeric effect), whereas the influence of NP(EO) 30 seems to be greater during saturation and solubilization of liposomes via formation of mixed micelles. JAOCS 74, 9-17 (1997). KEY WORDS: Carboxyfluorescein release, partition coefficients, permeability alterations and bilayer solubilization, phosphatidylcholine liposomes, sodium dodecyl sulfate/nonylphenol oxyethylenated [NP(EO) 30 ] mixtures, static light-scattering, surfactant/phospholipid molar ratios.The interaction of sodium dodecyl sulfate (SDS) with skin induces structural changes in the epidermal surfaces (1-3) and in the stratum corneum transcutaneous permeability barrier (4,5). Mixtures of this anionic surfactant with oxyethylenated nonylphenols of different oxyethylenation levels in aqueous solution show negative deviation from ideal solution behavior (6-10). These mixtures also exhibit changes in the surface properties that improve the wetting ability of water on hydrophobic surfaces (11,12) and the salinity tolerance with regard to that of the anionic component (13). The change in the physico-chemical properties of mixed micelles and their additional stability arises from the charge separation of the ionic head groups, which affects the mean aggregation numbers of these micelles (8,14).A number of investigations have been devoted to the understanding of the principles that govern the interaction of SDS with simplified membrane models, such as phospholipid or stratum corneum lipid bilayers, when this surfactant interact...

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Interactions between betaine-type zwitterionic and anionic surfactants in mixed micelles

Cited by 91 publications

References 0 publications

Thermodynamics, size, and dynamics of zwitterionic dodecylphosphocholine and anionic sodium dodecyl sulfate mixed micelles

Thermodynamics, size, and dynamics of zwitterionic dodecylphosphocholine and anionic sodium dodecyl sulfate mixed micelles

Physicochemical Properties of Novel Phosphobetaine Zwitterionic Surfactants and Mixed Systems with an Anionic Surfactant

Changes in phospholipid bilayers caused by sodium dodecyl sulfate/nonionic surfactant mixtures

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