Small Angle Neutron Scattering and Viscosity Measurements on Silicone, Ionic, and Nonionic Surfactant Mixed Systems in Aqueous Solutions

Sastry, Nandhibatla V.; Punjabi, Sanjay H.; Aswal, V. K.; Goyal, P. S.

doi:10.1080/01932691.2011.561169

Cited by 8 publications

(3 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This observation points to the fact that the mixed micelles at high concentrations consist of micelles with predominant contribution from the molecules of hydrocarbon surfactants. Our detailed small angle neutron scattering studies on comblike silicone surfactants and hydrocarbon surfactant mixtures solutions give clear evidence for a similar conclusion [17].…”

Section: Surface Tension Isothermssupporting

confidence: 67%

“…In spite of the wide usage of silicone surfactants in technically important formulations, very little is known about the micellar features in mixed systems. Hill [14] determined CMC and surface active parameters for several mixtures of nonionic silicone surfactants (based on either trisiloxanes or comb-like modified polyether poly (dimethyl siloxanes) and simple classical hydrocarbon surfactants such as SDS, DTAB and a nonionic oxyethylene dodecyl ether C 12 H 25 (EO) 17 . The CMC values of mixtures were also calculated by considering micelles as pseudophase systems and giving allowance to ideal and nonideal type of mixing following regular solution theory model.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mixed Micelles of Trisiloxane Based Silicone and Hydrocarbon Surfactants Systems in Aqueous Media: Dilute Aqueous Solution Phase Diagrams, Surface Tension Isotherms, Dilute Solution Viscosities, Critical Micelle Concentrations and Application of Regular Solution Theory

Sastry

Thummar

Punjabi³

2013

J Surfact & Detergents

View full text Add to dashboard Cite

Mixtures of trisiloxane type nonionic silicone surfactant (SS) with sodium dodecylsulfate, tetradecyltrimethylammonium bromide or tert‐octylphenol ethoxylated with 9.5 ethylene oxide groups were studied in water at 30 °C by dilute aqueous solution phase diagrams, surface tension and dilute solution viscosity methods. The cloud points for the silicone surfactant aqueous solutions increased upon addition of hydrocarbon surfactants indicating the formation of hydrophilic complexes in mixture solutions. The scrutiny of the surface tension isotherms plotted as a function of SS concentration revealed that competitive adsorption effects are the characteristic features in these mixtures depending upon the SS concentration. Otherwise the isotherms exhibited two break points and the difference of concentration between the two break points increased with the increase in SS concentration indicating the cooperative nature of interactions. The micellar mole fractions of individual surfactants were determined by Rublingh's regular solution theory; interaction parameters and activity coefficients were evaluated and interpreted in terms of synergistic type interactions in these mixtures. The surface active parameters in mixture solutions were estimated and their analysis shows that the molecular species in the mixture solutions have a preferential tendency for adsorption at the air/water interface than in association form in the bulk solution. The effect of hydrocarbon surfactants on the intrinsic viscosity of SS micelles was monitored and related to the enhanced hydration in mixed micelles.

show abstract

Section: Surface Tension Isothermssupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Mixed Micelles of Trisiloxane Based Silicone and Hydrocarbon Surfactants Systems in Aqueous Media: Dilute Aqueous Solution Phase Diagrams, Surface Tension Isotherms, Dilute Solution Viscosities, Critical Micelle Concentrations and Application of Regular Solution Theory

Sastry

Thummar

Punjabi³

2013

J Surfact & Detergents

View full text Add to dashboard Cite

show abstract

“…Surfactant Micelles in Water. The SANS distributions and their detailed analysis for anionic sodium dodecyl sulfate, cationic tetradecyltrimethylammonium bromide DTAB, and nonionic TX-100 in water have been reported elsewhere [43]. The surfactant micelles were typically prolate ellipsoidal in shape with their hydrocarbon tails occupying the interior hydrophobic core surrounded by the head groups.…”

mentioning

confidence: 99%

Effect of Surfactants on Association Characteristics of Di- and Triblock Copolymers of Oxyethylene and Oxybutylene in Aqueous Solutions: Dilute Solution Phase Diagrams, SANS, and Viscosity Measurements at Different Temperatures

Punjabi

Sastry

Aswal

et al. 2011

International Journal of Polymer Science

View full text Add to dashboard Cite

The interactions in poly(oxyethylene) (E) – poly(oxybutylene) (B) of EB or EBE type block copolymers-sodium dodoecyl sulfate (SDS) or dodecyltrimethylammonium bromide (DTAB) and/or t-octylphenoxy polyethoxyethanol, (TX-100) have been monitored as a function of surfactant concentration and temperature. The addition of ionic surfactants to copolymer micellar solutions in general induced not only shape transition from spherical to prolate ellipsoids at 30∘C in the copolymer micelles but also destabilize them and even suppress the micelle formation at high surfactant loading. DTAB destabilizes the copolymer micelles more than SDS. TX-100, being nonionic, however, forms stable mixed micelles. The block copolymer-surfactant complexes are hydrophilic in nature and are characterized by high turbid and cloud points. Triblock copolymer micelles got easily destabilized than the diblock copolymer ones, indicating the importance of the interaction between the hydrophilic E chains and surfactants. The effects of destabilization of the copolymer micelles are more dominating than the micellar growth at elevated temperatures, which is otherwise predominant in case of copolymer micelles alone.

show abstract

Effect of ethoxylation and lauryl alcohol on the self-assembly of sodium laurylsulfate: Significant structural and rheological transformation

Ade-Browne

Mirzamani

Dawn

et al. 2020

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

Small Angle Neutron Scattering and Viscosity Measurements on Silicone, Ionic, and Nonionic Surfactant Mixed Systems in Aqueous Solutions

Cited by 8 publications

References 18 publications

Mixed Micelles of Trisiloxane Based Silicone and Hydrocarbon Surfactants Systems in Aqueous Media: Dilute Aqueous Solution Phase Diagrams, Surface Tension Isotherms, Dilute Solution Viscosities, Critical Micelle Concentrations and Application of Regular Solution Theory

Mixed Micelles of Trisiloxane Based Silicone and Hydrocarbon Surfactants Systems in Aqueous Media: Dilute Aqueous Solution Phase Diagrams, Surface Tension Isotherms, Dilute Solution Viscosities, Critical Micelle Concentrations and Application of Regular Solution Theory

Effect of Surfactants on Association Characteristics of Di- and Triblock Copolymers of Oxyethylene and Oxybutylene in Aqueous Solutions: Dilute Solution Phase Diagrams, SANS, and Viscosity Measurements at Different Temperatures

Effect of ethoxylation and lauryl alcohol on the self-assembly of sodium laurylsulfate: Significant structural and rheological transformation

Contact Info

Product

Resources

About