Physicochemical properties of anionic triple-chain surfactants in alkaline solutions

Yoshimura, Tomokazu; Esumi, Kunio

doi:10.1016/j.jcis.2004.03.069

Cited by 34 publications

(20 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…OTG molecules easily form large aggregates in water, whereas they tend to form micelles with a smaller size in 40% water-EG solutions. Larger and negative A 2 values, thus meaning a strong and attractive inter-surfactant interaction, result in the formation of micelles with larger aggregation numbers [81]. …”

Section: Resultsmentioning

confidence: 99%

Self-Assembly, Surface Activity and Structure of n-Octyl-β-D-thioglucopyranoside in Ethylene Glycol-Water Mixtures

Ruiz

Molina-Bolı́var

Hierrezuelo

et al. 2013

IJMS

View full text Add to dashboard Cite

The effect of the addition of ethylene glycol (EG) on the interfacial adsorption and micellar properties of the alkylglucoside surfactant n-octyl-β-d-thioglucopyranoside (OTG) has been investigated. Critical micelle concentrations (cmc) upon EG addition were obtained by both surface tension measurements and the pyrene 1:3 ratio method. A systematic increase in the cmc induced by the presence of the co-solvent was observed. This behavior was attributed to a reduction in the cohesive energy of the mixed solvent with respect to pure water, which favors an increase in the solubility of the surfactant with EG content. Static light scattering measurements revealed a decrease in the mean aggregation number of the OTG micelles with EG addition. Moreover, dynamic light scattering data showed that the effect of the surfactant concentration on micellar size is also controlled by the content of the co-solvent in the system. Finally, the effect of EG addition on the microstructure of OTG micelles was investigated using the hydrophobic probe Coumarin 153 (C153). Time-resolved fluorescence anisotropy decay curves of the probe solubilized in micelles were analyzed using the two-step model. The results indicate a slight reduction of the average reorientation time of the probe molecule with increasing EG in the mixed solvent system, thereby suggesting a lesser compactness induced by the presence of the co-solvent.

show abstract

Section: Resultsmentioning

confidence: 99%

Self-Assembly, Surface Activity and Structure of n-Octyl-β-D-thioglucopyranoside in Ethylene Glycol-Water Mixtures

Ruiz

Molina-Bolı́var

Hierrezuelo

et al. 2013

IJMS

View full text Add to dashboard Cite

show abstract

“…The fluorescence spectra of the solutions were recorded at room temperature using an Aminco‐Bowman Series 2 Luminescence Spectrometer (SLM‐Aminco, Northampton, MA, USA) and a 1 × 1 cm cuvette; the excitation wavelength was 335 nm and the emission was measured between 350 and 450 nm (Yoshimura and Esumi, ). The pyrene solutions were prepared by evaporating the solvent from 10 −4 M ethanolic pyrene (0.1 mL), adding a product solution (0.005%, 10 mL), and then sonicating the solutions for 15 min in an ultrasonic bath.…”

Section: Methodsmentioning

confidence: 99%

Surface Properties of Glucose‐Based Surfactants and Their Application in Textile Dyeing with Natural Dyes

Lin

Chu

Chen

et al. 2018

J Surfact & Detergents

View full text Add to dashboard Cite

In this study, propylene glycol‐based glycosides were obtained using an acetalization reaction in which glucose was first reacted with propylene glycol. Subsequently, the propylene glycol glycoside was reacted with alkyl glycidyl ether of varying carbon chain lengths (i.e., 08‐G, 10‐G, 12‐G, 14‐G, and 16‐G) to synthesize a series of glucose‐based biodegradable surfactants. The experimental results show that the surface activity of the C8–C12 glucose‐based surfactants increases with the carbon chain length. However, the surface activity of the C14–C16 glucose‐based surfactants decreased as the carbon chain length increased. Among all the surfactants, the C12 glucose‐based surfactant exhibited the most efficient emulsification ability, lowest surface tension, lowest fluorescence intensity, highest zeta potential, and good emulsification stability. The glucose‐based surfactants were used as additives in natural plant dyes made from turmeric or henna to dye wool fabrics. Higher color strengths were observed in the C14 glucose‐based surfactant.

show abstract

“…In case of B 2 * r À6, the Vliegenthart-Lekkerkerker (VL) criterion 37 states that colloidal gas-liquid phase separation of the micellar dispersion is expected. Even though this B 2 -value is in principle experimentally resolvable, [38][39][40][41][42] there are many practical difficulties related to measuring B 2 . Thus, direct visual observation of the (in)stability of the ACPM serve here as a pragmatic confirmation of theoretical predictions made.…”

Section: Introductionmentioning

confidence: 99%

(Homo)polymer-mediated colloidal stability of micellar solutions

et al. 2020

View full text Add to dashboard Cite

Despite their wide range of applications, there is a remarkable lack of fundamental understanding about how micelles respond to other components in solution. The colloidal stability of micellar solutions in presence of (homo)polymers is investigated here following a theoretical bottom-up approach.A polymer-mediated micelle-micelle interaction is extracted from changes in the micelle-unimer equilibrium as a function of the inter-micelle distance. The homopolymer-mediated diblock copolymer micelle-micelle interaction is studied both for depletion and adsorption of the homopolymer. The fluffy nature of the solvophilic domain (corona) of the micelle weakens the depletion-induced destabilization.Accumulation of polymers into the corona induces bridging attraction between micelles. In fact, both depletion and adsorption phenomena are regulated by the coronal thickness relative to the size of the added polymer. Penetration of guest compounds into the coronal domain of crew-cut micelles, with a narrower yet denser corona, is less pronounced as for starlike micelles (with a more diffuse corona).Therefore, crew-cut micelles are less sensitive to the effect of added compounds, and hence more suitable for applications in multicomponent systems, such as industrial formulations or biological fluids.The trends observed for the colloidal stability of crew-cut micelles qualitatively match with our experimental observations on aqueous dispersions of polycaprolactone-polyethylene glycol (PCL-PEO) micellar suspensions with added PEO chains.

show abstract

Physicochemical properties of anionic triple-chain surfactants in alkaline solutions

Cited by 34 publications

References 22 publications

Self-Assembly, Surface Activity and Structure of n-Octyl-β-D-thioglucopyranoside in Ethylene Glycol-Water Mixtures

Self-Assembly, Surface Activity and Structure of n-Octyl-β-D-thioglucopyranoside in Ethylene Glycol-Water Mixtures

Surface Properties of Glucose‐Based Surfactants and Their Application in Textile Dyeing with Natural Dyes

(Homo)polymer-mediated colloidal stability of micellar solutions

Contact Info

Product

Resources

About