Influence of Hydrocarbon Chain Branching on Foam Properties of Olefin Sulfonate with FoamScan

Wang, Yong; Liu, Xiaochen; Zhou, Yongfeng; Niu, Jinping

doi:10.1007/s11743-016-1872-1

Cited by 13 publications

(3 citation statements)

References 23 publications

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“…Figure shows that, while the foam formed by the zwitterionic form of the branched surfactant occupies a larger volume, its stability is poorer. This is in line with the results reported for other branched surfactants (Wang et al, ), and is interpreted in terms of weaker intermolecular cohesive forces at the air/water interface among branched tails with respect to linear ones. Interestingly, data collected at pH = 3 show longer foam stability for the branched surfactant, which suggests a synergy between hydrophobic and electrostatic interactions in stabilizing the surfactant monolayer.…”

Section: Resultssupporting

confidence: 92%

“…These results are in contrast with those recently reported by Wang et al concerning anionic sulfonate surfactants (Wang et al, ), thus highlighting that the effect of tail branches on surfactant foamability is hardly predicatable from the molecular structure, being determined by a complex interplay of intermolecular interactions. On the other hand, from a phenomenological viewpoint, a lower surface tension is expected to increase the foamability of a solution from the perspective of surface energy (Wang et al, ). This is fully confirmed by our data: the increased foamability of C 10 DAO‐branched positively correlates with its higher effectiveness in reducing the surface tension (see the γ mic values).…”

Section: Resultsmentioning

confidence: 99%

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Synthesis, Surface Properties, and Self‐Aggregation Behavior of a Branched N,N‐Dimethylalkylamine Oxide Surfactant

Fabozzi

Vitiello

Krauss

et al. 2018

J Surfact & Detergents

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Amine‐oxide surfactants have emerged as highly stable, nontoxic, and cost‐effective constituents of detergent formulations, specifically as wetting agents and foam boosters. With the aim of enhancing their functional behavior, a new member of this family, N,N‐dimethyl‐2‐propylheptan‐1‐amine oxide, bearing a branched alkyl tail (C10DAO‐branched) was synthesized and purified using a simple and easily scalable strategy starting from 2‐propylheptan‐1‐ol. 2D‐nuclear magnetic resonance (NMR) and mass spectrometry confirm the obtainment of the desired product in high yield and purity. The protonation behavior of the branched surfactant is not affected by alkyl tail branching, as shown by potentiometric titrations. In contrast, surface activity and aggregation behavior of C10DAO‐branched is dramatically different from that of the linear analog N,N‐dimethyldecyl‐1‐amine oxide (C10DAO‐linear), in that it occupies a higher area at the solution interface and aggregates at much higher concentration, forming larger aggregates, as detected using tensiometry and dynamic light scattering (DLS), respectively. Aggregation behavior of C10DAO‐branched is less sensitive to pH variations. Foaming tests show that C10DAO‐branched is a more effective foam booster than its linear analog, in both acidic and basic solutions. The experimental results indicate that the branched surfactant can be used in applications that require enhanced and pH‐independent surface activity and foamability.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Synthesis, Surface Properties, and Self‐Aggregation Behavior of a Branched N,N‐Dimethylalkylamine Oxide Surfactant

Fabozzi

Vitiello

Krauss

et al. 2018

J Surfact & Detergents

View full text Add to dashboard Cite

show abstract

“…However, the rapidly formed foam also appeared to be generally unstable [16,17]. These results were further confirmed with a similar study done by Wang et al [18]. Sulek conducted an experiment to study the effects of adding APG, at two different alkyl chain lengths, to water and observing the surface activity properties [19].…”

Section: Introductionsupporting

confidence: 70%

High‐performance sulphate‐free cleansers: Surface activity, foaming and rheology

Yorke

Potanin

Jogun

et al. 2021

Intern J of Cosmetic Sci

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Objective The main objective of this paper is to analyse the composition of a sulphate‐free binary or ternary surfactant system with alkyl olefin sulfonate (AOS), alkyl polyglucoside (APG) and lauryl hydroxysultaine (Sultaine). The composition was optimized by observing critical parameters such as surface activity and rheological properties while varying the concentration of APG in a ternary system, varying the ratio of AOS and Sultaine in a binary system and studying the effect of sodium chloride addition. The experimental results can provide an alternative, sulphate‐free surfactant system to replace the common system containing sodium laureth sulfate (SLES) and cocamidopropyl betaine (CapB), without compromising on the parameters previously mentioned. Methods A DuNouy Ring was utilized on a tensiometer to measure the surface tension of the samples. To observe foaming abilities of samples, a visual foaming study was conducted and recorded by taking pictures. A TA instruments mechanical rheometer was used to measure the viscosity. Results Studying the effect of APG concentration on surface tension illustrated that as APG concentration decreases, surface tension decreases as well. The minimum surface tension was found to be 26.587 for 7.5 wt.% AOS and 7.5 wt.% Sultaine. When the ratio between AOS and Sultaine changed, the 1:1 system produced the lowest surface tension value again. As the concentration of AOS decreased in the ratio, the surface tension increased. When the ratio was held constant, and APG was introduced into the system, the systems containing APG had higher surface tension values compared with the systems with the same ratios but did not have APG added. As the concentration of salt increased, the surface tension decreased for AOS, increased for the binary mixture and had no effect on Sultaine. Foaming has a direct correlation with surface tension so a decrease in surface tension led to better foaming abilities; therefore, the 1:1 ratio of AOS:Sultaine had the best foaming qualities. The AOS/Sultaine system exhibited Maxwellian behaviour, suggesting the presence of worm‐like micellar structures. As the concentration of APG increased, the viscosity decreased and at a concentration of 2.5 wt.% AOS, 5 wt.% APG and 7.5 wt.% Sultaine, the system changed from shear thinning non‐Newtonian fluid to Newtonian. Varying the ratio of AOS:Sultaine in the binary system, showed as the ratio changed, the viscosity decreased, and at a ratio of 1:3 AOS:Sultaine, the system was primarily Newtonian. As the ratio remained constant and APG was added, the viscosity continued to decrease and the 1:3 ratio was completely Newtonian. The addition of salt had no effect on the viscosity of Sultaine, but the viscosity of AOS increased at a salt concentration of 2 wt.%. The binary mixture saw as the concentration of salt increased, the viscosity profile decreased, even though the system remained non‐Newtonian and shear thinning. Conclusion The surface activity and rheological study of the sulfate‐free surfactant systems u...

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Comparative Study on the Syntheses and Properties of Three N‐lauroyl Aromatic Amino Acid Surfactants

Yang

Zhou

Yang

et al. 2020

J Surfact & Detergents

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Three N‐lauroyl aromatic amino acid surfactants, namely, sodium N‐lauroyl phenylalaninate (SLP), sodium N‐lauroyl tyrosinate, and sodium N‐lauroyl tryptophanate (SLTr), with aromatic group structures were synthesized via methyl ester method. Mass spectrometry, Fourier transform infrared spectroscopy, and nuclear magnetic resonance were applied for the structural representation of products. A comparative study of the three surfactants in terms of surface, foam, and emulsifying properties and decontamination performance was conducted. Results demonstrated that aromatic structure significantly influenced the properties of the three surfactants. SLTr had the best surface performance and foam property, whereas SLP had the best emulsifying property. All three surfactants exhibited strong decontamination effects on protein‐soiled swatches.

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Influence of Hydrocarbon Chain Branching on Foam Properties of Olefin Sulfonate with FoamScan

Cited by 13 publications

References 23 publications

Synthesis, Surface Properties, and Self‐Aggregation Behavior of a Branched N,N‐Dimethylalkylamine Oxide Surfactant

Synthesis, Surface Properties, and Self‐Aggregation Behavior of a Branched N,N‐Dimethylalkylamine Oxide Surfactant

High‐performance sulphate‐free cleansers: Surface activity, foaming and rheology

Comparative Study on the Syntheses and Properties of Three N‐lauroyl Aromatic Amino Acid Surfactants

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