Adsorption equilibrium and dynamic surface tension of alkyl polyglucosides and their mixed surfactant systems with CTAB and SDS in the surface of aqueous solutions

Chai, Jingchao; Cui, Xi-Yun; Zhang, X.Y.; Song, Miaomiao; Wang, J.; Lu, Jianjun

doi:10.1016/j.molliq.2018.05.055

Cited by 25 publications

(11 citation statements)

References 46 publications

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“…An explanation for this interaction is that APG is disrupting, rising to the air water interface and acts as a competitive surfactant instead of an enhancing surfactant. Chai et al discusses, when the concentration of APG is large, the amount of APG molecules adsorbed by the surface is larger, which may give reasoning for competitive adsorption [28]. Similar results were found in Sulek's surface tension experiment of APG which determines that APG forms a surface phase that differs from the bulk phase [19].…”

Section: Resultsmentioning

confidence: 64%

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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Section: Resultsmentioning

confidence: 64%

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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“…In this study, SDS and APG1214 were selected for preparing the SDS and APG1214 solution, considering the economy, environmental protection, and secondary dust. − Materials Studio software was used to reveal the wetting mechanism of the SDS and APG1214 solution on bituminous coal, which can explain some phenomena and mechanisms on the atomic structure and microlevel, which cannot be observed in experiments. − The distribution of tail group C, head group S, and O in the waterSDS and APG1214bituminous coal system, the number of intermolecular hydrogen bonds, and the interaction energy of the water–SDS and APG1214–bituminous coal system and the water–bituminous coal system were obtained. Through experimental research, the surface tension, contact angle, and wetting time of SDS and APG1214 solutions at different concentrations and mass ratios were identified.…”

Section: Introductionmentioning

confidence: 99%

Wetting Mechanism and Experimental Study of Synergistic Wetting of Bituminous Coal with SDS and APG1214

Sun

Jing

et al. 2021

ACS Omega

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To solve the problem of poor dust wettability during coal mine dust treatment, sodium dodecyl sulfate (SDS) and alkyl glycoside (APG1214) were selected for compounding. An efficient, environmentally friendly, economical wetting agent was prepared. First, through molecular dynamics simulation studies, it was determined that the tail group C of SDS and APG1214 was adsorbed on the surface of bituminous coal, and the head groups S and O were adsorbed on the surface of water. The simulation result is found to be consistent with the surfactant solution dust removal theory, which proves the confidence of simulation. Then, by comparing the interaction of water–SDS and APG1214–bituminous coal and water–bituminous coal systems and the number of hydrogen bonds, the wetting mechanism of the SDS and APG1214 solution on bituminous coal was revealed. Finally, the surface tension, contact angle, and wetting time of different SDS and APG1214 solutions were determined by experiments and they decreased with decreasing mass fraction of SDS at the same concentration. The surface tension of the SDS and APG1214 solution and the number of micelles affected the wettability of bituminous coal. The optimal concentration of the SDS and APG1214 solution was 0.7%, and the optimal ratio was SDS/APG1214 = 1:3.

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“…While a balanced rate of surface tension reduction is critical for some applications, others need both balanced as well as dynamic reductions in surface tension. Surfactant efficiency in lowering equilibrium surface tension is not always related to surfactant efficiency in lowering dynamic surface tension [ 19 ]. Because the properties of the interface are modified by surfactants as they adsorb, it is more important to study the dynamic surface tension in comparison to the study of equilibrium surface tension when it comes to the practical applications of surfactants.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Performance of Double-Chain Quaternary Ammonium Salt Glucosamide Surfactants

et al. 2022

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A series of double-chain quaternary ammonium salt surfactants N-[N′[3-(gluconamide)] propyl-N′-alkyl]propyl-N, N-dimethyl-N-alkyl ammonium bromide (CnDDGPB, where n represents a hydrocarbon chain length of 8, 10, 12, 14 and 16) were successfully synthesized from D (+)-glucose δ-lactone, N, N-dimethyldipropylenetriamine, and bromoalkane using a two-step method consisting of a proamine-ester reaction and postquaternization. Their surface activity, adsorption, and aggregation behavior in aqueous solution were investigated via measurements of dynamic/static surface tension, contact angle, dynamic light scattering, and transmission electron microscopy. An analysis of their application performance in terms of wettability, emulsifying properties, toxicity, and antibacterial properties was conducted. The results show that with increasing the carbon chain length of the CnDDGPB surfactants, their critical micelle concentration (CMC) increased and the pC20 and efficiency in the interface adsorption of the target product gradually decreased. Moreover, the influence of the hydrophobic carbon chain length on the surface of polytetrafluoroethylene (PTFE) was even greater for the wetting effect, reducing the contact angle to 32° within the length range of C8–C14. The results of the contact angle change and the wettability experiments proved that C10DDGPB exhibited the best wettability. The liquid paraffin and soybean oil emulsification ability of CnDDGPB showed an upward trend followed by a downward trend with the growth of the carbon chain, with C12DDGPB exhibiting the best emulsification performance. The Dlong/Dshort ratio was far lower than 1, which indicates mixed-kinetic adsorption. The surfactants formed spherical micelles and showed a unique aggregation behavior in aqueous solution, which showed an increase–decrease–increase trend with the change in concentration. A cell toxicity and acute oral toxicity experiment showed that the CnDDGPB surfactants were less toxic than the commonly used surfactant dodecyldimethylbenzyl ammonium chloride (1227). In addition, at a concentration of 150 ppm, CnDDGPB exhibited the same bacteriostatic effect as 1227 at a concentration of 100 ppm. The results demonstrate that sugar-based amide cationic surfactants are promising as environmentally friendly disinfection products.

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Adsorption equilibrium and dynamic surface tension of alkyl polyglucosides and their mixed surfactant systems with CTAB and SDS in the surface of aqueous solutions

Cited by 25 publications

References 46 publications

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

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

Wetting Mechanism and Experimental Study of Synergistic Wetting of Bituminous Coal with SDS and APG1214

Synthesis and Performance of Double-Chain Quaternary Ammonium Salt Glucosamide Surfactants

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