Aqueous solution thickening of amino acid‐based surfactant by alkylpyrrolidone

Liu, Xuemin; Wu, Ke; Song, Weili; Lei, Qiuyun; Zhang, Hui; Pan, Jiajia; Ge, Xin

doi:10.1002/jsde.12544

Cited by 2 publications

(2 citation statements)

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“…Here, ULS is the most difficult amino acid-based surfactant to be thickened due to its “big head”, the hydrophilic moiety, that leads to a low packing parameter, especially in alkaline condition. Actually, the thickening issue of the amino acid-based surfactant is a hotspot in the industry. ,,– Among these replacements, most curves retained the parabolic behavior, although the vertex temperature varied within the 5–15 °C range. This offers multiple possibilities to modulate the formula.…”

Section: Resultsmentioning

confidence: 99%

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Parabolic Viscosity Behavior of NaCl-Thickened Surfactant Systems upon Temperature Change

Jin,

Wu,

Shi

et al. 2023

ACS Omega

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The viscosity of household care products plays an important role in pleasant delivery using consumer experience at home. A novel solution to mitigate the sharp rising of viscosities at low temperatures of detergents was proposed. By designing the formulation of the surfactant blend, formulators can achieve acceptable viscosity profiles in the temperature range encountered in daily life. The verification and modulation of formulas bearing parabolic viscosity–temperature behavior were systematically studied, including in single, binary, and ternary systems, based on the modulation of sodium ethoxylated alkyl sulfate (AES) by other anions, zwitterions, and nonions. The R ratio theory was used to have a better understanding of the molecular assembly of surfactants behind the parabolic behavior exhibited in rheology analyses. One of the key findings is that the parabolic viscosity–temperature phenomenon could be easily observed in the highly hydrated ethoxylated anionic systems like AES-based systems. For those anions lacking ethoxylation, especially sodium linear alkylbenzene sulfonate (LAS), the monotonic variation of hydration affinity with temperature led to the disappearance of parabola in the observed temperature window (>0 °C). Moreover, salinity played an important role in the hydration affinity of the polar group and the interaction between the hydrophilic headgroups. A balanced salinity should be optimized to modulate the hydration affinity in a desired range so that the parabola could be easily tuned within the target temperature region. These findings provide opportunities for the formulators in the household care industry to design products with better pourability through carefully selecting a combination of surfactants and fine-tuning their ratios to improve consumer use experience, especially in winter.

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Section: Resultsmentioning

confidence: 99%

“…Actually, the thickening issue of the amino acid-based surfactant is a hotspot in the industry. 40 , 43 , 47 – 49 Among these replacements, most curves retained the parabolic behavior, although the vertex temperature varied within the 5–15 °C range. This offers multiple possibilities to modulate the formula.…”

Section: Resultsmentioning

confidence: 99%