Abstract
The use of calcium-resistant surfactants in household and industrial washing applications may simplify the formulation composition of laundry and therefore reduce costs. A series of bio-based surfactants, N-alkyl furfuryl methylamine sulfonates (AFMS), was developed from the biomass-derived furfural and aliphatic amines by a simple and effective method. The structure of these bio-based surfactants was characterized by gas chromatography–mass spectrometry, liquid chromatography–mass spectrometry and 1H nuclear magnetic resonance spectroscopy. These bio-based surfactants demonstrated low surface tension, high emulsification, and high decontamination efficiency. Meanwhile, the AFMS surfactants exhibited excellent calcium resistance, maintaining micelle stability in Ca2+up to 2.16 × 104 mg/L and the solution clarification in Ca2+up to 7.21 × 104 mg/L. Furthermore, the AFMS surfactants had a stable decontamination effect in hard water. The wetting ability, foaming ability, toxicity, and biodegradability parameters were also evaluated. Therefore, the AFMS surfactants synthesized in this work could be applied as a more efficient and promising bio-based surfactant candidate for application in household and industrial washing.
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