Surface-Active Amidequats with an Alkoxymethyl Substituent: Synthesis, Analysis, and Preliminary Evaluation as Potential Emulsifiers and Substitutes for Conventional Surfactants
Anna Syguda, Marta Wojcieszak, Sylwia Zięba, Adam Mizera, Andrzej Łapiński, Jacek Różański, Alicja Putowska, Agnieszka Marcinkowska, Adam Grzywaczyk, Ewa Kaczorek, Katarzyna Materna
TL;DR
This paper introduces new eco-friendly amidequat compounds with improved surface activity, showing promise as emulsifiers and surfactant alternatives in cleaning and cosmetic products.
Contribution
The study presents novel surface-active amidequats with alkoxymethyl substituents and evaluates their potential as emulsifiers and surfactant substitutes.
Findings
Amidequats with 12 carbon atoms in the alkyl chain show the highest surface and foam-forming activity.
Amidequats outperform sodium caprylate in micellization properties.
Oil-in-water and water-in-oil emulsions using amidequats were successfully prepared and analyzed.
Abstract
Amidequats have attracted considerable attention in research; however, their surface activity remains largely unknown, and their potential as emulsifiers is still unexplored. In this work, series of novel surface-active amidequats based on ecofriendly caprylic acid were synthesized and their micellization behavior in water was explored systematically. The surface tension, wettability, foamability and stability, and measurements of melting and crystallization temperatures were employed to characterize the compounds. The functionalization of amidequats containing an alkoxymethyl substituent significantly enhances micellization properties compared to the structurally analogous anionic surfactant, sodium caprylate. Moreover, for optimized molecule geometries, electrical dipole moments were determined and correlated with surface activity. Experimental and theoretical studies indicate that…
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Taxonomy
TopicsSurfactants and Colloidal Systems · Analytical Chemistry and Chromatography · Molecular spectroscopy and chirality