Preparation of Novel Cationic Surfactants from Epichlorohydrin: their Surface Properties and Biological Activities

Abstract

A novel series of mono-quaternary ammonium salts was prepared by the reaction of fatty esters of methyldiethanolamine with epichlorohydrin in the presence of amine hydrochloride. The ease of the reaction with epichlorohydrin was found to be due to the assistance of amine hydrochloride in opening the epoxide ring and to neighboring-group participation by the hydroxyl group of the mono-ammonium salt in the quaternization step. The surface properties of the prepared compounds and their biological activities were measured. The prepared compounds had good water solubility and showed characteristic surface active properties.

Syntheses and surface active properties of cationic surfactants having multi ammonium and hydroxyl groups

“…The adsorption of cationic surfactants on the solid surface is very important in many industrial applications since cationic surfactants form strong adsorption layers and provide softness, soiling resistance and static protection to the surfaces [1][2][3]. A QCM-D instrument was used to measure the amount of surfactant adsorbed at the model surface of 100 nm thick silicon dioxide layer sputtered onto a quartz crystal.…”

“…Applications of cationic surfactants include softeners, cosmetic products, electron-coatings, and the stabilization of adhesive polymer latexes as well as in mining and paper manufacturing [1,2]. Since natural colloids and surfaces are predominantly negatively charged, cationic surfactants form strong adsorption layers and hydrophobize the surfaces of these materials and provide softness to the surfaces [1].…”

“…Since natural colloids and surfaces are predominantly negatively charged, cationic surfactants form strong adsorption layers and hydrophobize the surfaces of these materials and provide softness to the surfaces [1]. Fabric softeners such as esterquats, one of the most widely used cationic surfactants in laundry products, are used to improve the soft handle of textiles and to improve fiber, yarn and fabric lubricity.…”

Synthesis, Characterization and Surface‐Activity of Hydroxyethyl Group‐Containing Quaternary Ammonium Surfactants

“…From the curves, several surface parameters and energetic factor values were able to be extracted including the CMC, c cmc , P cmc , C max , A min , DG mic , and DG ads [11][12][13].…”

Synthesis and surface activities of multi-ammonium cationics derived from n-octadecyl glycidyl

“…Moreover, cationic surfactants have been in the focus of academic inter ests due to their ability to form self assembled supramolecular structures such as micelles and lyotro pic mesophases. Such aggregates exhibit sharp polarity gradients at the interface and define hydrophobic regions in aqueous solution [9][10][11][12][13].…”