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New amphoteric surfactants containing a 2‐hydroxyalkyl group: I preparation and properties of N‐(2‐hydroxyethyl)‐N‐(2‐hydroxyalkyl)‐β‐alanines
Author(s) -
Takai M.,
Hidaka H.,
Moriya M.
Publication year - 1979
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02680197
Subject(s) - saponification , ethylene oxide , chemistry , solubility , micelle , polymer chemistry , critical micelle concentration , infrared spectroscopy , surface tension , organic chemistry , aqueous solution , polymer , copolymer , physics , quantum mechanics
A series of new amphoteric surfactants, sodium salts of N‐(2‐hydroxyethyl)‐N‐(2‐hydroxyalkyl)‐β‐alanines (Na‐HAA) was prepared by adding methyl acrylate to N‐(2‐hydroxyalkyl)‐ethanolamine and subsequent saponification. Neutralization with HCl gave N‐(2‐hydroxyethyl)‐N‐(2‐hydroxyalkyl)‐β‐alanines, and the addition of ethylene oxide to Na‐HAA gave oxyethylated drivatives. The structures of these compounds prepared were confirmed by infrared spectra, proton magnetic resonance spectra, elementary analyses, etc. Solubility in water, surface tension, foaming power, and critical micelle concentration were determined.