Preparation and properties of double- or triple- chain surfactants with two sulfonate groups derived fromN- Acyldiethanolamines |
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Authors: | Yun-peng Zhu Araki Masuyama Yoh-ichi Kirito Mitsuo Okahara |
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Affiliation: | (1) Department of Applied Chemistry, Faculty of Engineering, Osaka University, 565 Osaka, Japan |
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Abstract: | Bis(sulfonate) types of amphipathic compounds with three long- chain alkyl groups were prepared by the reaction ofN- (long- chain acyl)diethanolamine diglycidyl ethers with long- chain fatty alcohols, followed by the reaction with propanesultone.
The diglycidyl ethers were easily obtained from the correspondingN- acyldiethanolamines and epichlorohydrin in the presence of a phasetransfer catalyst. The same types of compounds with two
longchain alkyl groups were also prepared from Nacetyldiethanolamine according to similar procedures. All these new double-
or triple- chain surfactants were soluble in water and showed much better micelle forming and ability to lower surface tension
than general types of single- chain surfactants with one sulfonate group. The critical micelle concentration (CMC) and γCMC values of the triple- chain compounds were still much smaller than those of the corresponding double- chain compounds with
two common alkyl groups. The efficiency of adsorption at the water/air interface (pC20) of these surfactants was very high. Their foaming properties, wetting ability toward a felt chip, and lime- soap dispersing
ability were measured.
To whom correspondence should be addressed at Department of Applied Chemistry, Faculty of Engineering, Osaka University, Yamadaoka
2-1, Suita, Osaka 565, Japan. |
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Keywords: | Double-chain surfactants Triple-chain surfactants N-acyldiethanolamine diglycidyl ethers Bis(sulfonate) compounds |
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