Sugar-based anionic surfactants:: synthesis and micelle formation of sodium methyl 2-acylamido-2-deoxy-6-O-sulfo-D-glucopyranosides

被引：16
|
作者：
Bazito, RC [1 ]
El Seoud, OA [1 ]
机构：
[1] Univ Sao Paulo, Inst Quim, BR-05513970 Sao Paulo, Brazil
来源：
CARBOHYDRATE RESEARCH | 2001年 / 332卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
sugar-based surfactants; sugar sulfates; sodium methyl 2-acylamido-2-deoxy-6-O-sulfo-D-glucopyranosides; aqueous micelles;
D O I：
10.1016/S0008-6215(01)00077-5
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The following sequence of reactions has been employed to synthesize the title anionic surfactants: [GRAPHICS] where R=C7H15; C11H23; and C15H31, respectively, and Py refers to pyridine. Aggregation of the surfactants synthesized (predominantly alpha anomers) in water was studied at 40 degreesC by conductivity measurements. Increasing the chain length of R decreases the critical micelle concentration (CMC) and the degree of counter-ion dissociation. The dependence of the Gibbs free energy of micellization and CMC on the length of R is similar to other ionic surfactants, but the head-group, i.e., the sulfated sugar moiety is less hydrophilic than the structurally related group -(OCH2-CH2)(2)-OSO3-Na+, most probably because of intermolecular H-bonding in the micellar pseudo-phase (C) 2001 Elsevier Science Ltd. All rights reserved.
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页码：95 / 102
页数：8
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