Oxypropylene chain length affects the physicochemical properties of ortho ester-based gemini surfactants

被引：6
作者：
Lin, Li-Huei [1 ]
Ye, Yu-Wun [2 ]
Chen, Keng-Ming [3 ]
机构：
[1] Vanung Univ, Dept Cosmet Sci, Chungli, Taiwan
[2] Vanung Univ, Grad Inst Mat Sci, Chungli, Taiwan
[3] Natl Taiwan Univ Sci & Technol, Dept Polymer Engn, Taipei, Taiwan
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2013年 / 416卷
关键词：
Ortho ester-based gemini surfactant; Surface activity; Critical micelle concentration; Emulsion; ACTIVE PROPERTIES; AQUEOUS-SOLUTION; MICELLIZATION PROPERTIES; AGGREGATION PROPERTIES; NONIONIC SURFACTANTS; SPACER CHAIN; ACID; EMULSIFICATION; SOLUBILIZATION; FLUORESCENCE;
D O I：
10.1016/j.colsurfa.2012.10.023
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study, we synthesized ortho ester-based surfactants, with oxypropylene chain lengths from 1 to 3000, from a short-chain ortho ester, propylene glycol, and polyoxyethylene stearyl ether. We subsequently reacted these ortho ester surfactants with propylene glycol as a spacer to yield gemini surfactants. We characterized the surface activities of each of these gemini surfactants in terms of its critical micelle concentration (CMC), surface excess concentration (Gamma(CMC)), surface area demand per molecule (A(CMC)), surface tension at the CMC (gamma(CMC)), and standard free energy of micellization per mole of monomer unit (Delta G(m)). Increasing the oxypropylene chain length had a significant influence on the surface activity. Overall, these ortho ester-based gemini surfactants possess excellent surface properties, providing low contact angles and emulsion stability. (C) 2012 Elsevier B.V. All rights reserved.
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页码：1 / 8
页数：8
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