Electromotive force study on interaction between a triblock copolymer and cationic surfactants in water

被引：3

作者：

Li, Guobao ^{[1
,2
]}

Li, Hongguang ^{[3
]}

Hao, Jingcheng ^{[1
]}

机构：

[1] Shandong Univ, Key Lab Colloid & Interface Chem, Minist Educ, Jinan 250100, Peoples R China

[2] Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Peoples R China

[3] Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China

来源：

COLLOID AND POLYMER SCIENCE | 2013年 / 291卷 / 06期

关键词：

Electromotive force; Triblock copolymer; F127; Cationic surfactants; Binding isotherms; SODIUM DODECYL-SULFATE; PLURONIC F127 EO97PO69EO97; ABA BLOCK-COPOLYMERS; IONIC SURFACTANTS; POLY(PROPYLENE OXIDE); MICELLE FORMATION; AQUEOUS-SOLUTIONS; BINDING; MICROCALORIMETRY; MICELLIZATION;

D O I：

10.1007/s00396-012-2884-7

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：

The interaction between a poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer F127 and three cationic surfactants with varying alkyl chain length in water were investigated in detail by electromotive force (EMF) studies. The cationic surfactants investigated are hexadecyltrimethylammonium bromide (HTAB), myristytrimethylammonium bromide (MTAB), and lauryltrimethylammonium bromide (LTAB) which have carbon numbers of 16, 14, and 12 in the alkyl chain, respectively. Obvious binding was detected by EMF measurements between F127 and HTAB. For MTAB, the binding has also been detected with a weaker strength than that of HTAB. The LTAB/F127 mixed system exhibits the weakest binding, presumably due to the too short alkyl chain. This indicates that the binding between cationic surfactants and F127 is mainly dominated by the hydrophobic/hydrophobic interaction. In addition, the interaction also shows considerable dependence on the concentration of F127 and solution parameters such as the salinity.

引用

页码：1479 / 1486

页数：8

共 34 条

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