SELF-ASSOCIATION OF SODIUM DODECANOATE (SDoD) AND SODIUM DECANOATE (SDeC) WITH THE HYDROPHOBICALLY MODIFIED POLYMER ETHYL(HYDROXYETHYL) CELLULOSE (EHEC)

被引：1
|
作者：
Dal-Bo, Alexandre G. [1 ]
Laus, Rogerio [1 ]
Minatti, Edson [1 ]
机构：
[1] Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, Brazil
来源：
QUIMICA NOVA | 2011年 / 34卷 / 06期
关键词：
ethyl(hydroxyethyl)cellulose (EHEC); polymer-surfactant interaction; anionic surfactants; SEMIDILUTE AQUEOUS MIXTURES; STEADY-STATE FLUORESCENCE; BOVINE SERUM-ALBUMIN; POLY(ETHYLENE OXIDE); DODECYL-SULFATE; ELECTRICAL-CONDUCTIVITY; SURFACE-TENSION; SURFACTANT/POLYMER ASSEMBLIES; ANIONIC SURFACTANTS; PHYSICAL-PROPERTIES;
D O I：
10.1590/S0100-40422011000600017
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
SELF-ASSOCIATION OF SODIUM DODECANOATE (SDoD) AND SODIUM DECANOATE (SDeC) WITH THE HYDROPHOBICALLY MODIFIED POLYMER ETHYL(HYDROXYETHYL) CELLULOSE (EHEC). In this work, the interactions between the non-ionic polymer of ethyl(hydroxyethyl) cellulose (EHEC) and mixed anionic surfactant sodium dodecanoate (SDoD)-sodium decanoate (SDeC) in aqueous media, at pH 9.2 (20 mM borate/NaOH buffer) were investigated by electric conductivity and light transmittance measurements at 25 degrees C. The parameters of the surfactant to polymer association processes such as the critical aggregation concentration and saturation of the polymer by surfactants were determined from plots of specific conductivity vs total surfactant concentration, [surfactant](tot) = [SDoD] + [SDeC]. Through the results was not observed a specific link of polymer with the surfactant, implying therefore a phenomenon only cooperative association.
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页码：1001 / 1006
页数：6
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