Comprehensive study on critical micellar concentrations of SDS in acetonitrile–water solvents
Comprehensive study on critical micellar concentrations of SDS in acetonitrile–water solvents
复制标题
乙腈水溶剂中SDS临界胶束浓度的综合研究
DOI:
10.1002/elps.201500553
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发表时间:
2016
期刊:
影响因子:
2.9
通讯作者:
Trapp O
中科院分区:
文献类型:
--
作者:
Šteflová J;Štefl M;Walz S;Knop M;Trapp O
The CMC is one of the fundamental characteristics of surfactants and its determination is crucial for detail understanding of micelles formation. In this study the CMC of SDS in presence of ACN was determined by two independent experimental techniques, capillary electrophoresis and fluorescence correlation spectroscopy (FCS). Yet, studies of SDS micellization in solutions containing ACN as organic modifier are sparse and inconsistent in literature. The measurements were performed for various ACN contents in the range of 0–50% v/v. At ACN contents of up to 10% v/v the CMC is lower when compared to the aqueous solution, while increasing ACN content causes a significant increase of the CMC. Formation of micelles was observed up to ACN concentrations of 35% v/v, which is in contrast to most of the reports in literature. Based on the results of the FCS experiments, we were able to confirm that presence of ACN causes a gradual increase of the size of the micelles with increasing concentration of SDS. Simultaneously, we proved that the classical conductivity approach for the determination of the CMC does not yield reliable results in the presence of higher content of an organic modifier such as ACN.
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影响因子:
9.9
作者:
Anne Techen;C. Hille;C. Dosche;M. Kumke
通讯作者:
M. Kumke
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
Kabir;P. A. Koya
通讯作者:
P. A. Koya
影响因子:
2.9
作者:
A. Téllez;E. Kenndler
通讯作者:
E. Kenndler
DOI:
--
发表时间:
1959
期刊:
影响因子:
--
作者:
K. J. Mysels;L. Princen
通讯作者:
L. Princen
影响因子:
3.1
作者:
C. Lamalle;A. Servais;I. Fradi;J. Crommen;M. Fillet
通讯作者:
M. Fillet