A new technique for determining critical micelle concentrations of surfactants and oil dispersants via UV absorbance of pyrene
详细信息 查看全文
- 作者：Jie Fua ; Zhengqing Caia ; Yanyan Gonga ; S.E. O&rsquo ; Reillyb ; Xiaodi Haoc ; Dongye Zhaoa ; c ; zhaodon@auburn.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Critical micelle concentration ; Surfactants ; Dispersants ; Oil spill ; Red shift ; UV spectra ; Micelle
- 刊名：Colloids and Surfaces A: Physicochemical and Engineering Aspects
- 出版年：2015
- 出版时间：5 November 2015
- 年：2015
- 卷：484
- 期：Complete
- 页码：1-8
- 全文大小：1365 K
文摘
- •
A more robust UV-based method is proposed for measuring CMCs with pyrene as a probe.
- •
The new method overcomes the limitation of baseline fluctuation of the UV-spectra.
- •
Red shift of the maximum UV absorbance of pyrene indicates formation of micelles.
- •
Maximum measurable peak difference is a reliable parameter to determine CMC.
- •
A UV-based method is used to calculate the pyrene/surfactant ratio in micelles.