Determination of the Second Critical Micelle Concentration of CTAB by UV Spectra without Probe

Acta Chimica Sinica ›› 2006, Vol. 64 ›› Issue (24): 2437-2441. Previous Articles Next Articles

Original Articles

无探针紫外光谱法测定CTAB的第二临界胶束浓度

卢惠娟, 陈冲, 郭宏涛, 周晓海*, 董金凤, 洪昕林, 李学丰, 张高勇

(武汉大学化学与分子科学学院武汉 430072)

投稿日期:2006-01-10 修回日期:2006-03-23 发布日期:2006-12-28
通讯作者: 周晓海

Determination of the Second Critical Micelle Concentration of CTAB by UV Spectra without Probe

LU Hui-Juan; CHEN Chong; GUO Hong-Tao; ZHOU Xiao-Hai*; DONG Jin-Feng; HONG Xin-Lin; LI Xue-Feng; ZHANG Gao-Yong

(College of Chemisty and Molecular Science, Wuhan University, Wuhan 430072)

Received:2006-01-10 Revised:2006-03-23 Published:2006-12-28
Contact: ZHOU Xiao-Hai

Abstract

In this article, ultraviolet absorption spectra (UV) without probe were used to determine the first and second critical micelle concentration (CMC) of cetyltrimethylammonium bromide (CTAB), and the transformation of congeries at the CMC were detected by ¹H NMR spectra and dynamic light scattering, which just tested and verified the feasibility of using UV spectra without probe to determine the second CMC of the aqueous solution of CTAB. Furthermore, UV spectral method was also used to investigate the CTAB/KBr system, and it was confirmed that the formation of CTAB wormlike micelle could be induced by the aqueous solution of KBr.

Key words: CMC, UV, CTAB, dynamic light scattering, ¹H NMR

Cite this article

LU Hui-Juan; CHEN Chong; GUO Hong-Tao; ZHOU Xiao-Hai*; DONG Jin-Feng; HONG Xin-Lin; LI Xue-Feng; ZHANG Gao-Yong. Determination of the Second Critical Micelle Concentration of CTAB by UV Spectra without Probe[J]. Acta Chimica Sinica, 2006, 64(24): 2437-2441.

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无探针紫外光谱法测定CTAB的第二临界胶束浓度

Determination of the Second Critical Micelle Concentration of CTAB by UV Spectra without Probe

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