Effect of KBr on the micellar properties of CTAB

作     者：ZHANG Weican LI Ganzuo MU Jianhai SHEN Qiang ZHENG Liqiang LIANG Haojun WU Chi 

作者机构：Key Laboratory for Colloid and Interface Chemistry of State Education MinistryShandong UniversityJinan 250100China Open Laboratory for Bond Selective ChemistryDepartment of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230027China 

出 版 物：《Chinese Science Bulletin》 (CHINESE SCIENCE BULLETIN)

年 卷 期：2000年第45卷第20期

页      面：1854-1857页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：National Natural Science Foundation of China,NSFC: 29373110 Chinese Academy of Sciences,CAS State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation 

主　　题：molar weight of micelle radius of gyration hydrodynamic radius sphere-rod transition. 

摘      要：The effect of KBr on the size, shape and microviscosity of CTAB micelles has been investigated by means of laser light scattering (LLS), 1H NMR measurements and fluorescence probe. The data obtained from the various techniques are quantitatively in agreement. The Rh of micelles in 0.01 mol ·L-1 CTAB solution increases from 3.5 nm to 43 nm and Rg increases to 89 nm with addition of KBr salt. In this process, both the microviscosity and molecular weight of micelles Mw have noticeable increases, too. The rod-like micelles are formed at 0.1 mol ·L -1 KBr and the worm-like micelles are formed at above 0.2 mol ·L-1 KBr.