Determination of critical micelle concentrations of ionic and nonionic surfactants based on relative viscosity measurements by capillary electrophoresis
學年 102
學期 2
出版（發表）日期 2014-07-01
作品名稱 Determination of critical micelle concentrations of ionic and nonionic surfactants based on relative viscosity measurements by capillary electrophoresis
作品名稱（其他語言）
著者 Wu, Chunhung; Li, Neng Jia; Chen, Kuan Cheng; Hsu, Hsiu-Fu
單位 淡江大學化學學系
出版者 Dordrecht: Springer Netherlands
著錄名稱、卷期、頁數 Research on Chemical Intermediates 40(6), pp.2371–2379
摘要 The critical micelle concentration (CMC) can be obtained by measuring the distinct physical properties of surfactant molecules in the monomeric and micellar states. In this study, two linear increments of relative viscosity with distinct slopes were obtained when increasing surfactant concentrations from dilute solution to above the CMC, which was then determined by the intersection of the two linear extrapolations. Using a capillary electrophoresis (CE) instrument and Poiseuille’s law, the viscosities of surfactants at a series of concentrations covering the monomeric and micellar regions could be obtained by measuring the hydrodynamic flow rates of the corresponding surfactant solutions. We applied this method to determine the CMC values of various types of surfactants including anionic, cationic, zwitterionic, and nonionic surfactants. The resulting CMC values were all in good agreement with those reported in literature. Using this method, the multiple-stage micellization process of a short-chain surfactant was revealed. We have also demonstrated that the CE-based viscometer was applicable to the study of CMC variation caused by organic or electrolyte additives.
關鍵字 Critical micelle concentration; Surfactant; Capillary electrophoresis; Relative viscosity
語言 en_US
ISSN 0922-6168
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Wu, Chunhung
審稿制度 是
國別 NLD
公開徵稿
出版型式 紙本
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