Production and Application of the Langmuir Aggregates of Eosine with Cetyl Trimethyl Ammonium Bromide期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Production and Application of the Langmuir Aggregates of Eosine with Cetyl Trimethyl Ammonium Bromide

Authors:	H‐W Gao M‐L Ye J‐Z Ge T‐J Wang

Institution:	(1) College of Chemical Engineering, University of Technology of the Zhegiang Province, Hangzhou, 310014, China;(2) Pharmaceutical Company Zhezjang Konba, China;(3) Anhui University, China

Abstract:	The procedure of microphase adsorption–spectral correction is applied to the interaction of eosine Y (EO) to the micelles of cetyl trimethyl ammonium bromide (CTAB). The Langmuir aggregation of EO on CTAB occurs owing to microelectrostatic attraction. The results have shown that at pH 3.8, monomeric and micellar aggregates have the structure EO₅·CTAB₂ and (EO₅·CTAB₂)₃₉. The adsorption constant of an aggregate is 7.01·10⁵, its molar absorption coefficient is = 8.8·10⁴ liters·mole^–1·cm^–1 at 550 nm. Application of the aggregation of EO on CTAB gives satisfactory results for quantitative determination of cation surfaceactive agents (surfactants).

Keywords:	procedure of microphase adsorption– spectral correction Langmuir isothermal adsorption cetyl trimethyl ammonium bromide eosine Y
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