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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 52, Number 2
JKCSEZ 52(2)
April 20, 2008 

 
Title
Effects of Butanol Isomers on the Mixed Micellization of TTAB/Brij 35 Mixed Surfactant Systems

TTAB/Brij 35 혼합계면활성제의 미셀화에 미치는 부탄올 이성질체들의 효과
Author
Han-Nae Gil, Byung-Hwan Lee*

길한내, 이병환*
Keywords
TTAB, Brij35, 임계미셀농도, 반대이온결합상수, 비이상적 혼합미셀모델 , TTAB, Brij 35, Critical Micelle Concentration, Counter Ion Binding Constant, Non Ideal Mixed Micellar Model
Abstract
25℃의 순수 물 및 부탄올 이성질체의 수용액에서 양이온 계면활성제인 trimethyltetradecylammonium bromide(TTAB)와 비이온 계면활성제인 polyoxyethylene(23) lauryl ether(Brij 35)로 이루어진 혼합계면활성제의 임계미셀농도(CMC)와 반대이온의 결합상수값(B)을 TTAB의 겉보기 몰분율(α1)의 함수로서 전도도법과 표면장 력계법으로 측정하였다. 이와 같이 측정한 CMC 값에 비이상적 혼합미셀화 모델을 적용함으로써 여러 가지 열 역학적 함수값(Xi, γi, Ci, aiM, β 및 △Hmix)들을 계산하고 분석하였다. TTAB/Brij 35 혼합계면활성제의 미셀화에 미치는 부탄올 이성질체의 효과는 n-부탄올>iso-부탄올>tert-부탄올>물 크기순으로 나타났다.

The critical micelle concentration (CMC) and the counter ion binding constant (B) in a mixed micellar state of the trimethyltetradecylammonium bromide (TTAB) with the polyoxyethylene (23) lauryl ether (Brij 35) at 25 oC in water and in aqueous solutions of butanol isomers were determined as a function of α1 (the overall mole fraction of TTAB) by the use of electric conductivity method and surface tensiometer method. Various thermodynamic parameters (Xi, γi, Ci, aiM, β and △Hmix) were calculated by means of the equations derived from the nonideal mixed micellar model. The results say that the effects of butanol isomers on the micellization of TTAB/Brij 35 mixtures have been in the order of n-butanol>iso-butanol>t-butanol> water.

Page
111 - 117
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