Effect of n-Butanol on the Mixed Micellization of DPC with CDEAB 


Vol. 48,  No. 3, pp. 236-0, Jun.  2004
10.5012/jkcs.2004.48.3.236


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  Abstract

25 oC의 순수 물 및 n-부탄올 수용액에서 Dodecylpyridinium chloride(DPC)와 Cetyldimethylethylammonium bromide(CDEAB)의 혼합계면활성제가 나타내는 임계마이셀농도(CMC)와 반대이온결합상수(B)값을 DPC의 겉보기몰분율(a1)에 따른 변화를 전도도법으로 측정하였다. 이와같이 측정한 CMC값에 비이상적 혼합마이셀화모델을 적용함으로써 여러 가지 열역학적 함수값(Xi, gi, Ci, aiM, b 및 DHmix)들을 계산하고 분석하였다. 그리고 DPC/CDEAB 혼합계면활성제의 마이셀화에 미치는 n-부탄올의 효과를 조사하기 위하여 n-부탄올의 농도에 따른 열역학 함수값(CMC, B 및 DGom)의 변화를 측정하고 분석하였다. The critical micelle concentration (CMC) and the counterion binding constant (B) in a mixed micellar state of the Dodecylpyridinium chloride (DPC) with the Cetyldimethylethylammonium bromide (CDEAB) at 25 oC in aqueous solutions of n-butanol were determined as a function of a1 (the overall mole fraction of DPC) by the use of electric conductivity method. Various thermodynamic parameters (Xi, gi, Ci, aiM, b, and DHmix) were calculated by means of the equations derived from the nonideal mixed micellar model. The effect of n-butanol on the mixed micellization of the DPC/CDEAB mixtures has been also studied by analyzing the measured and calculated thermodynamic parameters (CMC, B, and DGom).

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  Cite this article

[IEEE Style]

B. Lee, "Effect of n-Butanol on the Mixed Micellization of DPC with CDEAB," Journal of the Korean Chemical Society, vol. 48, no. 3, pp. 236-0, 2004. DOI: 10.5012/jkcs.2004.48.3.236.

[ACM Style]

Byung-Hwan Lee. 2004. Effect of n-Butanol on the Mixed Micellization of DPC with CDEAB. Journal of the Korean Chemical Society, 48, 3, (2004), 236-0. DOI: 10.5012/jkcs.2004.48.3.236.

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