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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 41, Number 6
JKCSEZ 41(6)
December 20, 1997

Title	Mixed Micellar Properties of Cetylpyridinium Chloride(CPC) with Triton X-100(TX-100) in Aqueous Solutions of n-Alcohols n-알코올 수용액에서Cetylpyridinium Chloride(CPC)와 Triton X-100(TX-100)의 혼합미셀화에 대한 연구
Author	Jong-Jae Chung, Yung-Cheol Kim, Byung-Hwan Lee 정종재,김영철,이병환
Keywords
Abstract	양이온성 계면활성제인 Cetylpyridinium Chloride(CPC)와 비이온성 계면활성제인 Triton X-100(TX-100)의 혼합계면활성제가 n-알코올(메탄올, 에탄올, 1-프로판올, 1-부탄올 및 1-펜탄올)수용액에서 나타내는 임계미셀농도값(CMC)을 20℃에서 UV 분광광도법으로 측정하였다. 이들 CMC값들로부터 여러 가지 열역학 함수값들을 유사상태분리모델(pseudo-phase separation model)을 이용한 식에 의해 계산하였으며 그 값들을 상호 비교하였다. 그 결과 n-알코올들을 첨가한 CPC/TX-100 혼합계면활성제의 미셀화는 비이상적 혼합미셀모델과 잘 일치하였으며, 이상적 혼합미셀모델과는 음의 벗어남을 보였다. The critical micelle concentrations(CMC*) of a cationic surfactant cetylpyridinium chloride (CPC) and a nonionic surfactant triton X-100(TX-100) in aqueous solutions of n-alcohols(methanol, ethanol, 1-propanol, 1-butanol and 1-pentanol) were determined by UV spectroscopic method at 25 ℃. The various thermodynamic values in 0.1 M n-alcohols were calculated by means of the equation derived from the pseudo-phase separation model and compared with the values in the absence of n-alcohols. The results were a good agreement with the nonideal mixed micelle model, and they showed negative deviation from the ideal behavior.
Page	284 - 291
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