Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Mixed Micellar Properties of Cetylpyridinium Chloride(CPC) with Triton X-100(TX-100) in Aqueous Solutions of n-Alcohols

n-알코올 수용액에서 Cetylpyridinium Chloride(CPC)와 Triton X-100(TX-100)의 혼합미셀화에 대한 연구

  • Chung, Jong Jae (Department of Chemistry, College od National Sciences, Kyungpook National University) ;
  • Kim, Yung Cheol (Department of Chemistry, College od National Sciences, Kyungpook National University) ;
  • Lee, Yung Cheol (Department of Liberal Arts, Korea University of Technology and Education)
  • 정종재 (경북대학교 자연과학대학 화학과) ;
  • 김영철 (경북대학교 자연과학대학 화학과) ;
  • 이병환 (한국기술교육대학교 교양학과)
  • Published : 19970600
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Abstract

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$^{\circ}C$. 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.

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 25$^{\circ}C$에서 UV 분광광도법으로 측정하였다. 이들 $CMC^*$ 값들로부터 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.

Keywords

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