화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Chemical Engineering Research, Vol.45, No.3, 219-225, June, 2007
Export Citation
C12E8 비이온 계면활성제 수용액에 의한 탄화수소 오일의 가용화에 관한 연구
Solubilization of Hydrocarbon Oils by C12E8 Nonionic Surfactant Solution
임종주†
  • 동국대학교 공과대학 생명·화학공학과, 100-715 서울시 중구 필동 3-26
JongChoo Lim†
  • Department of Chemical and Biochemical Engineering, Dongguk University, 3-26, Pil-dong, Chung-gu, Seoul 100-715, Korea
E-mail:
초록
비이온 계면활성제 C12E8 수용액의 탄화수소 오일에 대한 가용화도(equilibrium solubilization capacity)를 30℃에서 기체 크로마토그래피(GC)를 이용하여 측정하였다. 탄화수소 오일의 가용화도를 실험에 사용한 계면활성제의 농도로 나눈 값으로 표시한 molar solubilization ratio(MSR)는 순수한 단일 성분의 탄화수소 오일 경우, 탄화수소 오일의 탄소수(ACN)가 증가함에 따라 거의 선형적으로 감소함을 알 수 있었다. 한편 탄화수소 오일의 이성분 시스템은 사용한 두 탄화수소 오일의 탄소수(alkane carbon number, ACN) 차이에 따라 선택적 가용화 혹은 비선택적 가용화 경향을 나타내었다. 본 연구에서 가용화도 실험을 수행한 n-octane/n-nonane과 n-nonane/n-decane 혼합물 시스템의 경우, 비선택적 (non-selective) 가용화 경향을 나타내었으며, 반면에 n-octane/n-decane 혼합물 시스템의 경우에는 선택적(selective) 가용화 경향을 따르는 것을 GC 분석 결과로부터 확인할 수 있었다.
The equilibrium solubilization capacity of pure hydrocarbon oils by 2.5 wt% C12E8 nonionic surfactant solution was measured at 30 °C by gas chromatography (GC) analysis. Experimental results indicated that the molar solubilization ratio (MSR) for pure alkanes was found to decrease almost linearly with the alkane carbon number (ACN) of the hydrocarbon oil. For the binary mixture systems of the hydrocarbon oils both selective and nonselective solubilization behaviors were observed depending on the difference in carbon number of the two hydrocarbon oils. Equilibrium solubilization tests for the two n-octane/n-nonane and n-nonane/n-decane mixture systems in C12E8 surfactant solutions suggest slightly selective solubilization in favor of n-octane, but the small difference in solubilization rates between two hydrocarbon oils does not allow ruling out non-selective solubilization for these particular systems. This is certainly not the case for the n-octane/n-decane mixture, for which selective solubilization was conclusively demonstrated by GC analysis data.
Keywords:Equilibrium Solubilization Capacity;C12E8 Nonionic Surfactant;Micelle;Hydrocarbon Oil;Selectivity
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