Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Study on the Solubilization of 4-ethylaniline in the aqueous solutions of mixed surfactants

혼합계면활성제의 수용액에서 4-ethylaniline의 가용화에 관한 연구

  • Lee, Dong-Cheol (Department of Applied Chemical Engineering, Korea University of Tech. & Education) ;
  • Lee, Byung-Hwan (Department of Applied Chemical Engineering, Korea University of Tech. & Education)
  • 이동철 (한국기술교육대학교 응용화학공학과) ;
  • 이병환 (한국기술교육대학교 응용화학공학과)
  • Received : 2020.05.14
  • Accepted : 2020.06.19
  • Published : 2020.06.30
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Abstract

The critical micelle concentration (CMC) values of the mixed surfactant systems and the solubilization conatant (Ks) values of 4-ethylaniline in those solutions were measured and analyzed by the UV-Vis method. As a result, the mixed surfactant systems of TTAB/LSB and TTAB/TX-100 did not deviate significantly from ideal mixed micellization. However, the mixed systems of SDS/LSB and SDS/TX-100 showed great negative deviations from ideal mixed model. These differences showed that the intensity of the interaction between two components in the mixed micelle was different for each mixed system and that these differences greatly influenced the solubilization of 4-ethylaniline by a mixed surfactant system. Among pure surfactants, an anionic surfactant such as SDS showed a greater Ks value than other ionic surfactants, and the Ks value by each surfactant system decreased in the order of SDS≫TTAB≧LSB>TX-100. In addition, the Ks values of all the mixed surfactant systems were higher than those of the pure surfactants constituting the mixed systems.

혼합계면활성제들의 임계미셀농도(CMC)값과 그 용액에서 4-ethylaniline의 가용화상수(Ks) 값을 UV-Vis법으로 측정하고 분석하였다. 그 결과 TTAB/LSB와 TTAB/TX-100 혼합계면활성제들은 이상적 혼합 미셀화로부터 크게 벗어나지 않았다. 그러나 SDS/LSB와 SDS/TX-100 혼합시스템은 큰 음의 벗어남을 보였다. 이러한 차이는 미셀 상에서 두 성분들의 상호작용의 세기가 서로 다름으로 나타났으며, 이것들이 4-ethylaniline의 가용화에 크게 영향을 미침을 알 수 있었다. 순수 계면활성제 중에 음이온 계면활성제인 SDS가 다른 계면활성제보다 더 큰 Ks값을 보였으며, Ks값은 SDS≫TTAB≧LSB>TX-100 순으로 감소하였다. 그리고 혼합계면활성제에 의한 Ks값은 그것을 구성하는 순수 계면활성제의 Ks값보다 더욱 큰 값을 나타내었다.

Keywords

References

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