Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Effects of Pentanol on the Rheology of Lecithin/LiCl Oranogel

Lecithin/LiCl 유기젤의 펜탄올 영향에 대한 유변학적 연구

  • Kim, Min-Gook (Department of Chemical Engineering, The Kumoh National Institute of Technology) ;
  • Chu, Eun-Ae (Department of Chemical Engineering, The Kumoh National Institute of Technology) ;
  • Lee, Hee-Young (Department of Chemical Engineering, The Kumoh National Institute of Technology)
  • 김민국 (금오공과대학교 화학공학과) ;
  • 추은애 (금오공과대학교 화학공학과) ;
  • 이희영 (금오공과대학교 화학공학과)
  • Received : 2021.11.10
  • Accepted : 2021.11.19
  • Published : 2021.12.10
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Abstract

Lecithin, a zwitterionic phospholipid, forms spherical reverse micelles in nonpolar organic solvents such as decane. The addition of monovalent ions like lithium chloride (LiCl) to lecithin organosols induces the transformation of organosols into organogels due to the entanglement of reverse cylindrical micelles. In this study, we investigate the effect of pentanol acting as co-surfactant on rheological properties of lecithin/LiCl mixtures. From rheological studies, we find that the viscosity and elastic property of organogels decreased upon the addition of pentanol to organogels. The decrease in viscosity and elastic property can be attributed to the shortening of reverse cylindrical micelles confirmed by small angle X-ray scattering (SAXS).

양친매성 인지질의 한 종류인 레시틴은 데케인과 같은 비극성 유기용매상에서 구형의 역마이셀을 형성한다. 염화리튬과 같은 이온이 레시틴용액에 첨가될 때, 유기졸이 역실린더형 마이셀의 얽힘으로 인해 유기젤로 변환하게 된다. 이번 연구에서, 우리는 레시틴과 염화리튬 혼합물의 유변학적 성질에 대한 보조계면활성제로서의 펜탄올 효과를 연구하고자 한다. 유변학 연구를 통해, 유기젤에 펜탄올이 첨가될 때, 유기젤의 점도와 탄성 성질이 감소하였다. 이러한 감소는 역실린더 마이셀의 길이의 감소가 그 원인이며, 엑스선 소각 산란분석기를 통해 이를 확인하였다.

Keywords

Acknowledgement

This paper was supported by Kumoh National Institute of Technology.

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