Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Synthesis and Properties of Gemini Type's Diethylene Glycol Dicarboxylates

제미니형 디에틸렌글리콜 디카르복실레이트 류의 합성 및 특성

  • Choi, Eun-Ji (Department of Industrial Engineering Chemistry Chungbuk National University) ;
  • Jeon, Young-Soo (College of Pharmacy. Chungbuk Nat'l, Univ.) ;
  • Lee, Jae-Duk (Department of Industrial Engineering Chemistry Chungbuk National University) ;
  • Jeong, Noh-Hee (Department of Industrial Engineering Chemistry Chungbuk National University)
  • 최은지 (충북대학교 공과대학 공업화학과) ;
  • 전영수 (충북대학교 약학대학 약학과) ;
  • 이재덕 (충북대학교 공과대학 공업화학과) ;
  • 정노희 (충북대학교 공과대학 공업화학과)
  • Received : 2010.05.26
  • Accepted : 2010.08.25
  • Published : 2010.09.30
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Abstract

This study concerned about "Gemini type co-surfactant" which has very interesting properties with new components. They were synthesized by reaction of diethylene glycol monoethyl ether and dicarboxylic acid. The structure could be comfirmed with FT-IR and $^1H$-NMR. Surface active properties such as surface tension, evaluated cmc, cloud point, emulsing power were measured respectively at given conditions. Their surface tensions in the aqueous solution were decreased to 33~35 dyne/cm, which was lower than 39 dyne/cm of SDS, and their cmc values evaluated by surface tension method were $5.0{\times}10^{-1}\sim7.5{\times}10^{-1}$ mol/L. And the emulsifying power was excellent in jojoba oil. All of the synthesized Gemini surfactants possessed good water solubility and their cloud point were $48\sim58^{\circ}C$. As results, Gemini surfactants which were synthesized are expected to be applied as O/W emulsifiers.

Keywords

References

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  1. 디프로필렌글리콜 숙시네이트의 합성 및 유화특성 vol.29, pp.1, 2010, https://doi.org/10.12925/jkocs.2012.29.1.6