Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Preparation and Antifoaming Properties of Long Chain Fatty Acid Methyl Esters

고급지방산 메틸 에스테르류의 합성 및 소포특성

  • Park, Jong-Kwon (Department of Engineering Chemistry, College of Engineering Chungbuk National University Chemistry) ;
  • Kim, A-Ram (Department of Engineering Chemistry, College of Engineering Chungbuk National University Chemistry) ;
  • Hwang, Jun-Bae (Department of Engineering Chemistry, College of Engineering Chungbuk National University Chemistry) ;
  • Jeong, Noh-Hee (Department of Engineering Chemistry, College of Engineering Chungbuk National University Chemistry)
  • 박종권 (충북대학교 공과대학 공업화학과) ;
  • 김아람 (충북대학교 공과대학 공업화학과) ;
  • 황준배 (충북대학교 공과대학 공업화학과) ;
  • 정노희 (충북대학교 공과대학 공업화학과)
  • Received : 2015.03.04
  • Accepted : 2015.03.20
  • Published : 2015.03.30
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Abstract

In this study, anti-foaming agents of a fatty acid methyl esters was synthesized and confirmed by FT-IR and $^1H-NMR$ spectroscopy. Synthesized material of characteristic of -C=O group having a $1740cm^{-1}$ and -C-O group $1175cm^{-1}$ peak by using FT-IR, and it was confirmed that k. Surface tensions were measured by surface tensiometer CBVP-43. Their surface tension values was 17.7 to 21 dyne/cm. Anti-foaming abilities in the SLS solution was measured through the Ross-Miles method. Performance of the 4 type of anti-foaming agent was determined and the best anti-foaming agent was prepared using stearic acid methyl.

고급지방산 메틸 에스테르류의 소포제를 합성하고 FT-IR과 $^1H-NMR$ 분석을 통해 확인하였다. FT-IR을 이용하여 합성된 물질의 특징인 -C=O기는 $1740cm^{-1}$ 부근에서, 그리고 C-O기는 $1175cm^{-1}$ 피크 값을 가지는 것을 확인하였다. 또한 $^1H-NMR$ 분석을 통해 에스테르의 -C=O의 Chemical shift가 2.29 ppm에서 나타나는 것을 확인하였다. 표면장력은 Surface Tensiometer CBVP-43을 이용하여 측정하였다. 표면장력은 17.7에서 21 dyne/cm 값을 가진다. SLS 수용액에서의 소포능은 Ross-Miles법을 통해 측정되었다. 4종류의 소포제 중 소포능은 스테아르산메틸을 이용하여 제조한 소포제가 가장 뛰어난 것으로 측정됐다.

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