Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Studies on the Synthesis of Carboxybetaine Derivatives and Surface Activities

카르복시 베타인 유도체의 합성 및 계면활성에 관한 연구

  • Kim, Kioen-Il (Dept. of Chem. Eng., In Ha University) ;
  • Sohn, Joo-Hwan (Dept. of Chem. Eng., In Ha University) ;
  • Nam, Ki-Dae (Dept. of Chem. Eng., Chung Buk National University) ;
  • Kim, Yu-Ok (Dept. of Ind. Chem., Dong Yang Technical Junior College)
  • 김권일 (인하대학교 공과대학 화학공학과) ;
  • 손주환 (인하대학교 공과대학 화학공학과) ;
  • 남기대 (충북대학교 공과대학 화학공학과) ;
  • 김유옥 (동양공업전문대학 공업화학과)
  • Published : 1986.05.31
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Abstract

1-(carboxyalkyl) trimethyl ammonium chlorides such as 1-(carboxyundecyl) trimethyl ammonium chloride and 1-(carboxytridecyl) trimethyiammonium chloride were synthesized by the reaction of ${\alpha}-bromoalkanoic$ acid with trimethyl amine hydrochloride. In other hand, (carboxymethyl) alkyl dimethyl ammonium chlorides such as (carboxymethyl) dodecyl dimethyl ammonium chloride and (carboxymethyl) tetradecyl dimethyl ammonium chloride were synthesized by the reaction of alkyl dimethylamine with sodium chloroacetate. The four kinds of alky carboxy betaine such as 2-(trimethylammonio) dodecanoate, 2-(trimethyl ammonio) tetradecanoate, (dodecyl dimethylammonio) ethanoate and (tetradecyl dimethyl ammonio) ethanoate were prepared from 1-(carboxyalkyl) trimethyl ammonium chlorides or (carboxymethy1) alkyl dimethyl ammonium chlorides. The surface activities including surface tension, emulsifying power, foaming power, foam stability, deflocculating effect, effectiveness of wettability and solubilizing effect were measured and also critical micelle concentration and hydrophilic-lipophilic. balance(HLB) were evaluated. These carboxy betaines show good surface activities as O/W type emulsifing agent and detergent.

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