Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)
- Volume 4 Issue 2
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- Pages.43-48
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- 1987
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- 1225-9098(pISSN)
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- 2288-1069(eISSN)
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Surface Activities of Carboxybetaine Derivatives
카르복시베타인 유도체(誘導體)의 계면활성(界面活性)
- Shon, Joo-Hwan (Dept. of Chemical Engineering, Inha University) ;
- Kim, Yu-Ok (Dept. of Chemical Engineering, Inha University)
- Published : 1987.11.30
Abstract
Isoelectric point and surface tension of twelve of the alkylcarboxy betaines such as 2-(trimethylammonio) dodecanoate, 2-(trimethyammonio) tetradecanoate, 2-(trimethylammonio) hexadecanoate, (dimethyldodecylammonio)ethanoate, (dimethyltetradecylammonio)ethanoate, (dimethylhexadecylammonio) ehtanoate, 2-(dimethylododecylammonio) propanoate, 2-(dimethyltetradecylammonio)proopanoate, 2-(dimethylhexadecylammonio)propanoate, 2-(dimethyltetradecylammonio)-3-phenyl propanoate, 2-(dimethyltetradecylammonio)-3-phenyl propanoate are tested. From the measurement of the isoelectric point, it was found that the isoelectric point were leaned toward the alkaline zone for c-alkylarbrxybetaines, and toward the acidic zone for N-alkylcarboxybetaines. At the range of the carboxybetaine concentration
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