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タイトル: Krafft temperature and enthalpy of solution of N-acyl amino acid surfactants and their racemic modifications: Effect of the amino acid residue
著者: Ohta, Akio link image link image
Ozawa, Noriaki
Nakashima, Satoru
Asakuwa, Tsuyoshi
Miyagishi, Shigeyoshi
太田, 明雄
発行日: 2003年 4月
出版社(者): Springer Verlag
引用: Colloid and Polymer Science 281 (4), pp. 363-369
雑誌名: Colloid and Polymer Science
ISSN: 0303-402X
巻: 281
号: 4
開始ページ: 363
終了ページ: 369
キーワード: Amino acid residue
Chiral effect
Enthalpy of solution
Krafft temperature
N-acyl amino acid surfactant
抄録: The Krafft temperatures and the enthalpies of solution of six kinds of N-hexadecanoyl amino acid surfactant (Gly, Ala, Val, Leu, Ile, and Phe) were obtained from both solubility measurements and differential scanning calorimetry. It was shown that the Krafft temperature of N-hexadecanoyl amino acid surfactant increased with decreasing size of the amino acid residue except for the case of phenylalanine. On the other hand, the enthalpy of solution was endothermic and increased with decreasing size of the amino acid residue except for the cases of glycine and phenylalanine. It was found from these results that the D-L interaction was superior to the L-L interaction in solid state of N-hexadecanoyl amino acid surfactant salt for both the alanine and phenylalanine systems. It was suggested by ab initio calculations that the difference of the magnitude of the peptide-peptide hydrogen bonding was the dominant factor for the chiral effect.
URI: http://hdl.handle.net/2297/1830
資料種別: Journal Article
版表示: author

このアイテムを引用あるいはリンクする場合は次の識別子を使用してください。 http://hdl.handle.net/2297/1830



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