Preparation and Surface Active Properties of Alkali Salts of <I>N</I>-Perfluorooctanoylamino Acids
スポンサーリンク
概要
- 論文の詳細を見る
Ethyl perfluorooctanoate was reacted at 30°C for 2h in ethanol with ethyl ester of amino acid (glycine, α- and β-alanine) to prepare <I>N</I>-perfluorooctanoylamino acid ester. The esters thus prepared were saponified to form the desired surface active agents by atidification with hydrochloric acid and successive neutralization with alkali hydroxides. The aqueous solution of these surfactants were subjected to the determination of surface tension, critical micelle concentration, Krafft point, wettability and oil repellency according to the conventional methods. Generally, the glycine derivatives were only slightly soluble in water showing higher Krafft points and poor surface activities. The α-alanine derivatives showed lower Krafft point due to the presence of methyl side chain and superior wettability to other amino acid derivatives. The β-alanine derivatives exhibited significant surface tension depression and in the case of K salt the surface tension was depressed to 15dyn/cm.
- Japan Oil Chemists' Societyの論文
著者
-
MURAI Koichi
Department of Fuel Chemistry, Mining College, Akita University
-
NISHIYAMA Tatsuo
Now Akita Chemical Company
-
KIMURA Chikai
Department of Chemical Engineering for Resources, Mining College, Akita University
-
KASHIWAYA Kageaki
Department of Chemical Engineering for Resources, Mining College, Akita University
-
KOBAYASHI Mitsunobu
Department of Chemical Engineering for Resources, Mining College, Akita University
関連論文
- Successful treatment using high-dose intravenous immunoglobulin in a patient with rapidly progressive interstitial pneumonia associated with dermatomyositis
- Prevalence of Genotypes of orientia tsutsugamushi in Patients with Scrub Typhus in Miyazaki Prefecture
- The use of silica gel-supported ionenes as reagents and catalysts for several substitution reactions in toluene.
- Excimer formation and intramolecular self-complexation of double-armed .GAMMA.-cyclodextrin.
- Preparation and Surface Active Properties of Alkali Salts of N-Perfluorooctanoylamino Acids