Preparation and Surface Activities of Cotelomers of Acrylic Acid and η-Octyl, 2-Ethylhexyl or 2-Phenylethyl Acrylate

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概要

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• Cotelomers of acryric acid and n -octyl acrylate, 2-ethylhexyl acrylate or 2-phenylethyl acrylate with same carbon numbers (abbreviation by 2.1NoA-1.2AA, 1.9EhA-2.9AA and 1.6PeA-3.0AA, respectively; 2.1, 1.9 and 1.6 mean number of hydrophobic functions, 1.2, 2.9 and 3.0 mean number of carboxylate functions) were prepared by the radical cotelomerization in presence of 2-aminoethanethiol hydrochloride and examined for surface activity. Critical micelle concentrations (cmcs) of 2.1NoA-1.2AA, and 1.9EhA-2.9AA were 1/16 and 1/5 of that of conventional surfactant of sodium n -octanoate. Surface tensions of aqueous solutions of 2.1NoA-1.2AA, 1.9EhA-2.9AA and 1.6PeA-3.0AA were 32.3, 27.3 and 41.1 mN m-1 at each cmc, respectively. 2.1NoA-1.2AA having straight alkyl chains and 1.9EhA-2.9AA having branched alkyl chains gave figh foaming abilities in water as well as in hard water. 2.1NoA-1.2AA had high foam stability, while 1.9EhA-2.9AA showed poor stability. The highly stable oil-in-water type emulsions, which were brought about by shaking toluene with aqueous solutions of cotelomers, were formed by using 1.6PeA-3.0AA having aromatic nucleus. Interfacial tensions between aqueous solutions of 2.1NoA-1.2AA, 1.9EhA-2.9AA and 1.6PeA-3.0AA and toluene were 4, 8 and 1mN m-1, respectively.

• 日本油化学会の論文
• 2001-02-01

著者

• SHOSENJI Hideto

  Department of Applied Chemistry and Biochemistry, Graduate School of Science and Technology, Kumamot

• ESUMI Kunio

  Department of Applied Chemistry and Institute of Colloid and Interface Science, Science University o

• Shosenji Hideto

  Department Of Applied Chemistry And Biochemistry Faculty Of Engineering Kumamoto University

• YOSHIMURA Tomokazu

  Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University

• HONTAKE Koichi

  Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University

• Esumi K

  Department Of Applied Chemistry And Institute Of Colloid And Interface Science Science University Of

• Esumi Kunio

  Department Of Applied Chemistry And Institute Of Colloid And Interface Science Science University Of

• Yoshimura Tomokazu

  Department Of Applied Chemistry And Biochemistry Faculty Of Engineering Kumamoto University

• Hontake Koichi

  Department Of Applied Chemistry And Biochemistry Faculty Of Engineering Kumamoto University

• Shosenji Hideo

  Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University

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