熱分解性界面活性剤の合成と性質

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タイトル別名
  • Syntheses and Properties of Thermally Decomposable Surfactants
  • ネツ ブンカイセイ カイメン カッセイザイ ノ ゴウセイ ト セイシツ

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抄録

Thermally decomposable surfactants were prepared by the reaction of xylylenediisocyanate with polyethyleneglycol monomethyl ether acetoacetate and alcohols such as butyl, octyl, decyl, lauryl, myristyl, palmityl, and stearyl alcohols. <BR>The properties such as the cmc, surface tension, foaming power, and wetting power of the aqueous solutions of the surfactants were measured. <BR>Under thermal treatment of the aqueous solution, the surfactants were decomposed to water-insoluble compounds, and the surface tension of their aqueous solutions increased. This thermal decomposition was accelerated by bases such as sodium hydroxide and triethylenediamine, but suppressed by acids such as sulfuric acid and p-toluenesulfonic acid. <BR>The dissociation temperatures of blocked isocyanates of these surfactants, measured by infrared spectroscopy according to the method of Griffin, were 90°C, which were not dependent on the length of the alkyl groups of these surfactants. On the other hand the temperatures decreased to 6570°C in the presence of triethylenediamine as a catalyst.

収録刊行物

  • 油化学

    油化学 28 (12), 909-913, 1979

    公益社団法人 日本油化学会

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