Effects of Hydrophobic Chain Length on Temperature Dependence of Monolayer Behavior of Ester-type Tartaric Geminis
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- Kawase Tokuzo
- Department of Chemistry and Materials Technology, Kyoto Institute of Technology
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- Saito Isao
- Department of Chemistry and Materials Technology, Kyoto Institute of Technology
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- Oida Tatsuo
- Department of Chemistry and Materials Technology, Kyoto Institute of Technology
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Ester-type tartaric gemini amphiphiles bearing two carboxyl groups and two hydrophobic alkanoyl groups were prepared from L-tartaric acid, and the pressure-area (π-A) isotherms for a series of symmetric tartaric gemini amphiphiles were measured by the conventional film-balance technique. The effects of the length of the hydrophobic alkanoyl chains and of the subphase temperature (Tsub) on the π-A isotherms for these compounds were examined. As the length of the hydrophobic alkyl chain increased, a more tightly packed monolayer was formed at the air-water interface. The melting temperature (Tm) of the monolayer on the water surface was evaluated from the subphase temperature (Tsub) dependence of the monolayer static elasticity εs, based on a π-A isotherm. A clear relationship between Tm and hydrophobic carbon number (n) was observed for 2D monolayers of tartaric geminis on water surfaces, as well as for fatty acids and/or 3D solids.
収録刊行物
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- Journal of Oleo Science
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Journal of Oleo Science 60 (2), 61-69, 2011
公益社団法人 日本油化学会
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詳細情報 詳細情報について
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- CRID
- 1390282679069111296
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- NII論文ID
- 130000438328
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- NII書誌ID
- AA11503337
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- ISSN
- 13473352
- 13458957
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- NDL書誌ID
- 10942726
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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