界面活性剤のクラフト点に関する熱力学的研究
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- 辻井 薫
- 花王石鹸株式会社栃木研究所
書誌事項
- タイトル別名
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- Thermodynamic Studies on the Krafft Point of Surfactants
説明
Krafft point is well known as the temperature above which the solubility of a surfactant increases dramatically in aqueous systems. Two kinds of model have so far been proposed to explain this anomalous solution behavior of surfactant. Some new experimental evidences in support of the melting-point model for the Krafft point, one of the above two models, were given recently by the present author and his collaborators. The Krafft point vs. composition curves of the binary surfactant mixtures have been studied and found to be classified into three groups. In the case of group I, there exists a minimum in the Krafft point at a certain composition, whereas the Krafft point for the group II varies monotonously with the composition change. The every diagram of the group III, on the other hand, has a maximum Krafft point. These three types of phase diagrams correspond to the eutectic, solid-solution forming, and addition-compound forming systems observed in the melting point vs. composition curves of the binary mixtures of ordinary substances. A novel Krafft-point depression phenomenon of some zwitterionic surfactants caused by inorganic salts is also argued thermodynamically based on the melting-point model for the Krafft point.
収録刊行物
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- 熱測定
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熱測定 10 (2), 57-65, 1983
日本熱測定学会
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詳細情報 詳細情報について
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- CRID
- 1390282680062616192
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- NII論文ID
- 130003446319
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- ISSN
- 18841899
- 03862615
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
