Structure functions and interfacial mean curvatures in a ternary amphiphilic system C12E5/water/n-octane

被引：7

作者：

Ghosh, SK ^{[1
]}

Komura, S ^{[1
]}

Seto, H ^{[1
]}

Matsuba, J ^{[1
]}

Takeda, T ^{[1
]}

Kokosaka, M ^{[1
]}

Imai, M ^{[1
]}

机构：

[1] Hiroshima Univ, Fac Integrated Arts & Sci, Grad Sch Biosphere Sci, Higashihiroshima 739, Japan

来源：

FORMATION AND DYNAMICS OF SELF-ORGANIZED STRUCTURES IN SURFACTANTS AND POLYMER SOLUTIONS | 1997年 / 106卷

关键词：

amphiphile; microemulsion; lamella; partial structure function; mean curvature;

D O I：

10.1007/BF01189500

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Partial structure functions and mean curvatures of a ternary amphiphilic system consisting of water. Ir-octane and nonionic amphiphile C12E5 with equal volume fraction of oil and water have been studied by means of small-angle neutron scattering (SANS). Isotopic contrast variation technique was used to obtain suitable scattering contrasts of oil and water. We observed that the cross partial structure functions, that arise from the correlation between water-surfactant or oil-surfactant, change sign when the temperature passes through the hydrophile-lipophile balance (HLB) point. It indicates that the interaction parameter C of the spin-lattice model invert on HLB line. We have calculated mean curvatures considering that water or oil molecules can partially penetrate into the surfactant film. Experimental results show-that mean curvatures increase as the temperature increases at a rate of 1.5 x 10(-3) (Angstrom(-1) K-1).

引用

页码：98 / 103

页数：6

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