BLACK FOAM FILMS OF BINARY AQUEOUS-SOLUTIONS OF GELATIN AND A SURFACTANT

被引：0

作者：

DERKACH, SR ^{[1
]}

IZMAILOVA, VN ^{[1
]}

ZOTOVA, KV ^{[1
]}

机构：

[1] MV LOMONOSOV STATE UNIV,DEPT CHEM,MOSCOW 117234,USSR

来源：

COLLOID JOURNAL OF THE RUSSIAN ACADEMY OF SCIENCES | 1991年 / 53卷 / 06期

关键词：

D O I：

暂无

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：

For different-types of surfactants - anionic (sodium dodecylsulfate), cationic (cetypyridinium chloride), and nonionic (oxyethylated tridecanol), a study has been made of their influence on the properties of free films of gelatin-based foams. It has been shown that the film type and the region of film existence for binary solutions of gelatin and surfactant are determined by the structural-rheological properties of the adsorbed layers (the modulus of elasticity and the plastic viscosity). Thermodynamic parameters have been determined for black films formed from a gelatin/surfactant/electrolyte (NaCl) system. The contact angles are smaller than 1-degrees, and the additional tension is on the order of 10(-3) mN/m. The contact angles of black films in binary solutions decrease with increasing surfactant concentration, as do the rheological parameters of the adsorbed layers.

引用

页码：856 / 861

页数：6