Dielectric Constant Studies. III. Aqueous Gelatin Solutions

被引：5

作者：

Ferguson, A. L. ^{[1
]}

Malone, J. Gilbert ^{[1
]}

Case, L. O. ^{[1
]}

机构：

[1] Univ Michigan, Chem Lab, Ann Arbor, MI 48109 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 1934年 / 2卷 / 02期

关键词：

D O I：

10.1063/1.1749426

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：

Measurements have been made of the dielectric constant of gelatin solutions. A test of the Bjerrum "Zwitter-ionen" theory was furnished by a study of the effect of pH on the dielectric constant as measured by the Drude method; the data obtained support the theory. Through the application of an equation suggested by Marinesco, an attempt was made to determine the amount of water fixed by gelatin; if this equation is valid for gelatin the results obtained for absorbed water must be interpreted as indicating that the water bound by the gelatin is still free to show its dielectric properties. By means of another equation given by Marinesco relating dielectric absorption with molecular weight, values were calculated for the molecular weight of gelatin; the results obtained are consistent with those given by other methods.

引用

页数：5