INTERPRETATION OF LIGHT-SCATTERING FROM SUPERMOLECULAR STRUCTURES IN LIQUID-SYSTEMS BY MASTER CURVES

被引:52
作者
DAUTZENBERG, H
ROTHER, G
机构
[1] Acad of Sciences of the GDR, Teltow, East Ger, Acad of Sciences of the GDR, Teltow, East Ger
关键词
COLLOID CHEMISTRY - Mathematical Models - COLLOIDS - Optical Properties - LIGHT - Scattering - MATHEMATICAL TECHNIQUES - Curve Fitting - POLYELECTROLYTES - Solutions;
D O I
10.1002/polb.1988.090260211
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
By a detailed analysis of light scattering curves, a more complete characterization of colloidal particles may be achieved. For this purpose, a fitting procedure based on theoretical master curves for models of polydisperse systems of homogeneous spheres and Gaussian coils is presented. The use of a suitable logarithmic distribution function makes it possible to separate the influence of polydispersity from that of particle size on the shape of the scattering curve. A double logarithmic plot of master curves reduces the fitting procedure to translations of the experimental curves. The reliability and accuracy of this procedure are demonstrated by light scattering results on solutions of a polyelectrolyte complex with variation of salt content.
引用
收藏
页码:353 / 366
页数:14
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