Sedimentation studies of bi-component polystyrene solutions in analytical ultracentrifugation by comparison of two analysis methods: effect of polymer mixing ratios

被引：0

作者：

V. Mittal

M. D. Lechner

机构：

[1] BASF SE,Chemical Engineering Department

[2] Polymer Research,Physical Chemistry

[3] The Petroleum Institute,undefined

[4] University of Osnabrueck,undefined

来源：

Polymer Bulletin | 2012年 / 68卷

关键词：

VelXLAI; Sedfit; Sedimentation; Ultracentrifugation; Mixture;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Two data analysis programs of Sedfit and VelXLAI associated with analytical ultracentrifugation were compared with each other for the sedimentation analysis of a pure polystyrene polymer solution as well as solutions of polymer mixtures in organic solvent containing two components in different mixing ratios. Interference detection optics was used for the sedimentation analysis. The pure polymer showed concentration dependency of the sedimentation coefficient and the results were similar in both the programs. In the mixture samples, slight differences in the peak sedimentation coefficients of the two polymers fractions in the analysis programs were observed. However, VelXLAI program was observed to detect the relative fractions of the two mixture components more accurately than Sedfit.

引用

页码：167 / 179

页数：12

共 23 条

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