Analysis of composition complicated binary mixture by quantitative SEC

Zhengnian CHEN ¹Hongfeng XIE ²Hu YANG ²Zhiliu WANG ²Rongshi CHENG³

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作者信息

1. Key Laboratory for Mesoscopic Chemistry, Ministry of Education,College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China;Department of Materials, Nanjing Technology of Institute, Nanjing211167, China
2. Key Laboratory for Mesoscopic Chemistry, Ministry of Education,College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
3. Key Laboratory for Mesoscopic Chemistry, Ministry of Education,College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China;College of Material Science and Engineering, Polymer Institute,South China University of Technology, Gu
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Abstract

The analyses of the composition of a binary mixture composed of two kinds of industrial complicated materials have great importance for formulation in practice.The present paper provides a quantitative size exclusion chromatography (SEC) method based on the principle of absolute quantification of SEC to solve the problem. The conventional data treatment procedure for the differential refractive index (DRI) signal of SEC H(V) is improved first by dividing it with the injected sample weight and leads to a novel defined weight normalized distribution Hw(V) and its integral Iw(V). These two distributions reflect the response constant of the sample in addition to the conventional normalized distribution F(V). The difference of the average response constants of the composing components provides a sensitive method to compute the composition of their mixture from its Hw(V) or Iw(V). The method was applied to mixtures of a kind of industrial asphalt and paraffin diluents as an example, and successful results are obtained.

Key words

SEC data treatment/composition of binary mixture

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基金项目

国家自然科学基金(50633030)

教育部高等学校博士学科点专项科研基金(20070284054)

出版年

2008

中国化学前沿

高等教育出版社

中国化学前沿

ISSN：1673-3495

参考文献量6

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