Characterization of Ethylene-Vinyl Acetate Copolymer by Eluent Gradient HPLC

被引：2

作者：

Kagawa, Nobuyuki ^{[1
]}

Okazaki, Reiko ^{[1
]}

Itou, Akira ^{[1
]}

机构：

[1] TOSOH Anal & Res Ctr Co Ltd, Yokaichi, Mie 5108540, Japan

来源：

BUNSEKI KAGAKU | 2010年 / 59卷 / 09期

关键词：

ethylene vinyl acetate copolymer; gradient HPLC; critical point of adsorption; CHROMATOGRAPHY; SEPARATION; ADSORPTION; POLYMERS;

D O I：

10.2116/bunsekikagaku.59.793

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The elution behaviors of ethylene-vinyl acetate copolymer (EVA) with different composition were characterized by gradient high-performance liquid chromatography. In this study, EVA samples having a narrow molecular-weight distribution containing vinyl acetate (VAc) from 18 wt% to 80 wt% were prepared by size exclusion chromatography for fractionation. EVA samples were eluted depending on the VAc content without depending on the molecular weight with a linear gradient from 100% acetonitrile to 100% chloroform. The relation between the VAc content in EVA and the composition of chloroform in the eluent at the time of EVA eluting indicated a good correlation, and the composition of chloroform in the eluent agreed with the critical adsorption point in the chloroform and acetonitrile eluent.

引用

页码：793 / 799

页数：7

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