Characterization of Ethylene-Vinyl Acetate Copolymer by Eluent Gradient HPLC

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  • 溶媒グラジエント高速液体クロマトグラフィーによるエチレン‐酢酸ビニル共重合体の解析
  • 溶媒グラジエント高速液体クロマトグラフィーによるエチレン-酢酸ビニル共重合体の解析
  • ヨウバイ グラジエント コウソク エキタイ クロマトグラフィー ニ ヨル エチレン サクサン ビニル キョウジュウゴウタイ ノ カイセキ

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Description

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.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 59 (9), 793-799, 2010

    The Japan Society for Analytical Chemistry

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