熱分解ガスクロマトグラフィーによるスチレン系樹脂の組成分析

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書誌事項

タイトル別名
  • Determination of components in styrene copolymers by pyrolysis GC.
  • ネツ ブンカイ ガス クロマトグラフィー ニ ヨル スチレンケイ ジュシ ノ

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抄録

The standard test of plastics for food packaging is defined by the Food Sanitation Law in Japan and the testing methods vary depending on the material. Copolymers are examined by evaluating the contents of major components (>50%). Therefore, in case of styrene (St) copolymers, it is necessary to know St content in the copolymers. St concentration in copolymers was determined by Curie point pyrolysis GC. Open tubular glass columns (1.2 mm i.d.) were chosen to separate the pyrolysis products of the St copolymers with high resolution. Best resolution was obtained on serially coupled columuns coated with dimethyl silicone (G-100) and polyethylene glycol (G-300). The precision was within 2.8% R.S.D. (n=10). The determination of composition in commercial St copolymer products (styrene-acrylonitrile resin, acrylonitrile-butadiene-styrene resin etc.) for food packaging was successfully achieved by the present method and the St concentration proved to be more than 50%. This method is suitable to know the composition of the copolymers simply by taking pyrograms of the samples since it dose not require any pretreatment to remove additives.

収録刊行物

  • 分析化学

    分析化学 39 (3), 183-187, 1990

    公益社団法人 日本分析化学会

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