吸湿によるポリアミドの結晶化　Ｉ　　吸湿によるポリ（ｍ‐キシリレンアジパミド）の結晶化

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タイトル別名
  • Crystallization of Poly (<I>m</I>-xylylene adipamide) Induced by Water Absorption
  • キュウシツ ニヨル ポリ m キシリレンアジパミド ノ ケッショウカ キュウシ

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抄録

Water sorption behavior of a quenched amorphous sample of an aromatic polyamide, poly (m-xylylene adipamide), was studied. Under low humidities at 50°C the sorption showed no abnormal behavior, while under humidities higher than ca. 60% the absorption markedly decreased after it had reached a maximum. By the changes of X-ray diffraction and thermal properties of the sample by the absorption, the above result was attributed to the crystallization of the sample which was induced by the lowerings of glass transition and crystallization temperatures due to water absorption, The reduction of moisture regain by the crystallization was nearly equal to the reduction of amorphous content. This means that water is excluded from the polymer phase as it crystallizes and this excluded water does not remain between the crystalline phases but leaves the polymer.

収録刊行物

  • 高分子論文集

    高分子論文集 36 (3), 141-146, 1979

    公益社団法人 高分子学会

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