ナイロン６の濃硫酸中におけるＭａｒｋ‐Ｈｏｕｗｉｎｋ‐Ｓａｋｕｒａｄａ式

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タイトル別名
  • Mark-Houwink-Sakurada Equation of Nylon 6 in Coned. Sulfuric Acid
  • ナイロン6 ノ ノウリュウサンチュウ ニ オケル Mark Houwink S

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説明

Nylon 6 was fractionated into 14 fractions by successive precipitational method at 20°C by using phenol/tetrachloroethane (2/3, w/w) as solvent and n-heptane as precipitant. The fractionation run was repeated three times and 42 fractions were obtained. The number-average molecular weight Mn of fractions were determined in o-chlorophenol at 45°C by membrane osmometry and in phenol/methanol by end-group analysis. The following Mark-Houwink-Sakurada equation<BR>[η] =3.32×10-2 Mv0.780<BR>(6×102<Mv<1x105)<BR>for nylon 6 was established in 96-% sulitric acid at 25°C. In eq 1, literature data are also utilized after correcting the polydispersity of the samples employed. The viscosity data are analyzed according to Stockmayer-Fixman, and Kamide et al. 's procedures and characteristic ratio C∞ of 6.0 was obtained.

収録刊行物

  • 高分子論文集

    高分子論文集 35 (7), 467-470, 1978

    公益社団法人 高分子学会

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