ポリ塩化ビニルのジオキサン濃厚溶液の性質

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タイトル別名
  • NON-NEWTONIAN FLOW OF CONCENTRATED DIOXANE SOLUTION OF POLYVINYL CHLORIDE
  • ポリ エンカビニル ノ ジオキサン ノウコウ ヨウエキ ノ セイシツ

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抄録

Non-Newtonian flow of concentrated dioxane solutions of five polyvinyl chlorides(PVC) of different molecular weights has been studied. The dependences of the apparent and zero-shear viscosities on the rate of shear, molecular weight, and concentration are very similar to that in PVC-cyclohexanone solution.<br>The log-log plots of zero-shear viscosity against concentration for PVC-dioxane solutions are represented by two straight lines intersecting at one point (critical concentration, Cc). The slopes of lines are 5. 4 above Cc and 2.9 below Cc, respectively.<br>Furthermore, the products of critical concentration in volume fraction of polymer, VZC, multiplied by the chain length Z are found in the rannge from 130 to 210. The value Ccρ√Z densit of solution) is approximately constant and independent of the chain length as same as in the previous study on PVC-cyclohexanone solution. These results do not follow the Bueche′s theory.<br>Ccρ√Z value in dioxane is explained reasonably by using an Equivalent Gel Sphere Model, if the PVCchain association in dioxane solution is considered.

収録刊行物

  • 日本ゴム協会誌

    日本ゴム協会誌 36 (12), 1086-1089, 1963

    一般社団法人 日本ゴム協会

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