Excluded volume effect of linear polymer molecules |
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Authors: | Michio Kurata |
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Abstract: | An approximate closed expression for the excluded volume effect of linear polymer molecules is developed with the aid of a uniform expansion model of perturbed chains. The linear expansion factor α for the end-to-end distance is given by (α3 ? 1) + (3/8) (α5 ? α3) = (5/2)z where z is the excluded volume parameter. This equation is numerically close to the Ptitsyn equation in the ordinary range of α; i.e., for 1 ≤ α ≤ 2. |
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