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- W2000403840 abstract "Exact eigenvalues which are central to the Gaussian chain theory for dilute solutions of linear polymers have been determined for short chains. This is done for a number of chain segments N ranging from 1 to 15 and taking into account the effects of hydrodynamic interaction between segments. Using these exact eigenvalues, the molecular weight dependence of the steady flow intrinsic viscosity [η] is determined together with the terminal relaxation time τ1 which is derivable from [η]. These theoretical results are compared with similar results obtained using approximate eigenvalues λp for N large and small eigenvalue index p. It is found that while the character of the dependence of the λp, [η] and τ1 on N is similar for both exact and approximate results, the numerical factors may differ significantly. Comparison of these results for [η] with measured values for polystyrene over a wide range of molecular weights gives good agreement with the exact theoretical results and some indication of the inexactness of the approximate results for N large. The τ1 derived from [η] are compared with values obtained independently from oscillatory flow birefringence measurements." @default.
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- W2000403840 date "1969-01-01" @default.
- W2000403840 modified "2023-09-27" @default.
- W2000403840 title "Eigenvalues and the intrinsic viscosity of short Gaussian chains" @default.
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- W2000403840 doi "https://doi.org/10.1016/0032-3861(69)90052-4" @default.
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