The Frictional Coefficient for Flexible Chain Molecules in Dilute Solution
摘要：
The frictional coefficient,f0, of a polymer molecule in dilute solution is assumed to vary directly as an average linear dimension of the chain. From this assumption equations are developed, as follows, which are analogous to those used successfully in the interpretation of intrinsic viscosity measurements;f0/η0=KfMα andKf=P(〈r02〉/M)where α represents the factor by which the actual root‐mean‐square end‐to‐end distance exceeds the unperturbed distance (〈r02〉),Mis the molecular weight, η0the viscosity of the medium, andPshould be a universal constant. Data in the literature on the dependence on molecular weight of sedimentation constants and diffusion coefficients, extrapolated to infinite dilution confirm the conclusions drawn from these equations.
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DOI：
10.1063/1.1700380
被引量：
年份：
1952
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