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Updated: Aug 19, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
Published on: September 26, 2016
Scaling laws for diffusion coefficients in mixtures of alkanes
Denise E Freed1, Lauren Burcaw, Yi-Qiao Song
1Schlumberger-Doll Research, 36 Old Quarry Road, Ridgefield, Connecticut 06877, USA.
Abstract:
Natural fluids, such as crude oils, are often mixtures of a broad range of different molecules, and in situ measurement of their composition is highly desirable. Furthermore, the relationship between their composition and their physical properties has always been a challenge for such mixtures. We have analyzed diffusion in alkane mixtures to find a power law for the self-diffusion coefficient in terms of molecular sizes. We demonstrate that this power law can be used to obtain the molecular size distribution of crude oils using noninvasive measurements of diffusion distributions.
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