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Anomalous Diffusion of Poly(ethylene Oxide) in Agarose Gels

Anomalous Diffusion of Poly(ethylene Oxide) in Agarose Gels

Tom Brenner, Shingo Matsukawa

Int J Biol Macromol. 2016 Nov;92:1151-1154.

PMID: 27496604

Abstract:

We report on the effect of probe size and diffusion time of poly(ethylene) oxide in agarose gels. Time-dependence of the diffusion coefficient, reflecting anomalous diffusion, was observed for poly(ethylene) oxide chains with hydrodynamic radii exceeding about 20nm at an agarose concentration of 2%. The main conclusion is that the pore distribution includes pores that are only several nm across, in agreement with scattering reports in the literature. Interpretation of the diffusion coefficient dependence on the probe size based on a model of entangled rigid rods yielded a rod length of 72nm.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP25322683-Q	Poly(ethylene oxide)		25322-68-3	Price

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