DWS microrheology of a linear polysaccharide.

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Title

DWS microrheology of a linear polysaccharide.

Content partner

The University of Auckland Library

Collection

ResearchSpace@Auckland

Description

Diffusing wave spectroscopy has been used to measure the rheological behavior of pullulan (Mw = 1 × 10^{5}) aqueous solutions up to concentration of 40 g/dL. It was found that these solutions were mainly viscous, with the loss modulus G‘‘ higher than the elastic modulus G‘. The plot of the specific viscosity ηsp as a function of pullulan concentration showed two critical concentrations c* = 4 g/dL and c** = 15 g/dL. For c < c*, η sp ≈ c^{1.25±0.05}; for c* < c < c**, η sp ≈ ^{c2±0.05}; and fo...

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Format

Research paper

Research format

Journal article

Date created

2006-03

Creator

Hemar, Yacine / Pinder, DN

URL

http://hdl.handle.net/2292/16190

Related subjects

Biopolymers / Diffusion / Elasticity / Glucans / Macromolecular Substances / Molecular Weight / Polysaccharides / Rheology / Spectrophotometry / Thermodynamics / Time Factors / Viscosity

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