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Ionic polymers based on dextran: hydrodynamic properties in aqueous solution and solvent mixtures.

Luminita Ghimici¹, Marieta Nichifor, Bernhard Wolf

¹"Petru Poni" Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania. lghimici@icmpp.ro

The Journal of Physical Chemistry. B

|May 16, 2009

Summary

This summary is machine-generated.

Ionic polysaccharides

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Area of Science:

Polymer Chemistry
Physical Chemistry
Materials Science

Background:

Ionic polysaccharides are polymers with charged groups.
Understanding their behavior in solution is crucial for applications.

Purpose of the Study:

To investigate the hydrodynamic properties of ionic polysaccharides.
To determine how charge density and solvent composition affect polyion conformation.

Main Methods:

Capillary viscometry was used to measure hydrodynamic properties.
The Wolf method was applied to analyze viscometric data.
Evaluations were performed in salt-free aqueous solutions and aqueous/organic mixtures.

Main Results:

Experimental data fit well with the Wolf method.
Intrinsic viscosities and hydrodynamic parameters were calculated.
Polyion conformation depends on charge density and solvent composition.

Conclusions:

Hydrodynamic properties provide insights into polyion conformation.
Charge density and solvent composition are key factors influencing polysaccharide behavior.