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Diffusion, sedimentation and flow birefringence in solutions of monosubstituted carboxymethylcellulose in cadoxene

Authors
Journal
Polymer Science U S S R
0032-3950
Publisher
Elsevier
Publication Date
Volume
29
Issue
1
Identifiers
DOI: 10.1016/0032-3950(87)90077-3

Abstract

Abstract The hydrodynamic and dynamo-optical properties of carboxymethylcellulose with M = (39 − 370) × 10 3 and degree of substitution 0·9 ± 0·1 in cadoxene and cadoxene plus H 2O (1:1) have been investigated. Equations are obtained relating the characteristic viscosity and the sedimentation and diffusion coefficients to the molecular mass. Enlisting the theories of the hydrodynamic properties of worm-like chains for carboxymethylcellulose in cadoxene the authors calculate the length of the Kuhn segment A = 130 ± 20 A ̊ which proved to be close to the A value for cellulose. For solutions in cadoxene with water the magnitude A is 1·5−2 times higher. The optical shear coefficient and the optical anisotropy of the statistical segment of carboxymethylcellulose are close to the corresponding values for the cellulose chain in the same solvent.

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