Journal
JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS
Volume 47, Issue 5, Pages 913-928Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00222340802216095
Keywords
cellulose acetate; solution properties; preferential adsorption coefficient; association constants
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Modification of intrinsic viscosity, coil size, and preferential adsorption coefficients of cellulose acetate with various substitution degrees in single and mixed solvents was investigated at different temperatures. Miscibility is attained by specific competitive interactions between the solvent-solvent and solvent-polymer systems, which induce modification in the composition of solvent mixtures both inside and outside the polymer coil. The conformational properties in solutions were correlated with the preferential adsorption coefficients, known as depending on the interaction parameters of the polymer/solvent/solvent systems. The intermolecular interactions observed in the cellulose acetate solutions assure the main properties necessary for obtaining membranes with different applications.
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