Mass transfer in the system cellulose nitrate-ethyl acetate

A qualitative model of mass transfer was formulated, explaining the appearance of anomalies on kinetic curves of sorption in complex microheterogeneous nitrocellulose (NC)-solvent systems. The model is based on the assumption that these systems are of fractal nature. Consequently it is possible to a...

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Bibliographic Details
Published in:Polymer science USSR 1991, Vol.33 (12), p.2424-2434
Main Authors: Popova, Ye.D., Chalykh, A.Ye
Format: Article
Language:English
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Summary:A qualitative model of mass transfer was formulated, explaining the appearance of anomalies on kinetic curves of sorption in complex microheterogeneous nitrocellulose (NC)-solvent systems. The model is based on the assumption that these systems are of fractal nature. Consequently it is possible to apply the Kohlrausch equation for describing the kinetic curves of desorption. Traditional criteria for assessing the mechanism of mass transfer in NC-solvent systems, as well as the determination of effective mass transfer constants in the glassy and highly elastic states of these systems by the classical sorption method are shown to be inadequate.
ISSN:0032-3950
1878-268X
DOI:10.1016/0032-3950(91)90296-3