Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2000
Title: Errors associated with swelling in the analysis of polymer-solvent diffusion measurements
Authors: Alsoy Altınkaya, Sacide
Alsoy Altınkaya, Sacide
Izmir Institute of Technology. Chemical Engineering
Keywords: Absorption
Diffusion
Mass transfer
Polymer
Simulation
Swelling
Error analysis
Issue Date: Jan-2005
Publisher: Elsevier Ltd.
Source: Alsoy Altınkaya, S. (2005). Errors associated with swelling in the analysis of polymer-solvent diffusion measurements. Chemical Engineering Science, 60(1), 269-277. doi:10.1016/j.ces.2004.08.006
Abstract: Sorption curves are generated from a mathematical model which includes the influence of the polymer swelling for unsteady-state sorption of a vapor or liquid by a polymer. To investigate the simultaneous effects of the specific volumes of the polymer-penetrant pair and the difference between the final and initial equilibrium concentrations on the sorption curves, statistical experimental design approach is used. Simulation results obtained from the numerical solution of model equations are utilized to estimate the error that would occur if one simply evaluates the diffusion coefficient using the traditional formulas derived from the analytical solution of the sorption equation. An empirical expression is developed that describes the effects of the difference between the final and initial equilibrium concentrations and the specific volumes of the polymer and the penetrant on the magnitude of error in diffusivity associated with the use of one of these traditional formulas so called the initial slope method. The predictive ability of the regression model is tested by performing additional simulations not used in the regression analysis.
URI: https://doi.org/10.1016/j.ces.2004.08.006
http://hdl.handle.net/11147/2000
ISSN: 0009-2509
0009-2509
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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