Journal of Applied Science and Engineering

Published by Tamkang University Press

1.30

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2.10

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Chien-Hsueh Shih1, Carl C. Gryte1 and Liao-Ping Cheng This email address is being protected from spambots. You need JavaScript enabled to view it.2,3

1Department of Chemical Engineering and Applied Chemistry, Columbia University, New York, NY 10027, U.S.A.
2Department of Chemical and Materials Engineering, Tamkang University, Tamsui, Taiwan, 251, R.O.C.
3Energy and Opto-Electronic Materials Research Center, Tamkang University, Tamsui, Taiwan, 251, R.O.C.


 

Received: October 24, 2011
Accepted: March 7, 2012
Publication Date: December 1, 2012

Download Citation: ||https://doi.org/10.6180/jase.2012.15.4.06  


ABSTRACT


The ternary mass transfer equations that describe the isothermal immersion process for polyamide membrane preparation were solved. To account for the moving boundary conditions, coordinate transformations were performed both for the membrane and the bath regions. Mutual diffusion coefficients between solvent and polymer were measured and used to derive ternary phenomenological coefficients for mass transfer equations. The calculated precipitation times, concentration profiles, and diffusion trajectories were found to agree with the measured light transmittance data and the membrane morphologies presented previously.


Keywords: Nylon-6, Membrane, Ternary, Diffusion, Precipitation


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