Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0376-7388(97)00019-7
Title: Breaking the limitation of composition change during isothermal mass-transfer processes at the spinodal
Authors: Chung, T.S. 
Teoh, S.K. 
Keywords: Gravitational field
Mass transfer
Membrane formation
Phase inversion
Spinodal
Issue Date: 23-Jul-1997
Source: Chung, T.S., Teoh, S.K. (1997-07-23). Breaking the limitation of composition change during isothermal mass-transfer processes at the spinodal. Journal of Membrane Science 130 (1-2) : 141-147. ScholarBank@NUS Repository. https://doi.org/10.1016/S0376-7388(97)00019-7
Abstract: A governing equation describing the mass-transfer fluxes in practical membrane formation is derived using Markoffian and Onsager's thermodynamic systems. This equation unambiguously demonstrates that isothermal mass-transfer fluxes at the spinodal composition may not be zero for systems operated in the gravitational field. This study suggests that the mass transfer equations derived by Cheng and Gryte are a special case of the present study and are not fully capable of describing the mass transfer in practical membrane formation. Experimental results published in previous literature qualitatively support our assessment. The limitations of using Markoffian and Onsager's thermodynamic systems for membrane formation study are also reviewed. In conclusion, new thermodynamic theories for polymer solutions are needed to quantitatively describe the mass transfer fluxes in practical membrane formation.
Source Title: Journal of Membrane Science
URI: http://scholarbank.nus.edu.sg/handle/10635/67375
ISSN: 03767388
DOI: 10.1016/S0376-7388(97)00019-7
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