Kinetics of mass transfer during vapour-induced phase separation (VIPS) process and its influence on poly-(vinylidene fluoride) (PVDF)membrane structure and surface morphology
Article
Annamalai, Pratheep Kumar, Pochat-Bohatier, Celine, Bouyer, Denis, Li, Chia-Ling, Deratani, André and Wang, Da-Ming. 2011. "Kinetics of mass transfer during vapour-induced phase separation (VIPS) process and its influence on poly-(vinylidene fluoride) (PVDF)membrane structure and surface morphology
." Desalination and Water Treatment. 34 (1-3), pp. 204-210. https://doi.org/10.5004/dwt.2011.2809
Article Title | Kinetics of mass transfer during vapour-induced phase separation (VIPS) process and its influence on poly-(vinylidene fluoride) (PVDF)membrane structure and surface morphology |
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ERA Journal ID | 41476 |
Article Category | Article |
Authors | Annamalai, Pratheep Kumar, Pochat-Bohatier, Celine, Bouyer, Denis, Li, Chia-Ling, Deratani, André and Wang, Da-Ming |
Journal Title | Desalination and Water Treatment |
Journal Citation | 34 (1-3), pp. 204-210 |
Number of Pages | 7 |
Year | 2011 |
Publisher | Desalination Publications |
Place of Publication | United Kingdom |
ISSN | 1944-3986 |
1944-3994 | |
Digital Object Identifier (DOI) | https://doi.org/10.5004/dwt.2011.2809 |
Web Address (URL) | https://www.tandfonline.com/doi/abs/10.5004/dwt.2011.2809 |
Abstract | The aim of our researches is to study the interplay between membrane morphology and elaboration parameters during non-solvent induced phase separation (NIPS) processes. The present investigation is to correlate the solvent-nonsolvent mass transfer kinetics with the structural morphology and properties of polymeric membranes obtained via water vapour induced phase separation (VIPS) process. For the first time, we have monitored and quantified mass transfer kinetics during VIPS process on homogeneous solution of poly-(vinylidene fluoride) (PVDF) dissolved at two different temperatures in NMP, using near IR spectroscopy (NIR) with chemometric model. A significant change in mass transfer rate (i.e., water penetration) has been observed much earlier than the liquid demixing of the polymer solution occurs for two studied dissolution temperatures. Consecutively to the water penetration, modifications in the physical state (gelation) of the polymer started to occur prior to reaching demixing process. This phenomenon was discussed in terms of macromolecular organization of PVDF caused by the decrease of the solvency power. It is assumed that this physical evolution of the polymer solution influences the phase separation mechanisms and thus the obtained surface and structural morphology of the PVDF membranes. |
Keywords | mass transfer; Near IR spectroscopy; Morphology; Crystallization; Membranes; Poly-(vinylidene fluoride) (PVDF); Vapor-induced phase separation (VIPS); Water; Nonsolvent |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 340302. Macromolecular materials |
Public Notes | There are no files associated with this item. |
Byline Affiliations | University of Montpellier, France |
National Taiwan University, Taiwan |
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