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Title: | A biologically inspired hydrophobic membrane for application in pervaporation |
Authors: | Nora, Jullok Martínez, Rodrigo Wouters, Christine Luis, Patricia Sanz, María Teresa Bruggen, Bart Van der nora.jullok@cit.kuleuven.be |
Keywords: | Biologically inspired Hydrophobic membrane Aroma compounds |
Issue Date: | Feb-2013 |
Publisher: | American Chemical Society |
Citation: | Langmuir, vol. 29(5), 2013, pages 1510-1516 |
Abstract: | An artificial polydimethylsiloxane/polyphenylsulfone (PDMS/PPSU) membrane, which emulates the hydrophobic behavior of natural membranes, was synthesized. Hydrophobicity was achieved by coating the membrane surface sublayer using conventional silicon material, which imitates the character of epicuticular wax (EW) of Prunus laurocerasus L. leaves. It was then applied as a separation medium in pervaporation (PV) of diluted mixtures of ethyl acetate and aroma compounds. The membrane's biomimetic characteristics were evaluated using surface morphology analyses, that is, Fourier transform infrared (FTIR), water contact angle measurements, and SEM imaging. A comparison of properties of the membranes synthesized in this work against selected hydrophobic plant leaves indicated a good agreement. PV using these biologically inspired artificial membranes demonstrated preference for the permeation of ethyl acetate. Besides intrinsic characteristics, it was also observed that the chemical potential is highly influential in activating sorption, diffusion, and desorption of a specific compound. |
Description: | Link to publisher's homepage at http://www.acs.org/ |
URI: | http://pubs.acs.org/doi/abs/10.1021/la3050253 http://dspace.unimap.edu.my:80/dspace/handle/123456789/33867 |
ISSN: | 0743-7463 |
Appears in Collections: | Nora Jullok, Assoc. Prof. Dr. School of Bioprocess Engineering (Articles) |
Files in This Item:
File | Description | Size | Format | |
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A biologically inspired hydrophobic membrane for application in pervaporation.pdf | 9.84 kB | Adobe PDF | View/Open |
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