Please use this identifier to cite or link to this item:
Title: In-situ synthesis and cross-linking of polyamide thin film composite (TFC) membranes for bioethanol applications
Authors: Zuo, J.
Lai, J.-Y.
Chung, T.-S. 
Keywords: Cross-linking
Issue Date: 15-May-2014
Citation: Zuo, J., Lai, J.-Y., Chung, T.-S. (2014-05-15). In-situ synthesis and cross-linking of polyamide thin film composite (TFC) membranes for bioethanol applications. Journal of Membrane Science 458 : 47-57. ScholarBank@NUS Repository.
Abstract: A novel and effective two-step approach has been developed to fabricate cross-linked polyamide thin film composite (TFC) membranes for pervaporation dehydration of bioethanol. The first step is to in situ graft the cross-linker toluene 2,4-diisocyanate (TDI) into the polyamide selective layer during the interfacial polymerization while the second step is to produce the TDI cross-linked TFC membrane by post thermal annealing. The physicochemical properties and membrane structure of the newly developed TFC membranes were investigated in-depth by various characterization techniques such as X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectrometry and positron annihilation spectroscopy (PAS). The cross-linked TFC membranes overcome the swelling issue of conventional TFC membranes and exhibit much enhanced separation performance. The membranes can also function well at elevated temperatures. An impressive flux of 6.80kg/m2-h with a separation factor of 61 for the dehydration of 85/15wt% ethanol/water mixtures is achieved at 80°C. These excellent membranes and the simple processing method may bring about ground-breaking changes to the molecular design of modern pervaporation membranes. © 2014 Elsevier B.V.
Source Title: Journal of Membrane Science
ISSN: 03767388
DOI: 10.1016/j.memsci.2014.01.041
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.