Please use this identifier to cite or link to this item:
|Title:||Exploring Torlon/P84 co-polyamide-imide blended hollow fibers and their chemical cross-linking modifications for pervaporation dehydration of isopropanol||Authors:||Teoh, M.M.
Dehydration of isopropanol
Torlon/P84 co-polyamide-imide blends
|Issue Date:||15-Jul-2008||Citation:||Teoh, M.M., Chung, T.-S., Wang, K.Y., Guiver, M.D. (2008-07-15). Exploring Torlon/P84 co-polyamide-imide blended hollow fibers and their chemical cross-linking modifications for pervaporation dehydration of isopropanol. Separation and Purification Technology 61 (3) : 404-413. ScholarBank@NUS Repository. https://doi.org/10.1016/j.seppur.2007.12.002||Abstract:||A research study has been conducted to fabricate and chemically modify Torlon® 4000T and Torlon/P84 co-polyamide-imide blended hollow fibers as new materials for the dehydration of isopropanol (IPA). It has been found that Torlon/P84 blends are miscible, as confirmed through the single glass transition temperatures (Tgs) detected by differential scanning calorimetry (DSC). Both pure and blended hollow fibers fabricated from the dry-jet wet-spinning process do not show sufficient resistance to suppress water and IPA induced swelling, whereas cross-linked pure Torlon hollow fibers show only marginal improvement. However, the Torlon/P84 blended fibers display enhanced separation performance after chemical cross-linking modification with the aid of p-xylenediamine. It is believed that the p-xylenediamine induced cross-linking reactions result in greater chain packing and the reduction of free volume. The highest separation factor obtained was 185 ± 8 for the 85/15 wt.% IPA/H2O feed solution and the total permeation flux obtained was 1000 ± 45 g/m2 h. © 2007 Elsevier B.V. All rights reserved.||Source Title:||Separation and Purification Technology||URI:||http://scholarbank.nus.edu.sg/handle/10635/88885||ISSN:||13835866||DOI:||10.1016/j.seppur.2007.12.002|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Oct 17, 2019
WEB OF SCIENCETM
checked on Oct 10, 2019
checked on Oct 12, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.