Please use this identifier to cite or link to this item:
|Title:||Study on multi-layer composite hollow fiber membranes for gas separation|
|Authors:||Shieh, J.-J. |
Multilayer composite membrane
|Citation:||Shieh, J.-J., Chung, T.-S., Paul, D.R. (1999-01-22). Study on multi-layer composite hollow fiber membranes for gas separation. Chemical Engineering Science 54 (5) : 675-684. ScholarBank@NUS Repository. https://doi.org/10.1016/S0009-2509(98)00256-5|
|Abstract:||Novel multi-layer composite hollow fiber membranes were prepared using silicone rubber, poly(4-vinylpyridine) and polysulfone as sealing layer, selective layer and support layer, respectively. The resultant composite membranes possess a different structural configuration from the conventional multilayer composite membranes, i.e. (sealing layer)/(selective layer)/(support layer) versus (selective layer)/(gutter layer)/(support layer). The new membrane structure lead to high performance membranes for gas separation applications. For example, the polysulfone hollow fiber membrane coated from a 3 wt% silicone rubber solution and a 0.2 wt% poly(4-vinylpyridine) solution had an O2 permeance of 6.69 x 10-6 cm3(STP)/cm2 s cmHg with O2/N2 selectivity of 7.26. From the permeation results of polysulfone hollow fibers coated with poly(4-vinylpyridine) and SEM photo micrographs, it was concluded that the surface of poly(4-vinylpyridine) layer was defective and the high membrane performance was rendered only after coating with a silicone rubber layer. The analysis by a resistance model suggested that the poly(4-vinylpyridine) layer comprised most of the resistance(99%) and provided the separation performance. The surface porosity of the polysulfone support layer and the permeability of poly(4-vinylpyridine) can also be roughly calculated by applying the resistance model.|
|Source Title:||Chemical Engineering Science|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Dec 11, 2018
WEB OF SCIENCETM
checked on Dec 3, 2018
checked on Dec 7, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.