Ahmad, A. L. and Mohd Nawawi, M. G. and So, L. K. (2006) Characterization and performance evaluations of sodium zeolite-Y filled chitosan polymeric membrane : effect of sodium zeolite-Y concentration. Journal of Applied Polymer Science, 99 (4). pp. 1740-1751. ISSN 0021-8995
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Official URL: http://dx.doi.org/10.1002/app.22703
Sodium zeolite-Y (NaY zeolite) filled chitosan polymeric membranes were developed and characterized. The impact of adding different concentrations of NaY zeolite into the homogeneous chitosan membrane was investigated. The surface morphology, mechanical-physical properties, sorption, and pervaporation performance for the dehydration of isopropanol-water mixture separation by the pervaporation process were studied and evaluated. A homogeneous chitosan membrane showed preferential water sorption and permeation compared to isopropanol. The optimum concentration of NaY zeolite added to the homogeneous chitosan membrane was 0.4 wt %, which showed that the dispersion of the NaY zeolite was the most homogeneous and finely covered by the chitosan polymer in the zeolite-chitosan polymer interface. The tensile strength and percent strain at maximum of this membrane were 59.347 MPa and 27.5%, respectively. The sorption experiments showed that the degree of swelling was 6.54% with 1.01 wt % isopropanol sorbed in these membranes. The pervaporation separation tests demonstrated that the NaY zeolite filled chitosan membrane was capable for isopropanol-water mixture separation and improved the pervaporation separation index from 272 (homogeneous chitosan membrane) to 2687.
|Uncontrolled Keywords:||swelling, membranes, zeolites, strain|
|Divisions:||Chemical and Natural Resources Engineering (Formerly known)|
|Deposited By:||Nurunnadiah Baharum|
|Deposited On:||27 Jul 2009 03:28|
|Last Modified:||27 Jul 2009 03:28|
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