Enhanced carbon dioxide separation by polyethersulfone (PES) mixed matrix membranes deposited with clay

Ismail N. M. and Ismail A. F and Mustafa A and Zulhairun A.K and Nordin N. A. H. M (2016) Enhanced carbon dioxide separation by polyethersulfone (PES) mixed matrix membranes deposited with clay. Journal of Polymer Engineering, 36 (1). pp. 65-78. ISSN 2191-0340

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Abstract

Asymmetric mixed matrix membranes (MMMs) incorporating Cloisite15A (C15A) clay particles were prepared using solvent evaporation and phase inversion with polyethersulfone (PES) as the membrane matrix. C15A loadings varied at 1 wt% and 5 wt%. Membrane morphological and thermal properties were evaluated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Addition of the C15A favorably altered the microscopic structure of membranes from finger-like to homogeneous sponge-like structure as the loading increased. While the amorphous nature of MMMs was retained, the thermal stability was also found to be improved with a slight decrease in glass transition temperature (Tg). PES/C15A1 MMM showed the best gas transport properties, with 37% and 65% improvement in CO2 permeance and CO2/CH4 selectivity, respectively. Unlike 1 wt%, the loss in selectivity shown by 5 wt% clay loadings suggested that the interphase voids and extent of silicate layers dispersion play a significant role in the overall performance of MMMs.

Item Type: Article
Keyword: clay, exfoliation, gas permeation, mixed matrix membrane, polyethersulfone
Subjects: T Technology > TP Chemical technology
Department: FACULTY > Faculty of Engineering
Depositing User: ADMIN ADMIN
Date Deposited: 12 Aug 2016 11:32
Last Modified: 23 Oct 2017 13:45
URI: https://eprints.ums.edu.my/id/eprint/13844

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