Incorporation of inorganic carbon nanotubes fillers into the CA polymeric matrix for improvement in CO2/N2 separation

Jawad, Z. A.; Ahmad, A. L.; Low, S. C.; Zein, S. H.S.

Abstract

Among all separation techniques, membrane technology has been shown to reduce CO 2 emissions without any phase changes due to its rapid, energy efficient process. The membrane-based gas separation must consist of a defect-free, thin, dense skin layer that is supported by a porous sub-layer that allows an excellent permeation rate and selectivity. This study is aimed at developing a defect-free, thin-skinned layer of mixed matrix membrane (MMM) from cellulose acetate (CA) polymer and functionalized multi walled carbon nanotubes (MWCNTs) as inorganic filler. The influences of membrane casting thickness (150-300) μm and CA polymer concentration (7-17) wt.% on membrane morphologies were first investigated. The outcome of these dominant parameters were then used to synthesize the MMM. The results showed that the defect-free, thin, dense skin thickness of membrane could be achieved with a casting thickness of 250 μm and CA polymer concentration of 10 wt.%. By considering both dominant parameters, the synthesized MMM proved to have a thin selective layer, whereby it showed a high permeance and selectivity for CO 2 /N 2 gas separation.

Citation

Jawad, Z. A., Ahmad, A. L., Low, S. C., & Zein, S. H. (2015). Incorporation of inorganic carbon nanotubes fillers into the CA polymeric matrix for improvement in CO2/N2 separation. Current nanoscience, 11(1), 69-79. https://doi.org/10.2174/1573413710666140922224633

• Journal Article Type: Article
• Acceptance Date: Sep 20, 2014
• Online Publication Date: Feb 1, 2020
• Publication Date: 2015
• Deposit Date: Jul 6, 2020
• Journal: Current Nanoscience
• Print ISSN: 1573-4137
• Publisher: Bentham Science Publishers
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Issue: 1
• Pages: 69-79
• DOI: https://doi.org/10.2174/1573413710666140922224633
• Keywords: Cellulose acetate membrane; Characterization; Gas separation; Mixed matrix membrane; Thin dense skin layer
• Public URL: https://hull-repository.worktribe.com/output/549819
• Publisher URL: https://www.eurekaselect.com/124833/article