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Effect of surface-etched modification on halloysite nanotubes (HNTs) for polysulfone mixed matrix membrane in CO2/CH4 separation

Jafa, J. and S. M., Anissuzaman and Chiam, C. K. and Bolong, N. and A. R., Razali and A. F., Ismail and N. M., Ismail (2020) Effect of surface-etched modification on halloysite nanotubes (HNTs) for polysulfone mixed matrix membrane in CO2/CH4 separation. In: IOP Conference Series: Materials Science and Engineering, 26th Regional Symposium on Chemical Engineering (RSCE 2019), 30 Oktober-1 November 2019 , Kuala Lumpur, Malaysia. pp. 1-10., 778 (012163). ISSN 1757-8981 (Print), 1757-899X (Online)

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Mixed matrix membranes (MMMs) were fabricated from a 25 wt% of polysulfone (PSf) with halloysite nanotubes (HNTs) selected as the inorganic filler. The incorporation of 1 wt% to 5 wt% of HNTs in the membrane is promising in improving the performance of the membrane for gas separation due to its barrier properties. HNTs was modified by surface-etched method before it is embedded into the membrane in order to reduce the interfacial defects as well as the agglomeration in the membrane. This study further investigated the improvement of the polymer-clay interface interaction, characterize the functional groups, structure and surface area of the newly modified clay and also mechanical properties of the membrane. From the FTIR spectra, it can be seen that the functional group of surface-etched HNTs reduced in intensities compared to the unmodified HNTs. There are no distinct changes in XRD pattern for both unmodified and modified HNTs and tensile strength shows an increment in MMMs embedded with modified clay compared to unmodified clays. The incorporation of surface-etched HNTs was able to improve the membrane properties to a desired membrane that can be applied in the CO2 and CH4 separation.

Item Type: Conference or Workshop Item (Lecture)
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Mixed matrix membranes (MMMs); Halloysite nanotubes (HNTs); Gas separation; Interfacial defects
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Mechanical & Manufacturing Engineering
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 03 Feb 2021 03:35
Last Modified: 03 Feb 2021 03:35
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