Articles & Issues
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- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
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Received May 19, 2023
Accepted November 12, 2023
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Chemical Stability and Additive Leach Out in Polyethersulfone Membranes Blended with Dragon Blood Resin: An Investigative Study
Abstract
Dragon blood resin (DBR) has been reported as an eff ective bio-based additive for polymeric membrane fabrication. It
improves permeability and antifouling properties, but its weak chemical bond makes it susceptible to leaching. This study
investigates the chemical stability and leaching behavior of polyethersulfone (PES) membranes modifi ed with DBR in an
alkaline solution. The study involved immersing two types of PES-based membranes, one loaded with 3% DBR (M-3) during
the fabrication and one without (M-0), in a 0.01-N NaOH solution for 5 days. The results show that M-0 had good resistance
to high alkaline solutions, while M-3 was less stable. Pure water permeability and water contact angle increased with
immersion time, with an average percentage increase of 90.74 and 19.48%, respectively. The leaching of DBR from the PES
membrane could be attributed to its polarity and the breaking of the DBR bonds, causing them to break apart into smaller
molecules. The leaching of DBR also leaves a void that increases the pore size. This report provides useful information for
the optimal design of a bio-based PES membrane.
