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Diazotized polyamide membranes on commercial polyethylene textile with simultaneously improved water permeance, salt rejections and anti-fouling - ScienceDirect
Source: www-sciencedirect-com-s.tsgvpn.ky.zstu.edu.cn
Article summary:
1. Ultrathin (~5 and ~9 μm) polyethylene (PE) textile with highly porous and inter-connected pore structures were used to constitute the PA–TFC desalination membranes.
2. Diazotization utilizes the nucleophilic aryl substitution reaction between the diazonium salt and residual aromatic to covalently graft a PA layer, resulting in improved water permeance, salt rejections and anti-fouling performances.
3. Two-dimensional (2D) grazing incidence wide-angle X-ray scattering (GIWAXS) demonstrated the crystallization behavior of PA layer by diazotization, suggesting that the perpendicular “T-shaped” configuration might be associated with optimal desalination performance of the TFC5–N membrane.
Article analysis:
This article is generally reliable and trustworthy as it provides detailed information on how diazotized polyamide membranes can be used on commercial polyethylene textile to improve water permeance, salt rejections and anti-fouling performances. The article is well written and provides evidence for its claims through experiments such as interfacial polymerization (IP) reaction, reverse osmosis (RO), forward osmosis (FO), two-dimensional (2D) grazing incidence wide-angle X-ray scattering (GIWAXS). The article also presents both sides of the argument equally by discussing potential challenges for polyamide thin–film composite (TFC) desalination membranes before introducing its proposed solution.
The only potential bias in this article is that it does not explore any counterarguments or alternative solutions to improving water permeance, salt rejections and anti-fouling performances other than using diazotized polyamide membranes on commercial polyethylene textile. Additionally, there is no mention of possible risks associated with using this method which should be noted in order to provide a more comprehensive overview of this topic.