Next Article in Journal
Membrane Fouling Due to Protein—Polysaccharide Mixtures in Dead-End Ultrafiltration; the Effect of Permeation Flux on Fouling Resistance
Next Article in Special Issue
Polymer of Intrinsic Microporosity (PIM-1) Membranes Treated with Supercritical CO2
Previous Article in Journal
Perfluoropolymer/Molecular Sieve Mixed-Matrix Membranes
Previous Article in Special Issue
Performance of Void-Free Electrospun SPEEK/Cloisite as a Function of Degree of Dispersion State on Nanocomposite Proton Exchange Membrane for Direct Methanol Fuel Cell Application
Article

Preparation of Layer-by-Layer Nanofiltration Membranes by Dynamic Deposition and Crosslinking

1
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
2
Department of Chemical Engineering, The University of Melbourne, Parkville, VIC 3010, Australia
*
Author to whom correspondence should be addressed.
Membranes 2019, 9(2), 20; https://doi.org/10.3390/membranes9020020
Received: 17 December 2018 / Revised: 9 January 2019 / Accepted: 11 January 2019 / Published: 24 January 2019
(This article belongs to the Special Issue Mass Transfer in Membranes)
In recent decades, the advancements in layer-by-layer (LBL) assembly technology have provoked increasing interest in the preparation of multilayer polyelectrolyte membranes with excellent performance. In the current study, a novel nanofiltration (NF) membrane was prepared by pressure-driven layer-by-layer (LBL) assembly of polyethylenimine (PEI) and polyacrylicacid (PAA) on a porous substrate with chemical crosslinking. The effect of deposition pressure on separation performance of the prepared membranes was studied. The surface morphology, hydrophilicity and the charge property of the dynamically-deposited membranes were compared with those prepared by static adsorption. The characterization results showed that dynamic deposition process resulted in a smoother membrane surface with improved hydrophilicity. The mechanism of water-path formation was proposed to interpret the effect of pressure on the membrane performance. Glutaraldehyde (GA) was used as a crosslinker to reduce the number of polyelectrolyte bilayers for obtaining good separation performance. The rejections of different inorganic salts of the dynamically-deposited NF membrane were also investigated. View Full-Text
Keywords: nanofiltration membrane; polyelectrolyte; dynamic deposition; crosslinking nanofiltration membrane; polyelectrolyte; dynamic deposition; crosslinking
Show Figures

Figure 1

MDPI and ACS Style

Liu, Y.; Chen, G.Q.; Yang, X.; Deng, H. Preparation of Layer-by-Layer Nanofiltration Membranes by Dynamic Deposition and Crosslinking. Membranes 2019, 9, 20. https://doi.org/10.3390/membranes9020020

AMA Style

Liu Y, Chen GQ, Yang X, Deng H. Preparation of Layer-by-Layer Nanofiltration Membranes by Dynamic Deposition and Crosslinking. Membranes. 2019; 9(2):20. https://doi.org/10.3390/membranes9020020

Chicago/Turabian Style

Liu, Yan, George Q. Chen, Xiuli Yang, and Huining Deng. 2019. "Preparation of Layer-by-Layer Nanofiltration Membranes by Dynamic Deposition and Crosslinking" Membranes 9, no. 2: 20. https://doi.org/10.3390/membranes9020020

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop