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 Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle

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)
  |  
PDF [3285 KB, uploaded 24 January 2019]
  |  

Abstract

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
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

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.

Show more citation formats Show less citations formats

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

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Membranes EISSN 2077-0375 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top