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Membranes
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Ultrafiltration Polymeric Membranes
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Ultrafiltration Polymeric Membranes

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Polymeric Membranes".

Deadline for manuscript submissions: closed (15 November 2020) | Viewed by 4231

Special Issue Editor

Dr. Ali Javadi

E-Mail Website
Guest Editor
Performance Coatings Group, The Sherwin-Williams Company, 4440 Warrensville Ctr Rd., Warrensville Heights, OH 44128, USA
Interests: polymers; coatings; optical polymers; membranes; organic chemistry

Special Issue Information

Dear Colleagues,

Membrane technology is known as the most important separation process because of high efficiency and low cost. Ultrafiltration (UF), as a low-pressure filtration process, has been widely used for effective filtration of colloids, viruses, proteins, metal hydroxides, etc. The unique advantages of UF membranes include low operating pressure and temperature as well as no phase change. The desirable UF membranes should be of high flux and selectivity. Several polymeric materials, including polysulfone, polyethersulfone, cellulose acetate, polyvinylidene fluoride, polyamide, and polyacrylonitrile, have been extensively used for preparation of UF membranes.

This Special Issue on “Ultrafiltration Polymeric Membranes” seeks contributions to assess the state-of-the-art and future developments in the field of ultrafiltration membranes based on polymeric materials. Topics include but are not limited to general principles, designs, processes, polymer types and interactions, operating parameters, and applications.

Dr. Ali Javadi
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Membranes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Membrane
  • Ultrafiltration
  • Polymer
  • Separation
  • Process

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Published Papers (1 paper)

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Research

15 pages, 8082 KiB  
Article
Rapid Surface Modification of Ultrafiltration Membranes for Enhanced Antifouling Properties
by Noresah Said, Ying Siew Khoo, Woei Jye Lau, Mehmet Gürsoy, Mustafa Karaman, Teo Ming Ting, Ebrahim Abouzari-Lotf and Ahmad Fauzi Ismail
Membranes 2020, 10(12), 401; https://doi.org/10.3390/membranes10120401 - 7 Dec 2020
Cited by 18 | Viewed by 3478
Abstract
In this work, several ultrafiltration (UF) membranes with enhanced antifouling properties were fabricated using a rapid and green surface modification method that was based on the plasma-enhanced chemical vapor deposition (PECVD). Two types of hydrophilic monomers—acrylic acid (AA) and 2-hydroxyethyl methacrylate (HEMA) were, [...] Read more.
In this work, several ultrafiltration (UF) membranes with enhanced antifouling properties were fabricated using a rapid and green surface modification method that was based on the plasma-enhanced chemical vapor deposition (PECVD). Two types of hydrophilic monomers—acrylic acid (AA) and 2-hydroxyethyl methacrylate (HEMA) were, respectively, deposited on the surface of a commercial UF membrane and the effects of plasma deposition time (i.e., 15 s, 30 s, 60 s, and 90 s) on the surface properties of the membrane were investigated. The modified membranes were then subjected to filtration using 2000 mg/L pepsin and bovine serum albumin (BSA) solutions as feed. Microscopic and spectroscopic analyses confirmed the successful deposition of AA and HEMA on the membrane surface and the decrease in water contact angle with increasing plasma deposition time strongly indicated the increase in surface hydrophilicity due to the considerable enrichment of the hydrophilic segment of AA and HEMA on the membrane surface. However, a prolonged plasma deposition time (>15 s) should be avoided as it led to the formation of a thicker coating layer that significantly reduced the membrane pure water flux with no significant change in the solute rejection rate. Upon 15-s plasma deposition, the AA-modified membrane recorded the pepsin and BSA rejections of 83.9% and 97.5%, respectively, while the HEMA-modified membrane rejected at least 98.5% for both pepsin and BSA. Compared to the control membrane, the AA-modified and HEMA-modified membranes also showed a lower degree of flux decline and better flux recovery rate (>90%), suggesting that the membrane antifouling properties were improved and most of the fouling was reversible and could be removed via simple water cleaning process. We demonstrated in this work that the PECVD technique is a promising surface modification method that could be employed to rapidly improve membrane surface hydrophilicity (15 s) for the enhanced protein purification process without using any organic solvent during the plasma modification process. Full article
(This article belongs to the Special Issue Ultrafiltration Polymeric Membranes)
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