Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
6.6
5.0
Journals
Polymers
Special Issues
Advances of Poly- and Nano-Based Membranes in Separation Processes
share announcement

Advances of Poly- and Nano-Based Membranes in Separation Processes

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Membranes and Films".

Deadline for manuscript submissions: closed (15 September 2021) | Viewed by 5916

Special Issue Editor

Dr. Irshad Kammakakam

E-Mail Website1 Website2
Guest Editor
Center of Advanced Membranes and Porous Materials (AMPM), King Abdullah University of Science and Technology, Thuwal 23955, Saudi Arabia
Interests: ionic liquids; poly(IL) membranes; ionenes; gas separation; CO2 capture; poly(ethylene oxide)s; poly(dimethylsiloxane)s; polymers of intrinsic microporosity (PIMs); nanofiber membranes; interfacial polymerization; crosslinked membranes; water filtration; fuel cells; Li-ion batteries
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Improving the efficiency of separation processes is of great interest and an enduring challenge in chemical, energy, and environmental processes. Membrane technology utilizing polymeric and nanofiller materials has made significant contributions to process intensification strategies in many industrial applications such as gas separation, liquid/liquid separation, CO2 capture, water purification, and self-healing and shape-memory properties in energy conversion and storage, etc. The scope of this Special Issue includes all aspects of polymeric- and nano-based membranes such as mathematical modelling, synthesis, processing, structural–property relations, and their mode of configurations as thin films, flat-sheet membranes, hollow fibre membranes and composite membranes to overcome diverse industrial as well as domestic difficulties. While the main purpose of this Special Issue is to give an overview of high-quality research across the breadth of polymeric- and nanomaterial-based membranes for separation technology, the application of particular interest also extends to energy electronics, 3D-printing feeds, coatings, catalysis, etc.

Dr. Irshad Kammakakam
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. Polymers is an international peer-reviewed open access semimonthly 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 2700 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

  • polymers
  • nanomaterials
  • membrane separations
  • composites
  • thin films
  • hollow fibers
  • mixed matrix membranes
  • interfacial polymerization
  • transport properties
  • gas separation
  • liquid/liquid separation
  • water purification
  • CO2 capture
  • ergy storage
  • energy conversion

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

14 pages, 1965 KiB  
Article
Critical Thickness of Free-Standing Nanothin Films Made of Melted Polyethylene Chains via Molecular Dynamics
by José Antonio González-Mijangos, Enrique Lima, Roberto Guerra-González, Fernando Iguazú Ramírez-Zavaleta and José Luis Rivera
Polymers 2021, 13(20), 3515; https://doi.org/10.3390/polym13203515 - 13 Oct 2021
Cited by 3 | Viewed by 1301
Abstract
The mechanical stability of nanothin free-standing films made of melted polyethylene chains was predicted via molecular dynamics simulations in the range of 373.15–673.15 K. The predicted critical thickness, tc, increased with the square of the temperature, T, with additional chains [...] Read more.
The mechanical stability of nanothin free-standing films made of melted polyethylene chains was predicted via molecular dynamics simulations in the range of 373.15–673.15 K. The predicted critical thickness, tc, increased with the square of the temperature, T, with additional chains needed as T increased. From T = 373.15 K up to the thermal limit of stability for polyethylene, tc values were in the range of nanothin thicknesses (3.42–5.63 nm), which approximately corresponds to 44–55 chains per 100 nm2. The density at the center of the layer and the interfacial properties studied (density profiles, interfacial thickness, and radius of gyration) showed independence from the film thickness at the same T. The polyethylene layer at its tc showed a lower melting T (<373.15 K) than bulk polyethylene. Full article
(This article belongs to the Special Issue Advances of Poly- and Nano-Based Membranes in Separation Processes)
►▼ Show Figures

Graphical abstract

13 pages, 12691 KiB  
Article
Removal of Oily Contaminants from Water by Using the Hydrophobic Ag Nanoparticles Incorporated Dopamine Modified Cellulose Foam
by Nadeem Baig and Irshad Kammakakam
Polymers 2021, 13(18), 3163; https://doi.org/10.3390/polym13183163 - 18 Sep 2021
Cited by 15 | Viewed by 1914
Abstract
The presence of oil-related contaminants in water has emerged as a severe threat to the environment. The separation of these contaminants from water has become a great challenge, and extensive efforts are being made to develop suitable, environmentally friendly materials. Highly hydrophobic materials [...] Read more.
The presence of oil-related contaminants in water has emerged as a severe threat to the environment. The separation of these contaminants from water has become a great challenge, and extensive efforts are being made to develop suitable, environmentally friendly materials. Highly hydrophobic materials are effective in the selective separation of oil from water. In this work, silver (Ag)-incorporated, highly hydrophobic dopamine-modified cellulose sponge was prepared by functionalizing with the range of alkyl silanes. The Ag nanoparticle-incorporated dopamine provided the appropriate roughness, whereas the alkyl component provided the low surface energy that made it selective towards oil. It was found that the alkyl groups with a longer chain length were more effective in enhancing the hydrophobicity of the Ag nanoparticle-incorporated, dopamine-modified cellulose. The developed materials were characterized by Fourier transform infrared spectroscopy (FTIR), field emission-scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), elemental mapping, and contact angle goniometry. The maximum water contact angle on the functionalized surfaces was observed at 148.4°. The surface of the C18s-Ag-DA-Cell-F showed excellent selectivity towards the oily component that rapidly permeated, and water was rejected wholly. The developed material showed a separation efficiency of 96.2% for the oil/water mixture. The C18s-Ag-DA-Cell-F material showed excellent reusability. Due to their environmentally friendly nature, excellent selectivity, and good separation efficiency, the functionalized cellulose materials can be used to separate oil and water effectively. Full article
(This article belongs to the Special Issue Advances of Poly- and Nano-Based Membranes in Separation Processes)
►▼ Show Figures

Graphical abstract

13 pages, 1397 KiB  
Article
Hollow Fiber Polyimide Membranes Prepared in a Triple Orifice Spinneret: Effect of a Reduced Water Activity in the Bore Fluid on the Gas Separation Performance
by Paola Bernardo, Franco Tasselli and Gabriele Clarizia
Polymers 2021, 13(13), 2211; https://doi.org/10.3390/polym13132211 - 04 Jul 2021
Cited by 2 | Viewed by 1968
Abstract
Polyimide-based hollow fibers were spun using a triple orifice spinneret in order to apply them in gas separation. The membrane structure was tailored producing a porous external layer and a thin internal skin layer, that controlled the gas transport. The measurement of gas [...] Read more.
Polyimide-based hollow fibers were spun using a triple orifice spinneret in order to apply them in gas separation. The membrane structure was tailored producing a porous external layer and a thin internal skin layer, that controlled the gas transport. The measurement of gas permeation rates and the morphological analysis were combined to obtain information on the performance of the membranes. The aim was to tune the inner top layer and investigate the role of the bore fluid on the gas permeation properties of the membranes. The bore fluid composition was explored by using water mixtures containing the solvent used for preparing the dope solution or a salt in order to reduce the water activity in the inner coagulant, but also a low amount of a crosslinker for improving the gas selectivity. The change of the dope flow-rate was also analyzed. At moderate dope flow-rates, the use of a saline water solution as bore fluid is more effective in enhancing the membrane gas selectivity with respect to a bore fluid containing certain amounts of solvent. This option represents a green approach for the preparation of the membrane. The behavior of the prepared hollow fibers over time (physical aging) in gas permeation was discussed. Full article
(This article belongs to the Special Issue Advances of Poly- and Nano-Based Membranes in Separation Processes)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop