Special Issue "Nanocomposite Membranes"
A special issue of Membranes (ISSN 2077-0375).
Deadline for manuscript submissions: closed (30 November 2013)
Prof. Dr. Boguslaw Kruczek
Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, ON K1N 6N5, Canada
Phone: +1 613 562 5800
Fax: +1 613 562 5172
Interests: gas separation; nanocomposite membranes; zeolite membranes; membrane characterization systems; time lag methods; membrane transport; transport phenomena in membrane characterization
Driven by new developments and innovations in material science and process technologies, membranes have become an integral part of today’s separation processes. The global demand on membrane modules in 2012 reached 15.6 billion USD, and is expected to grow annually by 8% in the next years. Most of commercially utilized synthetic membranes are made of organic polymers. On the other hand, because of inherent trade-off between the productivity and selectivity of organic polymer membranes, the main focus of membrane research in the recent years has concentrated on development of new materials that can overcome this performance limitation. Nanocomposite membranes appear to be the most promising solution.
The term “nanocomposites” is generally associated (but not limited to) with inorganic (porous or nonporous) nanoparticles dispersed within a continuous phase of organic polymer. The nanofillers act to create preferential permeation pathways for selective transport while posing a barrier for undesired transport. The success of nanocomposite membranes depends on the interfacial quality between the nanoparticles and the organic polymer. This interfacial quality can be improved by chemical modifications of the host polymer matrix and/or the inorganic nanofillers. Both rubbery and glassy polymers have been utilized as the organic matrix in nanocomposites. Also, a wide variety of nanoparticles have been tested as inorganic nanofillers. The latter include, metal oxides (e.g., TiO2, Al2O3, SiO2, MgO, AgO, Fe3O4), pure metals (e.g., nanosilver), zeolites (e.g., ZSM-5, silicalate-1, zeolite 4A), nanosized macromer polyoctahedral oligomeric silsesquioxanes (POSS), carbon nanoparticles (e.g., carbon nanotubes, C60 flullerens), and mineral clays. These nanoscale fillers are typically prepared ex situ and then introduced to the casting mixture, but also in some cases it is possible to generate them in situ from precursors. Nanocomposite membranes have been considered in virtually all membrane processes including some novel membrane-based applications.
This Special Issue offers a perfect site to document state-of-the-art developments and innovations in nanocomposite membranes ranging from material development and characterization of properties to novel membrane applications and transport modeling. Authors are therefore invited to submit their latest results; both original papers and reviews are welcome.
Prof. Dr. Boguslaw Kruczek
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. Papers will be published continuously (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as 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 refereed through a 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 quarterly 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 300 CHF (Swiss Francs). English correction and/or formatting fees of 250 CHF (Swiss Francs) will be charged in certain cases for those articles accepted for publication that require extensive additional formatting and/or English corrections.
- polymer-based nanocomposites
- nanocomposites in inorganic matrix
- synthesis of nanocomposite membranes
- transport in nanocomposite membranes
- gas permeation
- reverse osmosis
- forward osmosis
- membrane distillation
- fuel cells
Article: Study of Hydrophilic Electrospun Nanofiber Membranes for Filtration of Micro and Nanosize Suspended Particles
Membranes 2013, 3(4), 375-388; doi:10.3390/membranes3040375
Received: 24 July 2013; in revised form: 18 October 2013 / Accepted: 21 October 2013 / Published: 14 November 2013| Download PDF Full-text (1218 KB) | Download XML Full-text
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Study of Hydrophilic Electrospun Nanofiber Membranes for Filtration of Micro and Nanosize Suspended Particles
Authors: N. Nuraje 1,*, H. Muppalla 2, Z. Veisi 2, W.S. Khan 2, H. Misak 2, A. Asaduzzaman 3 and R. Asmatulu 2,*
Affiliation: 1 Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
2 Department of Mechanical Engineering; 3Department of Electrical Engineering and Computer Science, Wichita State University, 1845 Fairmount, Wichita, KS 67260, USA
* Authors to whom correspondence should be addressed; E-Mails: email@example.com (N.N.); firstname.lastname@example.org (R.A.)
Abstract: Polymeric nanofiber membranes of polyvinyl chloride (PVC) blended with polyvinylpyrrolidone (PVP) were developed using an electrospinning process at different conditions and studied for the filtration of three different liquid suspensions. The targetted suspensions include the lake water, abrasive particles from a water jet cutter, and suspended magnetite nanoparticles to determine the efficiency of the filter membranes. The research work was to create highly hydrophilic nanofiber membranes and utilize them to filter the suspended liquids at an optimal level of purification (i.e., drinkable level if not contaminated by chemical agents). In order to overcome the fouling/biofouling problems of the membrane, coagulation, which enhances the efficiency of the membrane in the removal of colloidal particles, was used as a pre-treatment process. Two coagulants, Tanfloc and Alum, were chosen during the coagulation process. The removal efficiency of the suspended particles in the liquids was measured in terms of turbidity, pH, and total dissolved solids (TDS). It was observed that the coagulation/filtration experiments have shown higher efficiency in the removal of turbidity compared to the direct filtration process performed without any coagulation and filter media.
Type of Paper: Review
Title: Mixed Matrix Membranes: An Analysis of Filler-Polymer Combinations for Target Gas Separations
Author: M.G. Buonomenna
Affiliation: Ordine dei Chimici della Campania, Via A. Tari, 22 80138 Napoli, Italy; E-Mail: email@example.com
Abstract: The key parameters for gas separations employing membranes are the permeability of a specific component of the gas mixture and the selectivity. Membrane gas separation employing polymeric membranes has been commercially used since the 1970s generating a significant amount of academic and industrial research activity. It was recognized that an empirical upper limit (the well-known “upper bound”) for the combined selectivity and permeability exists : the selectivity generally decreases with increasing permeability of the more permeable gas component. Several approaches have been demonstrated to easily exceed the upper bound . Molecular sieve membranes with well-defined uniform pore structure would be considered to be the true upper bound limit for polymeric membranes. Recently, McKeown et al  reported gas permeability and selectivity of a new molecular-sieving microporous glassy polymer: the new polymer-based films demonstrate exceptional performance as molecular sieves for smaller gas molecules, such as hydrogen and oxygen, over larger molecules, such as nitrogen and methane. Another approach, initially proposed by Koros et al , is typically referred to as mixed matrix approach where selective molecular sieving structures (zeolites, ZIFs, mesoporous oxides, carbon molecular sieves, etc) are incorporated into a polymeric matrix. This last approach has been reported in many studies with gas separation performance beyond the upper bound . It has been found that the performance of mixed matrix membranes is not a simple addition of the intrinsic properties of the individual phases (i.e. polymer and filler) and a proper combination of polymer and filler particles is at the basis of outstanding gas separation performance.
In the present paper, an analysis of the best combinations polymer/filler for mixed matrix membranes for industrially relevant gas pairs, such as CO2/CH4, CO2/N2, H2/CH4, O2/N2 is given.
References:  L.M. Robeson, J.Membr. Sci. 62 (1991) 165-185; L.M. Robeson, J. Membr. Sci. 320 (2008) 390.
 M. Carta, R. Malpass-Evans, M. Croad, Y. Rogan, J.C. Jansen, P. Bernardo, F. Bazzarelli, N.B. Mckeown, Science, 339 (2013) 303.
 C.M. Zimmerman, A. Singh, W.J. Koros, J.Membr. Sci. 137 (1997) 145.
 N. Widjojo, Y. Li, L. Jiang and T.S. Chung, Recent Progress and Challenges on Mixed Matrix Membranes in Both Material and Configuration Aspects for Gas Separation in Advanced materials for membrane preparation, 2012, Eds. Buonomenna, M.G. and Golemme G., Bentham Science Publishers, Sharjah, U.A.E.; J.P. Ferraris, I.H. Musselman and K.J. JR. Balkus, Mixed Matrix Membranes Based on Metal-Organic Frameworks in Advanced materials for membrane preparation, 2012, Eds. Buonomenna, M.G. and Golemme G., Bentham Science Publishers, Sharjah, U.A.E.
Last update: 28 June 2013