17 results found
Jimenez-Solomon M, Song Q, Jelfs K, et al., 2016, Polymer nanofilms with enhanced microporosity by interfacial polymerization, Nature Materials, Vol: 15, Pages: 760-767, ISSN: 1476-4660
Highly permeable and selective membranes are desirable for energy-efficient gas and liquid separations.Microporous organic polymers have attracted significant attention in this respect owing to their highporosity, permeability, and molecular selectivity. However, it remains challenging to fabricate selectivepolymer membranes with controlled microporosity which are stable in solvents. Here we report a newapproach to designing crosslinked, rigid polymer nanofilms with enhanced microporosity bymanipulating the molecular structure. Ultra-thin polyarylate nanofilms with thickness down to 20 nmwere formed in-situ by interfacial polymerisation. Enhanced microporosity and higher interconnectivityof intermolecular network voids, as rationalised by molecular simulations, are achieved by utilisingcontorted monomers for the interfacial polymerisation. Composite membranes comprising polyarylatenanofilms with enhanced microporosity fabricated in-situ on crosslinked polyimide ultrafiltrationmembranes show outstanding separation performance in organic solvents, with up to two orders ofmagnitude higher solvent permeance than membranes fabricated with nanofilms made from noncontortedplanar monomers.
Jimenez-Solomon MF, Song Q, Jelfs KE, et al., 2016, Polymer nanofilms with enhanced microporosity by interfacial polymerisation for molecular separations
Marchetti P, Solomon MFJ, Szekely G, et al., 2014, Molecular Separation with Organic Solvent Nanofiltration: A Critical Review, CHEMICAL REVIEWS, Vol: 114, Pages: 10735-10806, ISSN: 0009-2665
Kim JF, Szekely G, Schaepertoens M, et al., 2014, In Situ Solvent Recovery by Organic Solvent Nanofiltration, ACS SUSTAINABLE CHEMISTRY & ENGINEERING, Vol: 2, Pages: 2371-2379, ISSN: 2168-0485
Szekely G, Jimenez-Solomon MF, Marchetti P, et al., 2014, Sustainability assessment of organic solvent nanofiltration: from fabrication to application, GREEN CHEMISTRY, Vol: 16, Pages: 4440-4473, ISSN: 1463-9262
Gorgojo P, Jimenez-Solomon MF, Livingston AG, 2014, Polyamide thin film composite membranes on cross-linked polyimide supports: Improvement of RO performance via activating solvent, DESALINATION, Vol: 344, Pages: 181-188, ISSN: 0011-9164
Gorgojo P, Karan S, Wong HC, et al., 2014, Ultrathin Polymer Films with Intrinsic Microporosity: Anomalous Solvent Permeation and High Flux Membranes, Advanced Functional Materials, Vol: 24, Pages: 4729-4737, ISSN: 1616-3028
Organic solvent nanofiltration (OSN) membranes with ultrathin separation layers down to 35 nm in thickness fabricated from a polymer of intrinsic microporosity (PIM-1) are presented. These membranes exhibit exceptionally fast permeation of n-heptane with a rejection for hexaphenylbenzene of about 90%. A 35 nm thick PIM-1 membrane possesses a Young's modulus of 222 MPa, and shows excellent stability under hydraulic pressures of up to 15 bar in OSN. A maximum permeance for n-heptane of 18 Lm−2h−1bar−1 is achieved with a 140 nm thick membrane, which is about two orders of magnitude higher than Starmem240 (a commercial polyimide-based OSN membrane). Unexpectedly, decreasing the film thickness below 140 nm results in an anomalous decrease in permeance, which appears to be related to a packing enhancement of PIM-1, as measured by light interferometry. Further, thermal annealing of the membranes formed from PIM-1 reveals that their permeance is preserved up to temperatures in excess of 150 °C, whereas the permeance of conventional, integrally skinned, asymmetric polyimide OSN membranes decreases significantly when they are annealed under the same conditions. To rationalize this key difference in response of functional performance to annealing, the concept of membranes with intrinsic microporosity (MIMs) versus membranes with extrinsic microporosity (MEMs) is introduced.
Jimenez Solomon MF, Livingston AG, 2014, Thin film composite membranes by interfacial polymerization for Organic Solvent Nanofiltration, Pages: 155-157
Livingston AG, Karan S, Gorgojo P, et al., 2014, Microporosity in organic solvent nanofiltration membranes - Intrinsic or extrinsic?, Pages: 127-128
Jimenez-Solomon MF, Gorgojo P, Munoz-Ibanez M, et al., 2013, Beneath the surface: Influence of supports on thin film composite membranes by interfacial polymerization for organic solvent nanofiltration, JOURNAL OF MEMBRANE SCIENCE, Vol: 448, Pages: 102-113, ISSN: 0376-7388
Jimenez Solomon MF, 2013, Encyclopedia of Membrane Science and Technology, Encyclopedia of Membrane Science and Technology, Editors: Hoek, Tarabara, Publisher: Wiley, ISBN: 9780470906873
Foreword by Professor Menachem Elimelech, Yale University, USA This 3-volume thematic work provides critical assessment of the status and advancements in materials and fabrication of membranes, membrane based processes, and applications ...
Stawikowska J, Jimenez-Solomon MF, Bhole Y, et al., 2013, Nanoparticle contrast agents to elucidate the structure of thin film composite nanofiltration membranes, JOURNAL OF MEMBRANE SCIENCE, Vol: 442, Pages: 107-118, ISSN: 0376-7388
Solomon MFJ, Bhole Y, Livingston AG, 2013, High flux hydrophobic membranes for organic solvent nanofiltration (OSN)-Interfacial polymerization, surface modification and solvent activation, JOURNAL OF MEMBRANE SCIENCE, Vol: 434, Pages: 193-203, ISSN: 0376-7388
Solomon MFJ, Bhole Y, Livingston AG, 2012, High flux membranes for organic solvent nanofiltration (OSN)-Interfacial polymerization with solvent activation, JOURNAL OF MEMBRANE SCIENCE, Vol: 423, Pages: 371-382, ISSN: 0376-7388
Beristain MF, Jimenez-Solomon MF, Ortega A, et al., 2012, Magnetic properties of polymerized diphenyloctatetrayne, MATERIALS CHEMISTRY AND PHYSICS, Vol: 136, Pages: 1116-1123, ISSN: 0254-0584
Jimenez Solomon MF, Bhole Y, Livingston AG, 2010, Organic solvent nanofiltration thin film composite (TFC) membranes, Pages: 118-121
Garcia-Zepeda EA, Licona-Limon I, Fernanda Jimenez-Solomon M, et al., 2007, Janus kinase 3-deficient T lymphocytes have an intrinsic defect in CCR7-mediated homing to peripheral lymphoid organs, IMMUNOLOGY, Vol: 122, Pages: 247-260, ISSN: 0019-2805
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