Joel M. P. Scofield
University of Melbourne
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Publication
Featured researches published by Joel M. P. Scofield.
Energy and Environmental Science | 2016
Qiang Fu; Jinguk Kim; Paul A. Gurr; Joel M. P. Scofield; Sandra E. Kentish; Greg G. Qiao
Ultra-thin (∼100 nm) films with uniform thicknesses can facilitate high CO2 permeation and are of potential technological significance for CO2 capture. Among many approaches for obtaining such materials, the recently developed continuous assembly of polymers (CAP) technology provides a robust process, allowing for the production of defect-free, cross-linked and surface-confined thin films with nanometer scale precision. Through utilization of this nanotechnology, we have constructed composite membranes containing cross-linked ultra-thin surface films. The membrane materials formed exhibited significantly high permeances as well as excellent gas separation selectivity.
Journal of Materials Chemistry | 2013
Qiang Fu; Andri Halim; Jinguk Kim; Joel M. P. Scofield; Paul A. Gurr; Sandra E. Kentish; Greg G. Qiao
The release of large quantities of CO2 into the atmosphere has been linked to global warming and climate anomalies. Membrane processes offer a potentially viable energy-saving alternative for CO2 capture in comparison with conventional technologies such as amine absorption. However, gas separation membranes that are currently available have insufficiently high permeance (flux) for large scale applications such as the treatment of high volume flue gas with low concentration of CO2. Here we demonstrate a class of thin film composite (TFC) membranes, consisting of a high molecular weight amorphous poly(ethylene oxide)/poly(ether-block-amide) (HMA-PEO/Pebax® 2533) selective layer and a highly permeable polydimethylsiloxane (PDMS) intermediate layer which was pre-coated onto a polyacrylonitrile (PAN) microporous substrate. In contrast to the performance of conventional materials, the selective layer of TFC membranes shows super-permeable characteristics and outstanding CO2 separation performance. This unprecedented result arises from the introduction of HMA-PEOs into the Pebax® 2533 matrix, leading to high CO2 permeability and flux. These results provide an encouraging direction to further develop TFC membranes for efficient CO2 capture processes.
Journal of Materials Chemistry | 2014
Qiang Fu; Edgar H. H. Wong; Jinguk Kim; Joel M. P. Scofield; Paul A. Gurr; Sandra E. Kentish; Greg G. Qiao
Well-defined branched and densely cross-linked soft nanoparticles (SNPs) were synthesized and incorporated into a poly(ether-b-amide) (Pebax®) matrix to form the selective layer of thin film composite (TFC) membranes. The fabricated TFC membranes exhibited distinct gas separation abilities. These results reveal the effect of SNP morphologies on the membrane performance. This study may provide insights and novel strategies to fabricate highly permeable membrane materials for carbon dioxide (CO2) capture.
Journal of Materials Chemistry | 2015
Shereen Tan; Qiang Fu; Joel M. P. Scofield; Jinguk Kim; Paul A. Gurr; Katharina Ladewig; Anton Blencowe; Greg G. Qiao
Cyclodextrin-based supramolecular assemblies derived from poly(dimethylsiloxane) (PDMS) functionalized polyrotaxanes (PRXs) were self-assembled into core–shell morphologies and used as soft nanoparticle (SNP) additives in the selective layer of thin film composite (TFC) membranes for the first time. Various weight percentages (wt%) of the PRX SNP additives were combined with Pebax® 2533 to form the selective layer, and the gas transport properties of the TFC membranes were studied in detail. Increasing the amount of PRX SNP additives led to a significant increase in CO2 permeance of the membranes, with only a slight decrease in the CO2/N2 selectivity, which was attributed to the dynamic nature (i.e., translational and rotational freedom) of the conjugated PDMS chains on the PRXs. In comparison, the performance of membranes prepared using a conventional analogue with fixed PDMS chains was inferior. The excellent gas transport properties observed for membranes are attributed to the novel self-assembly process of the dynamic PRX SNP additives; the sliding nature of the conjugated PDMS chains allow for increased exposure of the CO2-philic PEG backbone and increased size of the hydrophobic core leading to improved membrane selectivity and permeability. The effect of varying operating conditions (feed pressure and temperature) was also investigated and compared between the dynamic and fixed additive systems. Interesting trends were observed with the dynamic PRX system which diverges from conventional systems. This study opens up new avenues for CD-based supramolecular chemistry in the field of membrane technologies for gas separation.
Journal of Membrane Science | 2016
Joel M. P. Scofield; Paul A. Gurr; Jinguk Kim; Qiang Fu; Sandra E. Kentish; Greg G. Qiao
Journal of Membrane Science | 2016
Jinguk Kim; Qiang Fu; Ke Xie; Joel M. P. Scofield; Sandra E. Kentish; Greg G. Qiao
Nanoscale | 2016
Jinguk Kim; Qiang Fu; Joel M. P. Scofield; Sandra E. Kentish; Greg G. Qiao
Journal of Polymer Science Part A | 2014
Paul A. Gurr; Joel M. P. Scofield; Jinguk Kim; Qiang Fu; Sandra E. Kentish; Greg G. Qiao
Journal of Polymer Science Part A | 2015
Joel M. P. Scofield; Paul A. Gurr; Jinguk Kim; Qiang Fu; Andri Halim; Sandra E. Kentish; Greg G. Qiao
Journal of Membrane Science | 2017
Ke Xie; Qiang Fu; Jinguk Kim; H.T. Lu; Yingdian He; Qinghu Zhao; Joel M. P. Scofield; Paul A. Webley; Greg G. Qiao