Journal article

High-performance thin film composite membranes with well-defined poly(dimethylsiloxane)-b-poly(ethylene glycol) copolymer additives for CO2 separation

JMP Scofield, PA Gurr, J Kim, Q Fu, A Halim, SE Kentish, GG Qiao

Journal of Polymer Science Part A: Polymer Chemistry | Wiley: 12 months | Published : 2015


A series of well-defined diblock copolymers (BCPs) consisting of poly(ethylene glycol) (PEG) and poly(dimethylsiloxane) (PDMS) were synthesized and blended with commercially available PEBAX® 2533 to form the active layer of thin-film composite (TFC) membranes, via spin-coating. BCPs with a PEG component ranging from 1 to 10 kDa and a PDMS component ranging from 1 to 10 kDa were synthesized by a facile condensation reaction of hydroxyl terminated PEG and carboxylic acid functionalized PDMS. The BCP/PEBAX® 2533 blends up to 50 wt % on cross-linked PDMS gutter layers were tested at 35 C and 350 kPa. TFC membranes containing BCPs of 1 kDa PEG and 1-5 kDa PDMS produced optimal results with CO2 pe..

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Awarded by Australian Research Council

Funding Acknowledgements

The authors acknowledge the funding provided by the Australian Government through the CRC Program to support this research. We acknowledge the Australian Research Council under the Future Fellowship (FT110100411, G.G.Q.) and the Super Science Fellowship (FS110200025, G.G.Q., S.E.K., and Q.F.). Q. Fu acknowledges support from the University of Melbourne's 2013 Early Career Researcher Grant.