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Lau CH, Mulet X, Konstas K, et al. Hypercrosslinked Additives for Ageless Gas-Separation Membranes. Angew Chem Int Ed Engl. 2016;55(6):1998-2001doi: 10.1002/anie.201508070.
Lau, C. H., Mulet, X., Konstas, K., Doherty, C. M., Sani, M. A., Separovic, F., Hill, M. R., & Wood, C. D. (2016). Hypercrosslinked Additives for Ageless Gas-Separation Membranes. Angewandte Chemie (International ed. in English), 55(6), 1998-2001. https://doi.org/10.1002/anie.201508070
Lau, Cher Hon, et al. "Hypercrosslinked Additives for Ageless Gas-Separation Membranes." Angewandte Chemie (International ed. in English) vol. 55,6 (2016): 1998-2001. doi: https://doi.org/10.1002/anie.201508070
Lau CH, Mulet X, Konstas K, Doherty CM, Sani MA, Separovic F, Hill MR, Wood CD. Hypercrosslinked Additives for Ageless Gas-Separation Membranes. Angew Chem Int Ed Engl. 2016 Feb 05;55(6):1998-2001. doi: 10.1002/anie.201508070. Epub 2016 Jan 08. PMID: 26749173.
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Angew Chem Int Ed Engl. 2016 Feb 05;55(6):1998-2001. doi: 10.1002/anie.201508070. Epub 2016 Jan 08.

Hypercrosslinked Additives for Ageless Gas-Separation Membranes.

Angewandte Chemie (International ed. in English)

Cher Hon Lau, Xavier Mulet, Kristina Konstas, Cara M Doherty, Marc-Antoine Sani, Frances Separovic, Matthew R Hill, Colin D Wood

Affiliations

  1. CSIRO, Bag 10, Clayton South, 3169, VIC, Australia. [email protected].
  2. CSIRO, Bag 10, Clayton South, 3169, VIC, Australia.
  3. School of Chemistry, Bio21 Institute, The University of Melbourne, VIC, 3010, Australia.
  4. CSIRO, Bag 10, Clayton South, 3169, VIC, Australia. [email protected].
  5. CSIRO, Bag 10, Clayton South, 3169, VIC, Australia. [email protected].

PMID: 26749173 DOI: 10.1002/anie.201508070

Abstract

The loss of internal pores, a process known as physical aging, inhibits the long-term use of the most promising gas-separation polymers. Previously we reported that a porous aromatic framework (PAF-1) could form a remarkable nanocomposite with gas-separation polymers to stop aging. However, PAF-1 synthesis is very onerous both from a reagent and reaction-condition perspective, making it difficult to scale-up. We now reveal a highly dispersible and scalable additive based on α,α'-dichloro-p-xylene (p-DCX), that inhibits aging more effectively, and crucially almost doubles gas-transport selectivity. These synergistic effects are related to the intimately mixed nanocomposite that is formed though the high dispersibility of p-DCX in the gas-separation polymer. This reduces particle-size effects and the internal free volume is almost unchanged over time. This study shows this inexpensive and scalable polymer additive delivers exceptional gas-transport performance and selectivity.

© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords: Davankov polymers; gas separation; hypercrosslinked polymers; membranes; physical aging

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