Hydrocarbon ladder polymers with ultrahigh permselectivity for membrane gas separations

Holden W. H. Lai, Francesco M. Benedetti, Jun Myun Ahn, Ashley M. Robinson, Yingge Wang, Ingo Pinnau, Zachary P. Smith, Yan Xia

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Membranes have the potential to substantially reduce energy consumption of industrial chemical separations, but their implementation has been limited owing to a performance upper bound—the trade-off between permeability and selectivity. Although recent developments of highly permeable polymer membranes have advanced the upper bounds for various gas pairs, these polymers typically exhibit limited selectivity. We report a class of hydrocarbon ladder polymers that can achieve both high selectivity and high permeability in membrane separations for many industrially relevant gas mixtures. Additionally, their corresponding films exhibit desirable mechanical and thermal properties. Tuning of the ladder polymer backbone configuration was found to have a profound effect on separation performance and aging behavior.
Original languageEnglish (US)
Pages (from-to)1390-1392
Number of pages3
Issue number6587
StatePublished - Mar 25 2022

ASJC Scopus subject areas

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