Gas separation and water desalination performance of defect-free interfacially polymerized para-linked polyamide thin-film composite membranes

Zain Ali, Yingge Wang, Wojciech Ogieglo, Federico Pacheco Oreamuno, Hakkim Vovusha, Yu Han, Ingo Pinnau

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Introduction of interfacially polymerized (IP) polyamide thin-film composite (TFC) membranes in the 1980s revolutionized the reverse osmosis desalination industry. However, IP-derived TFCs have not achieved industrial success for gas separation applications due to the presence of membrane defects in their dry state. In this work, we report defect-free crosslinked polyamide thin-film composite membranes prepared from para-substituted aromatic and cycloaliphatic diamines, p-phenylenediamine (PPD) and piperazine (PIP), reacted with trimesoyl chloride (TMC). The key parameters in our modified IP process to mitigate defects are long reaction time (∼5 min) and high organic solution temperature (100 °C). The gas separation and desalination properties of the para-linked polyamide membranes were compared to previously reported polyamide TFCs made from meta-phenylenediamine (MPD) and TMC. The gas- and water permeances of the TFCs increased in the order: MPD-TMC 
Original languageEnglish (US)
Pages (from-to)118572
JournalJournal of Membrane Science
DOIs
StatePublished - Aug 10 2020

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