Thin-film composite crosslinked polythiosemicarbazide membranes for organic solvent nanofiltration (OSN)

Jamaliah Aburabie, Pradeep Neelakanda, Madhavan Karunakaran, Klaus-Viktor Peinemann

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

In this work we report a new class of solvent stable thin-film composite (TFC) membrane fabricated on crosslinked polythiosemicarbazide (PTSC) as substrate that exhibits superior stability compared with other solvent stable polymeric membranes reported up to now. Integrally skinned asymmetric PTSC membranes were prepared by the phase inversion process and crosslinked with an aromatic bifunctional crosslinker to improve the solvent stability. TFC membranes were obtained via interfacial polymerization using trimesoyl chloride (TMC) and diaminopiperazine (DAP) monomers. The membranes were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and contact angle measurement.The membranes exhibited high fluxes toward solvents like tetrahydrofuran (THF), dimethylformamide (DMF) and dimethylsulfoxide (DMSO) ranging around 20L/m2 h at 5bar with a molecular weight cut off (MWCO) of around 1000g/mol. The PTSC-based thin-film composite membranes are very stable toward polar aprotic solvents and they have potential applications in the petrochemical and pharmaceutical industry.
Original languageEnglish (US)
Pages (from-to)225-232
Number of pages8
JournalReactive and Functional Polymers
Volume86
DOIs
StatePublished - Jan 2015

ASJC Scopus subject areas

  • Materials Chemistry
  • Biochemistry
  • Polymers and Plastics
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Chemistry(all)

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