Molecular Mobility and Gas Transport Properties of Nanocomposites based on PIM-1 and Polyhedral Oligomeric Phenethyl-Silsesquioxanes (POSS)

Research output: Contribution to journalArticle

  • External authors:
  • Nora Konnertz
  • Yi Ding
  • Wayne Harrison
  • Andreas Schönhals
  • Martin Böhning

Abstract

Polymers with intrinsic microporosity (PIMs) are of great interest in the field of gas separation membranes. Already the first synthesized PIM-1 shows extraordinary permeability and selectivity. Unfortunately, PIM-1 is susceptible to physical aging and thus gradually loses its outstanding properties. In this study a polyhedral oligomeric silsesquioxane with phenethyl substituents (PhenethylPOSS) was used as a nanofiller (0–40 wt%) in the PIM-1 matrix to potentially improve the gas transport properties and prevent physical aging. The molecular mobility of the solution-cast nanocomposite films was analyzed by Broadband Dielectric Spectroscopy (BDS). Furthermore, gas permeability was determined with the time lag method (0–20 bar upstream pressure) at 35 °C for N2, O2, CH4 and CO2.

Bibliographical metadata

Original languageEnglish
Pages (from-to)274–285
Number of pages12
JournalJournal of Membrane Science
Volume529
Early online date8 Feb 2017
DOIs
StatePublished - 1 May 2017