Recently, high-free volume, glassy ladder-type polymers, referred to as polymers of intrinsic microporosity (PIM), have been developed and their reported gas transport performance exceeded the Robeson upper bound trade-off for O2/N2 and CO2/CH4. The present work reports the gas transport behavior of PIM-1/silica nanocomposite membranes. The changes in free volume, as well as the presence and volume of the void cavities, were investigated by analyzing the density, thermal stability, and nano-structural morphology. The enhancement in gas permeability (e.g., He, H2, O2, N2, and CO2) with increasing filler content shows that the trend is related to the true silica volume and void volume fraction. Crown Copyright © 2009.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors gratefully acknowledge a Manpower Development Program for Energy & Resources Grant supported by the Ministry of Knowledge and Economy (MKE) (2008EAPHMP1700002008). This work was partially supported by the Climate Change Technology and Innovation Initiative, Greenhouse Gas project (CCTII, GHG), Natural Resources Canada (NRCan). We thank David Kingston of the National Research Council for performing SEM measurements.
ASJC Scopus subject areas
- Filtration and Separation
- General Materials Science
- Physical and Theoretical Chemistry