< Back to previous page

Publication

Blending PPO-based molecules with Pebax MH 1657 in membranes for gas separation

Journal Contribution - Journal Article

© 2018 Wiley Periodicals, Inc. This work explores the possibilities to blend block copolymers, i.e., Pebax MH 1657, with a variety of cheap poly(propylene oxide)-rich molecules which could potentially play a double role in the resulting membranes as dispersing/stabilizing agents in multi-component casting solutions and as a gas transport medium in the final membrane. These membranes were prepared by solution casting and were characterized by differential scanning calorimetry, scanning electron microscopy, atomic force microscopy, X-ray diffraction, density measurements, and Fourier transform infrared-attenuated total reflection, while additive incorporation was also studied with theoretical calculations. Gas permeation measurements showed that this approach resulted in increased permeabilities at the expense of mixed-gas selectivity. An interpretation of the blend structure was finally made using gas transport models. The compatibility of these additives with the synthesis of selective gas separation membranes may enable a potential double role in membrane synthesis, i.e., as stabilizing agents in membrane synthesis and as a gas transport medium in the final membrane. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46433.
Journal: Journal of Applied Polymer Science
ISSN: 0021-8995
Issue: 27
Volume: 135
Publication year:2018
BOF-keylabel:yes
IOF-keylabel:yes
BOF-publication weight:1
CSS-citation score:2
Authors from:Higher Education
Accessibility:Open