Highly selective multilayer polymer thin films for CO2/N2 separation Academic Article uri icon


  • © 2017 Wiley Periodicals, Inc. Multilayer thin films of poly(ethylene oxide) (PEO) and poly(methacrylic acid) (PMAA), deposited via layer-by-layer (LbL) assembly from aqueous solutions, are investigated for CO2/N2 separation. Eight and ten bilayer (217 and 389 nm thick, respectively) PEO/PMAA thin films deposited on a 25 μm polystyrene substrate exhibit CO2/N2 selectivities of 142 and 136, respectively. These are the highest reported to-date for this gas pair separation using a homogeneous polymer film. While further work remains to improve CO2 permeability, these results indicate the potential of LbL assemblies as standalone CO2 separation membranes for low-flux/high-purity applications, or as part of a composite and/or mixed-matrix membrane for high-flux applications. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017, 55, 1730–1737.

altmetric score

  • 0.5

author list (cited authors)

  • Song, Y., Lugo, E. L., Powell, S., Tzeng, P., Wilhite, B. A., & Grunlan, J. C.

citation count

  • 10

publication date

  • August 2017