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Title: Layer-by-layer assembled polymer/MOF membrane for H 2/CO 2 separation

Numerous investigators have produced polymer composites containing metal-organic framework (MOF) filler particles in attempts to combine the processability of polymers and the gas selectivity of MOF particles. However, filler particle aggregation and weak filler-matrix interaction have sometimes led to poor gas separation performance. In this study, we combined polyvinylpyrrolidone modified UiO-66-PA particles (PVP + MOF) with poly(acrylic acid) (PAA) through H-bonding assisted layer-by-layer assembly. The resultant PAA/(PVP + MOF) bilayers feature individually dispersed fillers and strong filler-matrix interaction. Of note, this filler-matrix interaction is stronger than the internal strength of fillers, which is a phenomenon previously not seen in polymer/MOF composites. In conclusion, the combination of individually dispersed fillers and strong filler-matrix interaction enables the polymer/MOF composite membrane, based on PAA/(PVP + MOF) bilayers, to be more selective (H 2/CO 2 = 20.3) than PAA/PVP bilayers (H 2/CO 2 = 12.5) and several pure-MOF membranes that were reported previously (H 2/CO 2 < 10).
Authors:
 [1] ;  [1] ;  [1]
  1. National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
Publication Date:
Type:
Accepted Manuscript
Journal Name:
Journal of Membrane Science
Additional Journal Information:
Journal Volume: 556; Journal Issue: C; Journal ID: ISSN 0376-7388
Publisher:
Elsevier
Research Org:
National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Polymer composites; MOF; Filler-matrix interaction; Filler dispersion; Layer-by-layer assembly
OSTI Identifier:
1481271
Alternate Identifier(s):
OSTI ID: 1496310

Xiang, Fangming, Marti, Anne M., and Hopkinson, David P.. Layer-by-layer assembled polymer/MOF membrane for H2/CO2 separation. United States: N. p., Web. doi:10.1016/j.memsci.2018.03.081.
Xiang, Fangming, Marti, Anne M., & Hopkinson, David P.. Layer-by-layer assembled polymer/MOF membrane for H2/CO2 separation. United States. doi:10.1016/j.memsci.2018.03.081.
Xiang, Fangming, Marti, Anne M., and Hopkinson, David P.. 2018. "Layer-by-layer assembled polymer/MOF membrane for H2/CO2 separation". United States. doi:10.1016/j.memsci.2018.03.081. https://www.osti.gov/servlets/purl/1481271.
@article{osti_1481271,
title = {Layer-by-layer assembled polymer/MOF membrane for H2/CO2 separation},
author = {Xiang, Fangming and Marti, Anne M. and Hopkinson, David P.},
abstractNote = {Numerous investigators have produced polymer composites containing metal-organic framework (MOF) filler particles in attempts to combine the processability of polymers and the gas selectivity of MOF particles. However, filler particle aggregation and weak filler-matrix interaction have sometimes led to poor gas separation performance. In this study, we combined polyvinylpyrrolidone modified UiO-66-PA particles (PVP + MOF) with poly(acrylic acid) (PAA) through H-bonding assisted layer-by-layer assembly. The resultant PAA/(PVP + MOF) bilayers feature individually dispersed fillers and strong filler-matrix interaction. Of note, this filler-matrix interaction is stronger than the internal strength of fillers, which is a phenomenon previously not seen in polymer/MOF composites. In conclusion, the combination of individually dispersed fillers and strong filler-matrix interaction enables the polymer/MOF composite membrane, based on PAA/(PVP + MOF) bilayers, to be more selective (H2/CO2 = 20.3) than PAA/PVP bilayers (H2/CO2 = 12.5) and several pure-MOF membranes that were reported previously (H2/CO2 < 10).},
doi = {10.1016/j.memsci.2018.03.081},
journal = {Journal of Membrane Science},
number = C,
volume = 556,
place = {United States},
year = {2018},
month = {4}
}