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Title: Elastic free-standing RTIL composite membranes for CO 2 /N 2 separation based on sphere-forming triblock/diblock copolymer blends

Authors:
; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1324844
Grant/Contract Number:
AR0000098
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Journal of Membrane Science
Additional Journal Information:
Journal Volume: 511; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-10-06 09:36:32; Journal ID: ISSN 0376-7388
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English

Citation Formats

Wijayasekara, Dilanji B., Cowan, Matthew G., Lewis, Jackson T., Gin, Douglas L., Noble, Richard D., and Bailey, Travis S. Elastic free-standing RTIL composite membranes for CO 2 /N 2 separation based on sphere-forming triblock/diblock copolymer blends. Netherlands: N. p., 2016. Web. doi:10.1016/j.memsci.2016.03.045.
Wijayasekara, Dilanji B., Cowan, Matthew G., Lewis, Jackson T., Gin, Douglas L., Noble, Richard D., & Bailey, Travis S. Elastic free-standing RTIL composite membranes for CO 2 /N 2 separation based on sphere-forming triblock/diblock copolymer blends. Netherlands. doi:10.1016/j.memsci.2016.03.045.
Wijayasekara, Dilanji B., Cowan, Matthew G., Lewis, Jackson T., Gin, Douglas L., Noble, Richard D., and Bailey, Travis S. Mon . "Elastic free-standing RTIL composite membranes for CO 2 /N 2 separation based on sphere-forming triblock/diblock copolymer blends". Netherlands. doi:10.1016/j.memsci.2016.03.045.
@article{osti_1324844,
title = {Elastic free-standing RTIL composite membranes for CO 2 /N 2 separation based on sphere-forming triblock/diblock copolymer blends},
author = {Wijayasekara, Dilanji B. and Cowan, Matthew G. and Lewis, Jackson T. and Gin, Douglas L. and Noble, Richard D. and Bailey, Travis S.},
abstractNote = {},
doi = {10.1016/j.memsci.2016.03.045},
journal = {Journal of Membrane Science},
number = C,
volume = 511,
place = {Netherlands},
year = {Mon Aug 01 00:00:00 EDT 2016},
month = {Mon Aug 01 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.memsci.2016.03.045

Citation Metrics:
Cited by: 6works
Citation information provided by
Web of Science

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  • Cited by 25
  • An aspartame-based, low molecular-weight organic gelator (LMOG) was used to form melt-infused and composite membranes with two different imidazolium-based room-temperature ionic liquids (RTILs) for CO2 separation from N-2. Previous work demonstrated that LMOGs can gel RTILs at low, loading levels, and this aspartame-based LMOG was selected because it has been reported to gel a large number of RTILs. The imidazolium-based RTILs were used because of their inherent good properties for CO2/light gas separations. Analysis of the resulting bulk RTIL/LMOG physical gels showed that these materials have high sol-gel transition temperatures (ca. 135 degrees C) suitable for flue gas applications. Gasmore » permeabilities and burst pressure measurements of thick, melt infused membranes revealed a trade-off between high CO2 permeabilities and good mechanical stability as a function of the LMOG loading. Defect-free, composite membranes of the gelled RTILs were successfully fabricated by choosing an appropriate porous membrane support (hydrophobic PTFE) using a suitable coating technique (roller coating). The thicknesses of the applied composite gel layers ranged from 10.3 to 20.7 mu m, which represents an order of magnitude decrease in active layer thickness, compared to the original melt-infused gel RTIL membranes.« less
  • In this work, we describe a facile approach to improve the robustness of conductive mesoporous carbon-based thin films by the addition of silica to the matrix through the triconstituent organic-inorganic-organic co-assembly of resol (carbon precursor) and tetraethylorthosilicate (silica precursor) with triblock-copolymer Pluronic F127. The pyrolysis of the resol-silica-pluronic F127 film yields a porous composite thin film with well-defined mesostructure. X-Ray diffraction (XRD), grazing incidence small angle X-ray scattering (GISAXS), and electron microscopy measurements indicate that the obtained carbon-based thin films have a highly ordered orthorhombic mesostructure (Fmmm) with uniform large pore size (~3 nm). The orthorhombic mesostructure is oriented andmore » the (010) plane is parallel to the silicon wafer substrate. The addition of silica to the matrix impacts the pore size, surface area, porosity, modulus and conductivity. For composite films with approximately 40 wt% silica, the conductivity is decreased by approximately an order of magnitude in comparison to a pure carbon mesoporous film, but the conductivity is comparable to typical printed carbon inks used in electrochemical sensing, {approx}10 S cm -1. The mechanical properties of these mesoporous silica-carbon hybrid films are similar to the pure carbon analogs with a Young's modulus between 10 GPa and 15 GPa, but the material is significantly more porous. Moreover, the addition of silica to the matrix appears to improve the adhesion of the mesoporous film to a silicon wafer. These mesoporous silica-carbon composite films have appropriate characteristics for use in sensing applications.« less