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Title: Membranes with artificial free-volume for biofuel production

Journal Article · · Nature Communications
DOI: https://doi.org/10.1038/ncomms8529 · OSTI ID:1256031
 [1];  [2];  [2];  [3];  [3];  [2];  [4]
  1. Univ. of California, Berkeley, CA (United States)
  2. CSIRO Manufacturing Private Bag 10, Victoria (Australia)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Free-volume of polymers governs transport of penetrants through polymeric films. Control over free-volume is thus important for the development of better membranes for a wide variety of applications such as gas separations, pharmaceutical purifications and energy storage. To date, methodologies used to create materials with different amounts of free-volume are based primarily on chemical synthesis of new polymers. Here we report a simple methodology for generating free-volume based on the self-assembly of polyethylene-b-polydimethylsiloxane-b-polyethylene triblock copolymers. Here, we have used this method to fabricate a series of membranes with identical compositions but with different amounts of free-volume. We use the term artificial free-volume to refer to the additional free-volume created by self-assembly. The effect of artificial free-volume on selective transport through the membranes was tested using butanol/water and ethanol/water mixtures due to their importance in biofuel production. Moreover, we found that the introduction of artificial free-volume improves both alcohol permeability and selectivity.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1256031
Journal Information:
Nature Communications, Journal Name: Nature Communications Vol. 6; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (43)

Positron Annihilation Lifetime Spectroscopy and Other Methods for Free Volume Evaluation in Polymers† book June 2006
Modeling of transport of small molecules in polymer blends: Application of effective medium theory journal February 1983
Correlation of separation factor versus permeability for polymeric membranes journal October 1991
Phase Diagrams and Conductivity Behavior of Poly(ethylene oxide)-Molten Salt Rubbery Electrolytes journal December 1994
Single-File Diffusion of Protein Drugs through Cylindrical Nanochannels journal May 2010
Size-Selective Diffusion in Nanoporous but Flexible Membranes for Glucose Sensors journal March 2009
Asymmetric superstructure formed in a block copolymer via phase separation journal November 2007
Polymers with Cavities Tuned for Fast Selective Transport of Small Molecules and Ions journal October 2007
Effect of physical aging of poly(1-trimethylsilyl-1-propyne) films synthesized with TaCl5 and NbCl5 on gas permeability, fractional free volume, and positron annihilation lifetime spectroscopy parameters journal May 2000
Positron Annihilation Lifetime Spectroscopy and Other Methods for Free Volume Evaluation in Polymers† book June 2006
Ending Aging in Super Glassy Polymer Membranes journal April 2014
Separation technologies for the recovery and dehydration of alcohols from fermentation broths journal November 2008
A review of pervaporation for product recovery from biomass fermentation processes journal January 2005
Modeling of transport of small molecules in polymer blends: Application of effective medium theory journal February 1983
Microcomputer program for analysis of positron annihilation lifetime spectra journal May 1996
The temperature dependence of positron lifetimes in solid pivalic acid journal December 1981
Correlation of separation factor versus permeability for polymeric membranes journal October 1991
Poly[1-(trimethylsilyl)-1-propyne] and related polymers: synthesis, properties and functions journal June 2001
Some remarks on the relation between free-volume fractions and ortho-positronium lifetimes in amorphous polymers journal June 2000
The upper bound revisited journal July 2008
Characterization of sodium chloride and water transport in crosslinked poly(ethylene oxide) hydrogels journal August 2010
A variable energy positron annihilation lifetime spectroscopy study of physical aging in thin glassy polymer films journal November 2009
The effect of crosslinking temperature on the permeability of PDMS membranes: Evidence of extraordinary CO2 and CH4 gas permeation journal February 2014
Sorption, Transport, and Structural Evidence for Enhanced Free Volume in Poly(4-methyl-2-pentyne)/Fumed Silica Nanocomposite Membranes journal January 2003
Phase Diagrams and Conductivity Behavior of Poly(ethylene oxide)-Molten Salt Rubbery Electrolytes journal December 1994
Mechanism of Ion Transport in Amorphous Poly(ethylene oxide)/LiTFSI from Molecular Dynamics Simulations journal February 2006
Effect of Free Volume on Water and Salt Transport Properties in Directly Copolymerized Disulfonated Poly(arylene ether sulfone) Random Copolymers journal June 2011
Mesoporous Block Copolymer Morphology Studied by Contrast-Matched Resonant Soft X-ray Scattering journal November 2012
Effect of Nonsolvent Exposure on Morphology of Mesoporous Semicrystalline Block Copolymer Films journal May 2013
Relationship between Segregation Strength and Permeability of Ethanol/Water Mixtures through Block Copolymer Membranes journal December 2013
Synthesis of Well-Defined Polyethylene–Polydimethylsiloxane–Polyethylene Triblock Copolymers by Diimide-Based Hydrogenation of Polybutadiene Blocks journal June 2014
Molecular Dynamics Simulations of Poly(ethylene oxide)/LiI Melts. 1. Structural and Conformational Properties journal November 1998
Nanoporous Membranes Derived from Block Copolymers: From Drug Delivery to Water Filtration journal June 2010
Size-Selective Diffusion in Nanoporous but Flexible Membranes for Glucose Sensors journal March 2009
Runaway risk of forming toxic compounds journal August 2003
Asymmetric superstructure formed in a block copolymer via phase separation journal November 2007
Free volume and intrinsic microporosity in polymers journal January 2005
Positronium Annihilation in Molecular Substances journal June 1972
Ultrapermeable, Reverse-Selective Nanocomposite Membranes journal April 2002
Antibody-Based Bio-Nanotube Membranes for Enantiomeric Drug Separations journal June 2002
Polymers with Cavities Tuned for Fast Selective Transport of Small Molecules and Ions journal October 2007
An Efficient Polymer Molecular Sieve for Membrane Gas Separations journal January 2013
Pervaporation of alcohols through highly permeable PIM-1 polymer films journal April 2008

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