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Tailored CO2 -philic Gas Separation Membranes via One-Pot Thiol–ene Chemistry

Journal Article · · Macromolecules
 [1];  [2];  [3];  [2];  [2];  [2];  [4];  [2];  [5];  [2];  [6]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Georgia Inst. of Technology, Atlanta, GA (United States)
  5. National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
+ Show Author Affiliations
Recently, thiol–ene chemistry attracts much attention in the construction of functional polymer materials due to its versatility and fast reaction kinetics, though only a few studies have been reported on its utilization in the fabrication of elastic polymer materials. Herein, a series of elastic, poly(dimethylsiloxane)–poly(ethylene glycol) methyl ether acrylate (PDMS–PEGMEA)-based co-polymer membranes are synthesized via a one-pot thiol–ene reaction. These membranes are highly stable and exhibit tunable thermal/mechanical properties by tailoring the cross-linker and side-chain functionality. When used for gas separation application, all grafted elastomer membranes show excellent gas permeability and selectivity, and the membrane with an optimal composition (PDMS–PEGMEA30–EOPDMS10) has reached the Robeson upper bound (CO2 permeability ~800 barrer and α[CO2/N2] ~39). The high permeability originates from the extremely fast chain mobility of PDMS molecules at the ambient temperature. Tailoring the PEGMEA content allows control of the α[CO2/N2] ranging from 21 to 39 by enhancing gas solubility within the membrane matrix. This study provides a promising strategy to be utilized for the gutter layer, selective layer, or their combination in the industrial gas separation modules.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1564181
Alternate ID(s):
OSTI ID: 1557326
Journal Information:
Macromolecules, Journal Name: Macromolecules Journal Issue: 15 Vol. 52; ISSN 0024-9297
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

Figures / Tables (7)

Scheme 1(p. 13)figure Scheme 1
Figure 1(p. 14)figure Figure 1
Figure 2(p. 17)figure Figure 2
Figure 3(p. 18)figure Figure 3
Table 1(p. 21)table Table 1
Figure 4(p. 22)figure Figure 4
Table 2(p. 25)table Table 2

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Elastic Polymer Membrane
Gas Separation
Graft Copolymer
Poly(dimethylsiloxane)
Thiol-ene