Thermally rearranged (TR) bismaleimide-based network polymers for gas separation membranes

2016 ◽  
Vol 52 (93) ◽  
pp. 13556-13559 ◽  
Author(s):  
Yu Seong Do ◽  
Won Hee Lee ◽  
Jong Geun Seong ◽  
Ju Sung Kim ◽  
Ho Hyun Wang ◽  
...  
Keyword(s):  
Transport Properties ◽  
Gas Separation ◽  
Gas Transport ◽  
Polymer Membranes ◽  
Interpenetrating Networks ◽  
Network Polymers ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Gas Transport Properties ◽  
First Time

Highly permeable thermally rearranged polymer membranes based on bismaleimide derivatives are reported for the first time. The membranes form semi-interpenetrating networks with other polymers endowing them with superior gas transport properties.

Cyclodextrin-based supramolecular polymeric nanoparticles for next generation gas separation membranes

2015 ◽  
Vol 3 (28) ◽  
pp. 14876-14886 ◽  
Author(s):  
Shereen Tan ◽  
Qiang Fu ◽  
Joel. M. P. Scofield ◽  
Jinguk Kim ◽  
Paul A. Gurr ◽  
...  
Keyword(s):  
Gas Separation ◽  
Gas Transport ◽  
Polymeric Nanoparticles ◽  
Composite Membranes ◽  
Dynamic Nature ◽  
Selective Layer ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
First Time ◽  
Nanoparticle Additives

Cyclodextrin-based supramolecular polyrotaxanes are for the first time used as soft nanoparticle additives for the selective layer of composite membranes. They exhibit outstanding gas transport characteristics at low additive percentages, due to the dynamic nature of the PDMS side chains.

scholarly journals A Molecular Simulation Study of Silica/Polysulfone Mixed Matrix Membrane for Mixed Gas Separation

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2199
Author(s):  
Khadija Asif ◽  
Serene Sow Mun Lock ◽  
Syed Ali Ammar Taqvi ◽  
Norwahyu Jusoh ◽  
Chung Loong Yiin ◽  
...  
Keyword(s):  
Transport Properties ◽  
Molecular Simulation ◽  
Gas Separation ◽  
Membrane Separation ◽  
Gas Transport ◽  
Mixed Matrix ◽  
Mixed Gas ◽  
Gas Transport Properties ◽  
Simulation Results ◽  
Mixed Gases

Polysulfone-based mixed matrix membranes (MMMs) incorporated with silica nanoparticles are a new generation material under ongoing research and development for gas separation. However, the attributes of a better-performing MMM cannot be precisely studied under experimental conditions. Thus, it requires an atomistic scale study to elucidate the separation performance of silica/polysulfone MMMs. As most of the research work and empirical models for gas transport properties have been limited to pure gas, a computational framework for molecular simulation is required to study the mixed gas transport properties in silica/polysulfone MMMs to reflect real membrane separation. In this work, Monte Carlo (MC) and molecular dynamics (MD) simulations were employed to study the solubility and diffusivity of CO2/CH4 with varying gas concentrations (i.e., 30% CO2/CH4, 50% CO2/CH4, and 70% CO2/CH4) and silica content (i.e., 15–30 wt.%). The accuracy of the simulated structures was validated with published literature, followed by the study of the gas transport properties at 308.15 K and 1 atm. Simulation results concluded an increase in the free volume with an increasing weight percentage of silica. It was also found that pure gas consistently exhibited higher gas transport properties when compared to mixed gas conditions. The results also showed a competitive gas transport performance for mixed gases, which is more apparent when CO2 increases. In this context, an increment in the permeation was observed for mixed gas with increasing gas concentrations (i.e., 70% CO2/CH4 > 50% CO2/CH4 > 30% CO2/CH4). The diffusivity, solubility, and permeability of the mixed gases were consistently increasing until 25 wt.%, followed by a decrease for 30 wt.% of silica. An empirical model based on a parallel resistance approach was developed by incorporating mathematical formulations for solubility and permeability. The model results were compared with simulation results to quantify the effect of mixed gas transport, which showed an 18% and 15% percentage error for the permeability and solubility, respectively, in comparison to the simulation data. This study provides a basis for future understanding of MMMs using molecular simulations and modeling techniques for mixed gas conditions that demonstrate real membrane separation.

Effect of mild solvent post-treatments on the gas transport properties of glassy polymer membranes

1994 ◽  
Vol 90 (3) ◽  
pp. 213-229 ◽  
Author(s):  
Mary E. Rezac ◽  
Johann D. Le Roux ◽  
Hongming Chen ◽  
Donald R. Paul ◽  
William J. Koros
Keyword(s):  
Transport Properties ◽  
Gas Transport ◽  
Glassy Polymer ◽  
Polymer Membranes ◽  
Gas Transport Properties

Synthesis and Formation of Gas Separation Membranes Based on Polyalkylenesiloxanes

2019 ◽  
Vol 816 ◽  
pp. 233-237
Author(s):  
Ilya L. Borisov ◽  
N.V. Ushakov ◽  
E.A. Grushevenko ◽  
E.S. Finkel’stein ◽  
V.V. Volkov
Keyword(s):  
Gas Separation ◽  
Separation Process ◽  
Membrane Gas Separation ◽  
Gas Separation Membrane ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Gas Transport Properties ◽  
Separation Membrane ◽  
Transport Component ◽  
The Ideal

The membrane gas separation is currently a competitive separation process. The heart of the membrane gas separation process is the membrane, more precisely the material from which it is made. The search for a selective material to develop a gas separation membrane is an important task presently. Membrane materials with advantageous impact of sorption transport component is a good material for the selective fractionating С1-С4 hydrocarbons with obtaining methane fraction and C3+ fraction. Such materials are polyalkylenesiloxanes. In this work, the optimal concentration of a curing agent (tetraethoxysilane) was defined (5%). Such concentration is necessary for obtaining constant membrane film with high gas transport properties: the permeability coefficient for n-butane is 7400; the ideal selectivity of n-butane/methane is 25.5.

Synthesis, characterization and gas transport properties of novel poly(amine-imide)s containing tetraphenylmethane pendant groups

2014 ◽  
Vol 2 (25) ◽  
pp. 9835-9843 ◽  
Author(s):  
Hongchao Mao ◽  
Suobo Zhang
Keyword(s):  
Transport Properties ◽  
Gas Separation ◽  
Gas Transport ◽  
Pendant Group ◽  
Gas Transport Properties

Rigid and bulky tetraphenylmethane pendant group containing poly(amine-imide)s were designed and prepared for gas separation applications.

scholarly journals Pebax-based composite membranes with high gas transport properties enhanced by ionic liquids for CO2 separation

RSC Advances ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. 6422-6431 ◽  
Author(s):  
Mengdie Li ◽  
Xiangping Zhang ◽  
Shaojuan Zeng ◽  
Lu bai ◽  
Hongshuai Gao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Transport Properties ◽  
Gas Separation ◽  
Gas Transport ◽  
Composite Membranes ◽  
Co2 Separation ◽  
Separation Performance ◽  
Gas Transport Properties ◽  
Gas Separation Performance

A series of composite membranes with high gas transport properties enhanced by IL and ZIF-8 have been developed. The influence of ionic liquid and ZIF-8 addition on gas separation performance were systematically investigated.

Photo-oxidative PIM-1 based mixed matrix membranes with superior gas separation performance

2015 ◽  
Vol 3 (33) ◽  
pp. 17273-17281 ◽  
Author(s):  
Lin Hao ◽  
Kuo-Sung Liao ◽  
Tai-Shung Chung
Keyword(s):  
Transport Properties ◽  
Gas Separation ◽  
Gas Transport ◽  
Mixed Matrix Membranes ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Gas Transport Properties ◽  
Gas Separation Performance ◽  
Matrix Membranes

Photo-oxidative PIM-1 incorporated with ZIF-71 form well-dispersed mixed-matrix membranes with enhanced gas transport properties. These membranes have impressive separation performance for CO2/CH4 and O2/N2.

Synthesis and characterization of triptycene-based polyimides with tunable high fractional free volume for gas separation membranes

2014 ◽  
Vol 2 (33) ◽  
pp. 13309-13320 ◽  
Author(s):  
Jennifer R. Wiegand ◽  
Zachary P. Smith ◽  
Qiang Liu ◽  
Christopher T. Patterson ◽  
Benny D. Freeman ◽  
...  
Keyword(s):  
Free Volume ◽  
Gas Separation ◽  
Gas Transport ◽  
Synthesis And Characterization ◽  
Fractional Free Volume ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Selective Separations ◽  
Polyimide Membranes

Triptycene-containing polyimide membranes with tunable fractional free volume promoting fast gas transport and selective separations.

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