Characterization of low permeability gas separation membranes and barrier materials; design and operation considerations

2004 ◽  
Vol 245 (1-2) ◽  
pp. 227-231 ◽  
Author(s):  
Theodore T. Moore ◽  
Shilpa Damle ◽  
P. Jason Williams ◽  
William J. Koros
Keyword(s):  
Gas Separation ◽  
Materials Design ◽  
Low Permeability ◽  
Barrier Materials ◽  
Separation Membranes ◽  
Gas Separation Membranes

scholarly journals Synthesis and characterization of polybenzimidazoles derived from tetraaminodiphenylsulfone for high temperature gas separation membranes

Polymer ◽  
2015 ◽  
Vol 71 ◽  
pp. 135-142 ◽  
Author(s):  
Hailun Borjigin ◽  
Kevin A. Stevens ◽  
Ran Liu ◽  
Joshua D. Moon ◽  
Andrew T. Shaver ◽  
...  
Keyword(s):  
High Temperature ◽  
Gas Separation ◽  
Synthesis And Characterization ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
High Temperature Gas

Characterization of substructure resistance in asymmetric gas separation membranes

1999 ◽  
Vol 160 (1) ◽  
pp. 51-64 ◽  
Author(s):  
Dominic T. Clausi ◽  
Scott A. McKelvey ◽  
William J. Koros
Keyword(s):  
Gas Separation ◽  
Separation Membranes ◽  
Gas Separation Membranes

scholarly journals Synthesis and Characterization of Novel Nanoporous Gl-POSS-Branched Polymeric Gas Separation Membranes

Membranes ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 110 ◽  
Author(s):  
Ilnaz I. Zaripov ◽  
Ilsiya M. Davletbaeva ◽  
Zulfiya Z. Faizulina ◽  
Ruslan S. Davletbaev ◽  
Aidar T. Gubaidullin ◽  
...  
Keyword(s):  
Gas Separation ◽  
Gas Permeability ◽  
Chemical Properties ◽  
Toluene Diisocyanate ◽  
Main Reaction ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Oligomeric Silsesquioxane ◽  
Physical And Chemical

Novel nanoporous Gl-POSS-branched polymers based on the macroinitiator of anionic nature, 2,4-toluene diisocyanate, and octaglycidyl polyhedral oligomeric silsesquioxane (Gl-POSS) were obtained as gas separation membranes. The synthesis of polymers was carried out using various loads of Gl-POSS. It was found that the main reaction proceeding with 2,4-toluene diisocyanate is the polyaddition, accompanied by the isocyanate groups opening of the carbonyl part. This unusual opening of isocyanate groups leads to the formation of coplanar acetal nature polyisocyanates (O-polyisocyanate). The terminal O-polyisocyanate links initiate the subsequent opening of the epoxide rings in Gl-POSS. As a result, Gl-POSS serves as a hard and bulky branching agent and creates the specific framing supramolecular structure, which leads to the formation of nanopores in the polymer, where the flexible polyether components are located inside the cavities. Thermal, mechanical, physical, and chemical properties of the obtained polymers were studied at various Gl-POSS contents in the polymer matrix. It was found that these polymers show high selectivity of gas transport properties for pure ammonia relative to nitrogen and hydrogen at ambient temperature. Measurements showed that the gas permeability coefficients and the values of ideal selectivity were in a non-additive dependence to the Gl-POSS content.

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.

Synthesis and characterization of poly(diphenylacetylenes) containing both hydroxy and halogen/alkyl groups as gas separation membranes

2006 ◽  
Vol 285 (1-2) ◽  
pp. 412-419 ◽  
Author(s):  
Yanming Hu ◽  
Toshikazu Sakaguchi ◽  
Masashi Shiotsuki ◽  
Fumio Sanda ◽  
Toshio Masuda
Keyword(s):  
Gas Separation ◽  
Synthesis And Characterization ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Alkyl Groups

scholarly journals Synthesis and Characterization of Ionene-Polyamide Materials as Candidates for New Gas Separation Membranes

MRS Advances ◽  
2018 ◽  
Vol 3 (52) ◽  
pp. 3091-3102 ◽  
Author(s):  
Jason E. Bara ◽  
Kathryn E. O’Harra ◽  
Marlow M. Durbin ◽  
Grayson P. Dennis ◽  
Enrique M. Jackson ◽  
...  
Keyword(s):  
Gas Separation ◽  
Polymer Membranes ◽  
Synthesis And Characterization ◽  
Melting Points ◽  
Polymer Backbone ◽  
Separation Membranes ◽  
New Family ◽  
Gas Separation Membranes ◽  
Aromatic Amide

AbstractA new family of six ionenes containing aromatic amide linkages has been synthesized from ready available starting materials at scales up to ∼50 g. These ionene-polyamides are all constitutional isomers and vary only in the regiochemistry of the amide linkages (para, meta) and xylyl linkages (ortho, meta, para) which are present in the polymer backbone. This paper details the synthesis of these ionenes and associated characterizations. Ionene-polyamides exhibit relatively low melting points (∼150 oC) allowing them to be readily processed into films and other objects. These ionene-polyamide materials are being developed for further study as polymer membranes for the separations of gases such as CO2, N2, CH4 and H2.

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