Synthesis and properties of novel polyurethanes based on amino ethers of boric acid for gas separation membranes

RSC Advances ◽  
2015 ◽  
Vol 5 (81) ◽  
pp. 65674-65683 ◽  
Author(s):  
I. M. Davletbaeva ◽  
O. Yu. Emelina ◽  
I. V. Vorotyntsev ◽  
R. S. Davletbaev ◽  
E. S. Grebennikova ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Boric Acid ◽  
Gas Separation ◽  
Separation Membranes ◽  
Gas Separation Membranes

Herein we present the structural and mechanical properties of polyurethanes synthesized from amino ethers of boric acid for gas separation.

scholarly journals Tailoring the Thermal and Mechanical Properties of PolyActiveTM Poly(Ether-Ester) Multiblock Copolymers Via Blending with CO2-Phylic Ionic Liquid

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 890 ◽  
Author(s):  
Martina Klepić ◽  
Alessio Fuoco ◽  
Marcello Monteleone ◽  
Elisa Esposito ◽  
Karel Friess ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Gas Separation ◽  
Thermal And Mechanical Properties ◽  
Polybutylene Terephthalate ◽  
Topographic Analysis ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Wide Range ◽  
Ether Ester ◽  
Dense Films

The last decade has seen an exponential increase in the number of studies focused on novel applications for ionic liquids (ILs). Blends of polymers with ILs have been proposed for use in fuel cells, batteries, gas separation membranes, packaging, etc., each requiring a set of specific physico-chemical properties. In this work, blends of four grades of the poly(ether-ester) multiblock copolymer PolyActive™ with different concentrations of the CO2-philic 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [BMIM][Tf2N] were prepared in the form of dense films by a solution casting and solvent evaporation method, in view of their potential use as gas separation membranes for CO2 capture. Depending on the polymer structure, the material properties could be tailored over a wide range by means of the IL content. All samples were dry-feeling, highly elastic self-standing dense films. The microstructure of the blends was studied by scanning electron microscopy with a backscattering detector, able to observe anisotropy in the sample, while a special topographic analysis mode allowed the visualization of surface roughness. Samples with the longest poly(ethylene oxide terephthalate) (PEOT) blocks were significantly more anisotropic than those with shorter blocks, and this heterogeneity increased with increasing IL content. DSC analysis revealed a significant decrease in the melting enthalpy and melting temperature of the crystalline PEOT domains with increasing IL content, forming an amorphous phase with Tg ≈ −50 °C, whereas the polybutylene terephthalate (PBT) phase was hardly affected. This indicates better compatibility of the IL with the polyether phase than the polyester phase. Young’s modulus was highest and most IL-dependent for the sample with the highest PEOT content and PEOT block length, due to its high crystallinity. Similarly, the sample with short PEOT blocks and high PBT content also showed a high modulus and tensile strength, but much lower maximum elongation. This study provides a detailed discussion on the correlation between the morphological, thermal, and mechanical properties of these PolyActive™/[BMIM][Tf2N] blends.

Pentiptycene-Based Polyurethane with Enhanced Mechanical Properties and CO2-Plasticization Resistance for Thin Film Gas Separation Membranes

2018 ◽  
Vol 10 (20) ◽  
pp. 17366-17374 ◽  
Author(s):  
Ali Pournaghshband Isfahani ◽  
Morteza Sadeghi ◽  
Kazuki Wakimoto ◽  
Binod Babu Shrestha ◽  
Rouhollah Bagheri ◽  
...  
Keyword(s):  
Thin Film ◽  
Mechanical Properties ◽  
Gas Separation ◽  
Separation Membranes ◽  
Gas Separation Membranes

MXene-based gas separation membranes with sorption type selectivity

2021 ◽  
Vol 621 ◽  
pp. 118994
Author(s):  
D.I. Petukhov ◽  
A.S. Kan ◽  
A.P. Chumakov ◽  
O.V. Konovalov ◽  
R.G. Valeev ◽  
...  
Keyword(s):  
Gas Separation ◽  
Separation Membranes ◽  
Gas Separation Membranes

scholarly journals A Self‐Consistent Model for Sorption and Transport in Polyimide‐Derived Carbon Molecular Sieve Gas Separation Membranes

2020 ◽  
Vol 132 (46) ◽  
pp. 20523-20527
Author(s):  
Oishi Sanyal ◽  
Samuel S. Hays ◽  
Nicholas E. León ◽  
Yoseph A. Guta ◽  
Arun K. Itta ◽  
...  
Keyword(s):  
Gas Separation ◽  
Molecular Sieve ◽  
Carbon Molecular Sieve ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Consistent Model ◽  
Self Consistent

Thermally rearranged polybenzoxazole copolymers incorporating Tröger's base for high flux gas separation membranes

2020 ◽  
Vol 612 ◽  
pp. 118437 ◽  
Author(s):  
Xiaofan Hu ◽  
Won Hee Lee ◽  
Joon Yong Bae ◽  
Ju Sung Kim ◽  
Jun Tae Jung ◽  
...  
Keyword(s):  
Gas Separation ◽  
High Flux ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Troger's Base

Design of gas separation membranes derived of rigid aromatic polyimides. 1. Polymers from diamines containing di-tert-butyl side groups

2010 ◽  
Vol 365 (1-2) ◽  
pp. 145-153 ◽  
Author(s):  
Mariola Calle ◽  
Angel E. Lozano ◽  
Javier de Abajo ◽  
José G. de la Campa ◽  
Cristina Álvarez
Keyword(s):  
Gas Separation ◽  
Aromatic Polyimides ◽  
Tert Butyl ◽  
Separation Membranes ◽  
Gas Separation Membranes
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