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Selective gas transfer through binary polymeric systems based on block-copolymers.

I N Beckman¹, V V Teplyakov²

¹Lomonosov Moscow State University, Department of Chemistry, Moscow, Russia; A.V.Topchiev Institute of Petrochemical Synthesis, RAS, Leninsky prospect 29, 119991 Moscow, Russia.

Advances in Colloid and Interface Science

|December 3, 2014

Summary

This summary is machine-generated.

This study evaluates theories of gas permeability in polymer membranes, focusing on heterogeneous materials with different polymer inclusions. It identifies optimal inclusion shapes for targeted gas separation and predicts performance for hydrocarbon gases in block-copolymers.

Keywords:

Block-copolymers Heterogeneous media Selective gas transfer

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Area of Science:

Polymer Science
Materials Science
Chemical Engineering

Background:

Gas separation membranes are crucial for various industrial processes.
Understanding gas transport in heterogeneous polymeric membranes is complex.
Polymer blends and block-copolymers offer tunable properties for membrane applications.

Purpose of the Study:

To evaluate phenomenological theories of gas permeability in selective polymeric membranes.
To investigate the influence of inclusion shape and properties on membrane performance.
To predict gas permeability and selectivity for novel block-copolymer materials.

Main Methods:

Theoretical modeling of stationary mass transfer in heterogeneous media.
Experimental verification using various permanent gases and polymer membranes.
Application of modified Maxwell equations for two-phase systems.
Prediction of gas permeability for hydrocarbon gases in block-copolymers.

Main Results:

Identified optimal inclusion shapes for enhanced membrane permeability and selectivity.
Validated theoretical models with experimental data for glassy and rubbery polymers.
Developed empirical approaches for describing gas permeability in two-phase systems.
Demonstrated the potential of block-copolymers for designing membranes with specific molecular-selective properties.

Conclusions:

Heterogeneous polymeric membranes, particularly block-copolymers, can be designed for targeted gas separation.
The shape and properties of dispersed phases significantly impact membrane performance.
Modified Maxwell equations provide a useful framework for predicting gas transport in complex membrane structures.