Preprint Article Version 1 This version is not peer-reviewed

A Facile Synthesis of (PIM-Polyimide)- (6FDA-Durene-Polyimide) Copolymer as Novel Polymer Membranes for CO2 Separation

Version 1 : Received: 1 August 2019 / Approved: 5 August 2019 / Online: 5 August 2019 (08:07:23 CEST)

How to cite: Hossain, I.; Al Munsur, A.Z.; Kim, T. A Facile Synthesis of (PIM-Polyimide)- (6FDA-Durene-Polyimide) Copolymer as Novel Polymer Membranes for CO2 Separation. Preprints 2019, 2019080056 (doi: 10.20944/preprints201908.0056.v1). Hossain, I.; Al Munsur, A.Z.; Kim, T. A Facile Synthesis of (PIM-Polyimide)- (6FDA-Durene-Polyimide) Copolymer as Novel Polymer Membranes for CO2 Separation. Preprints 2019, 2019080056 (doi: 10.20944/preprints201908.0056.v1).

Abstract

Random copolymers made of both (PIM-polyimide) and (6FDA-durene-PI) were prepared for the first time by a facile one-step polycondensation reaction. By combining the highly porous and contorted structure of PIM (polymers with intrinsic microporosity) and high thermomechanical properties of PI (polyimide), the membranes obtained from these random copolymers [(PIM-PI)x-(6FDA-durene-PI)y] showed high CO2 permeability (> 1047 Barrer) with moderate CO2/N2 (> 16.5) and CO2/CH4 (> 18) selectivity, together with excellent thermal and mechanical properties. The membranes prepared from three different compositions of two comonomers (1:4, 1:6 and 1:10 of x:y), all showed similar morphological and physical properties, and gas separation performance, indicating ease of synthesis and practicability for large-scale production. The gas separation performance of these membranes at various pressure ranges (100–1500 torr) was also investigated.

Subject Areas

CO2 separation; random copolymer; PIM-polyimide; permeability-selectivity; pressure effect

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