A Novel Imide-Bridged Polysiloxane Membrane Was Prepared via One-Pot Hydrosilylation Reaction for O2/N2 Separation

Shuangping Xu; Wenqiang Ma; Hailiang Zhou; Yushu Zhang; Hongge Jia; Jingyu Xu; Pengfei Jiang; Xintian Wang; Wenwen Zhao

doi:10.1021/acsomega.1c01964

A Novel Imide-Bridged Polysiloxane Membrane Was Prepared via One-Pot Hydrosilylation Reaction for O₂/N₂ Separation

ACS Omega. 2021 Jul 23;6(30):19553-19558. doi: 10.1021/acsomega.1c01964. eCollection 2021 Aug 3.

Authors

Shuangping Xu¹, Wenqiang Ma¹, Hailiang Zhou¹, Yushu Zhang¹, Hongge Jia¹, Jingyu Xu^{1

2}, Pengfei Jiang¹, Xintian Wang¹, Wenwen Zhao¹

Affiliations

¹ College of Materials Science and Engineering, Heilongjiang Provinces Key Laboratory of Polymeric Composite materials, Qiqihar University, Wenhua Street, Qiqihar 161006, China.
² Liaoning Province Key Laboratory of Pulp and Papermaking Engineering, Dalian Polytechnic University, Dalian, Liaoning Province 116034, China.

Abstract

The synthesis of poly(methyhydrosiloxane) (PMHS) and N,N'-bis(3-allyl)pyromellitic diimide was optimized for O₂/N₂ separation. The membrane exhibits excellent mechanical and thermal properties and shows an O₂/N₂ selectivity of up to 4.44 with an O₂ permeability of 31.0 Barrer; compared with polydimethylsiloxane (PDMS) and pure polyimide (PI) membranes, the separation selectivity shows a 107% increase for PDMS, and the permeation shows a 660% increase for pure PI. The obtained results were well above the ones reported on the literature for similar conditions opening the door for the preparation of a stable polysiloxane (PMHS-I) gas separation membrane with extraordinary O₂/N₂ separation performance.