Related Experiment Video
Updated: Oct 25, 2025
Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
A Novel Imide-Bridged Polysiloxane Membrane Was Prepared via One-Pot Hydrosilylation Reaction for O2/N2 Separation
Shuangping Xu1, Wenqiang Ma1, Hailiang Zhou1
1College of Materials Science and Engineering, Heilongjiang Provinces Key Laboratory of Polymeric Composite materials, Qiqihar University, Wenhua Street, Qiqihar 161006, 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.
