Nanofiber interwoven composite gel membrane for carbon dioxide separation and preparation method of nanofiber interwoven composite gel membrane
By in situ polymerization to form a CO2-philic gel layer on the nanofiber interwoven skeleton, the problems of nanomaterial aggregation and poor interface compatibility in the mixed matrix membrane were solved, and the efficient CO2 separation performance was improved.
Patent Information
- Application Number
- CN202510922029.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-04
- Publication Date
- 2025-10-17
AI Technical Summary
Existing mixed matrix membranes suffer from problems of nanomaterial aggregation and poor interfacial compatibility during carbon dioxide separation, resulting in non-selective defects and discontinuous gas transmission channels, which limit the separation performance.
The preparation method of nanofiber interwoven composite gel membrane is adopted. The carbon dioxide-philic gel layer is formed by in-situ polymerization on the nanofiber interwoven skeleton. The phase change process is avoided by thermal initiation method to form a dense and defect-free gel layer. The polar ether bonds in the polyethylene glycol gel are used to promote the dissolution of carbon dioxide molecules and repel nitrogen molecules.
It achieves high carbon dioxide permeability and selectivity, avoids defects within the membrane, enhances gas separation performance, and has excellent structural and performance stability.