Method for observing microscopic formation process of porous membrane prepared by phase separation method
By designing an observation device consisting of a cover glass slide, a slide, and a gasket, and controlling the non-solvent flow rate, the problem of poor repeatability in the preparation of porous membranes by phase separation method was solved, and efficient and accurate observation of the phase separation mechanism was achieved.
Patent Information
- Application Number
- PCT/CN2025/127493
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-11-15
- Filing Date
- 2025-10-14
- Publication Date
- 2026-05-21
AI Technical Summary
Existing technologies suffer from poor repeatability and difficulty in accurately controlling the distribution of non-solvent flow fields during the preparation of porous membranes via phase separation, resulting in unclear membrane pore structure formation mechanisms and limited observation methods.
An observation device was designed, including a coverslip, a slide, a fixing device, and a gasket. By adjusting the gap width between the coverslip and the slide, the flow rate of the non-solvent is controlled, and the phase separation process of the polymer solution and the non-solvent is observed using a microscope.
This study achieved highly repeatable observation of the microscopic formation process of porous membranes prepared by phase separation, elucidated the phase separation mechanism, and improved the stability and reliability of experimental results.