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Recent progress on structure and performance control of hydrophobic PVDF membranes prepared by non-solvent induced phase separation

Authors： XU XiaoJie, YU Mengchao, WANG Yu, WANG Tao, FENG YingNan, ZHAO ZhiPing

Units： School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488

KeyWords： hydrophobic polymeric membranes; non-solvent induced phase separation; spray-assisted non-solvent induced phase separation; membrane distillation

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2024,44(1):147-156

Abstract：

Non-solvent induced phase separation (NIPS) is an efficient method to prepare porous hydrophobic membranes. It involves thermodynamic and kinetic factors which have deterministic effects on the structure and performance of hydrophobic porous membranes. Hence, a commonly used material for hydrophobic membrane preparation, PVDF, is taken as the research object in this paper. This paper systematically summarizes the influencing factors and membrane formation mechanisms of traditional immersion precipitation method and emerging spray-assisted non-solvent induced phase separation method in the membrane preparation process, focusing on the effects of different fabrication conditions on the membrane structure and performance (hydrophobicity, pore size and porosity, etc.), which could lay a foundation for the controllable preparation of hydrophobic membranes.

Funds：

国家自然科学基金（22208016），北京理工大学青年教师学术启动计划。

AuthorIntro：

徐小洁（2000-），女，河北邯郸人，硕士研究生，研究方向为有机膜制备及应用，E-mail：xxj001221@163.com

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