安全、健康和环境2025，Vol.25Issue(3)：58-65,8.DOI:10.3969/j.issn.1672-7932.2025.03.008
具有双连续孔道结构的聚醚砜多孔膜制备研究
Study on Preparation of Polyether Sulfone Porous Membranes with Double Continuous Pore Structure
摘要
Abstract
Membrane method is one of the main technologies to achieve high efficiency VOCs recovery,and membrane composite is the most widely used method to prepare mechanically stable separation membranes.A-mong them,the low surface porosity of the porous support layer leads to the pore restriction effect,which leads to the decline of the separation performance of the composite film,which is the key problem to be solved urgent-ly.In order to further improve the surface porosity of the porous support layer of the composite film,the polymer phase of polyether sulfone,the solvent phase of 2-pyrrolidone and the non-solvent phase of deionized water were used to prepare a ternary casting film liquid system with weak thermodynamic stability.Orthogonal experiments were carried out with the combination of steam induced phase separation(VIPs)and non-solvent induced phase separation(NIPs),and the preparation parameters of spiral separation were investigated.The results showed that the polyether sulfone porous support layer prepared in this study had an extremely open double continuous structural surface with the highest porosity of 26.93%,and the permeation rates of CH4 and CO2 reach 2.2×105 GPU and 3.36×105 GPU,respectively,which can greatly reduce the degradation of separation performance of composite films caused by pore restriction effect,making it an ideal substrate for preparing composite films for gas separation.关键词
复合薄膜/多孔支撑层/孔限制效应/表面孔隙率/聚醚砜/蒸汽诱导相分离Key words
composite film/porous support layer/hole restriction effect/surface porosity/polyether sul-fone/vapor induced phase separation分类
环境科学引用本文复制引用
尹树孟,李东泽..具有双连续孔道结构的聚醚砜多孔膜制备研究[J].安全、健康和环境,2025,25(3):58-65,8.基金项目
中国石化科技部项目(323039),油田轻烃挥发气高效回收抑制技术研发. （323039）
