Abstract

Polyarylate–poly(ethylene oxide) block copolymers and their modifications by blocks of poly(propylene oxide) and poly(butylene terephthalate) are synthesized and studied in this work to create polymer materials for dry–wet molding of hollow fiber gas separation membranes selective and resistant to carbon dioxide. The optimum combination of gas separation and mechanical properties, namely, CO₂ permeability (6.12 barrer), separation factor of CO₂/N₂ = 36, and Young modulus (2700 MPa), is demonstrated by a BCP-10 block copolymer containing 12.5 wt % crystallizable PEO blocks with a molecular weight of 10 000 Da and 12.5 wt % amorphous PPO blocks with a molecular weight of 2000 Da.

中文翻译：

---

用于气体混合物中二氧化碳的膜分离的聚芳酯-聚（环氧乙烷）嵌段共聚物

摘要

合成并研究了聚芳酯-聚环氧乙烷嵌段共聚物及其通过聚环氧丙烷和聚对苯二甲酸丁二醇酯嵌段的改性方法，以制备用于中空纤维气体分离膜选择性干湿成型的聚合物材料。耐二氧化碳。含12.5的BCP-10嵌段共聚物证明了气体分离和机械性能的最佳组合，即CO ₂渗透性（6.12 barrer），CO ₂ / N ₂ = 36的分离系数和杨氏模量（2700 MPa）。重量％的具有10,000Da的可结晶PEO嵌段和12.5重量％的具有2000Da的无定形PPO嵌段。