Enhanced Gas Separation Performance by Embedding Submicron Poly(ethylene glycol) Capsules into Polyetherimide Membrane  

作　　者：Ying-Ying Ma Min Liu Jing-Tao Wang Bin Zhu Yi-Fan Li 

机构地区：[1]School of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China [2]College of Chemistry,Zhengzhou University,Zhengzhou 450001,China

出　　处：《Chinese Journal of Polymer Science》2021年第3期355-364,I0007,共11页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No. 21878277);Natural Science Foundation of Henan province (No. 182300410268);China Postdoctoral Science Foundation (No. 2017T100538);Outstanding Young Talent Research Fund of Zhengzhou University (No. 1521324002)。

摘　　要：Recently, hollow filler as an emerging concept is attracting more attention in preparation of mixed matrix membranes(MMMs). Herein,poly(ethylene glycol) microcapsules(PMC) are synthesized via distillation precipitation polymerization and embedded into the polyetherimide(Ultem■1000) matrix to fabricate MMMs for CO_(2) capture. The PMC exhibits a preferential hollow structure within the Ultem matrix to furnish highways within membrane, and thus achieve high gas permeability. Meanwhile, the favorable affinity of poly(ethylene glycol)(PEG)microcapsule with ether oxygen group(EO) towards CO_(2) enhances the CO_(2) solubility selectivity. Such integration of physical and chemical microenvironments in the as-designed PEG microcapsule affords highly enhanced CO_(2) separation performance. Compared to pristine Ultem■1000, the membrane with 2.5 wt% PMC loading exhibits 310% increment in CO_(2) permeability and 22% increment in CO_(2)/N_(2) selectivity,which shows the promising prospects of designing PEG-containing microcapsules as the filler of MMMs for CO_(2) capture.

关 键 词：Mixed matrix membranes(MMMs) Poly(ethylene glycol)microcapsules(PMC) Polyetherimide(Ultem^(■)1000) CO_(2) capture 

分 类 号：TQ051.893[化学工程]