Abstract We report the preparation of solid-state facilitated olefin transport membranes based on a low-cost, one-pot, room-temperature synthesized graft copolymer, i.e., poly(ethylene-alt-maleic anhydride)-g-O-(2-aminopropyl)-O′-(2-methoxyethyl) polypropylene glycol (PEMA-g-PPG). An electron acceptor, 7,7,8,8-tetracyanoquinodimethane (TCNQ), was employed to activate the surface of the silver nanoparticles (AgNPs), leading to partial polarization. The AgNPs interacted with TCNQ as well as the PEMA-g-PPG graft copolymer to form facilitated olefin transport membranes, as characterized by Fourier transform infrared spectroscopy, UV–vis spectroscopy, and X-ray photoelectron spectroscopy. The PEMA-g-PPG/AgNP membrane activated by TCNQ showed long-term stability (with a mixed gas permeance of 7.8 GPU and propylene/propane selectivity of 17.5) of up to 100 h, while that without TCNQ showed poor stability. The membrane based on PEMA-g-PPG showed better performance than those based on conventional matrices of poly(ethylene oxide) (PEO), poly(vinyl pyrrolidone) (PVP), or poly(ether-block-amide) (PEBAX).

中文翻译：

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促进烯烃通过由部分极化的银纳米粒子和 PEMA-g-PPG 接枝共聚物组成的膜传输

摘要 我们报告了基于低成本、一锅法、室温合成的接枝共聚物，即聚（乙烯-alt-马来酸酐）-gO-（2-氨基丙基） -O'-（2-甲氧基乙基）聚丙二醇（PEMA-g-PPG）。使用电子受体 7,7,8,8-四氰基醌二甲烷 (TCNQ) 来激活银纳米粒子 (AgNPs) 的表面，导致部分极化。AgNPs 与 TCNQ 以及 PEMA-g-PPG 接枝共聚物相互作用形成促进烯烃传输膜，如傅里叶变换红外光谱、紫外-可见光谱和 X 射线光电子能谱所表征。由 TCNQ 激活的 PEMA-g-PPG/AgNP 膜显示出长期稳定性（混合气体渗透率为 7.8 GPU，丙烯/丙烷选择性为 17。5) 长达 100 小时，而没有 TCNQ 的稳定性较差。基于 PEMA-g-PPG 的膜表现出比基于聚（环氧乙烷）（PEO）、聚（乙烯基吡咯烷酮）（PVP）或聚（醚-嵌段-酰胺）（PEBAX）的常规基质的膜更好的性能。